EVD evolution. electronic expansion valve driver. User manual. Integrated Control Solutions & Energy Savings

Transcription

1 EVD evoluion elecronic expansion valve driver User manual Inegraed Conrol Soluions & Energy Savings

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3 WARNINS DISPOSAL CAREL bases he developmen of is producs on decades of experience in HVAC, on he coninuous invesmens in echnological innovaions o producs, procedures and sric qualiy processes wih in-circui and funcional esing on 00% of is producs, and on he mos innovaive producion echnology available on he marke. CAREL and is subsidiaries noneheless canno guaranee ha all he aspecs of he produc and he sofware included wih he produc respond o he requiremens of he final applicaion, despie he produc being developed according o sar-of-hear echniques. The cusomer (manufacurer, developer or insaller of he final equipmen) acceps all liabiliy and risk relaing o he configuraion of he produc in order o reach he expeced resuls in relaion o he specific final insallaion and/or equipmen. CAREL may, based on specific agreemens, acs as a consulan for he posiive commissioning of he final uni/applicaion, however in no case does i accep liabiliy for he correc operaion of he final equipmen/sysem. The CAREL produc is a sae-of-he-ar produc, whose operaion is specified in he echnical documenaion supplied wih he produc or can be downloaded, even prior o purchase, from he websie Each CAREL produc, in relaion o is advanced level of echnology, requires seup/configuraion/programming/commissioning o be able o operae in he bes possible way for he specific applicaion. The failure o complee such operaions, which are required/indicaed in he user manual, may cause he final produc o malfuncion; CAREL acceps no liabiliy in such cases. Only qualified personnel may insall or carry ou echnical service on he produc. The cusomer mus only use he produc in he manner described in he documenaion relaing o he produc. In addiion o observing any furher warnings described in his manual, he following warnings mus be heeded for all CAREL producs: preven he elecronic circuis from geing we. Rain, humidiy and all ypes of liquids or condensae conain corrosive minerals ha may damage he elecronic circuis. In any case, he produc should be used or sored in environmens ha comply wih he emperaure and humidiy limis specified in he manual; do no insall he device in paricularly ho environmens. Too high emperaures may reduce he life of elecronic devices, damage hem and deform or mel he plasic pars. In any case, he produc should be used or sored in environmens ha comply wih he emperaure and humidiy limis specified in he manual; do no aemp o open he device in any way oher han described in he manual; do no drop, hi or shake he device, as he inernal circuis and mechanisms may be irreparably damaged; do no use corrosive chemicals, solvens or aggressive deergens o clean he device; do no use he produc for applicaions oher han hose specified in he echnical manual. INFORMATI FOR USERS THE CORRECT HANDLIN OF WASTE ELECTRICAL AND ELEC- TRIC EQUIPMENT (WEEE) In reference o European Union direcive 2002/96/EC issued on 27 January 2003 and he relaed naional legislaion, please noe ha:. WEEE canno be disposed of as municipal wase and such wase mus be colleced and disposed of separaely; 2. he public or privae wase collecion sysems defined by local legislaion mus be used. In addiion, he equipmen can be reurned o he disribuor a he end of is working life when buying new equipmen; 3. he equipmen may conain hazardous subsances: he improper use or. 5. incorrec disposal of such may have negaive effecs on human healh and on he environmen; he symbol (crossed-ou wheeled bin) shown on he produc or on he packaging and on he insrucion shee indicaes ha he equipmen has been inroduced ono he marke afer 3 Augus 2005 and ha i mus be disposed of separaely; in he even of illegal disposal of elecrical and elecronic wase, he penalies are specified by local wase disposal legislaion. Warrany on he maerials: 2 years (from he dae of producion, excluding consumables). Approval: he qualiy and safey of CAREL S.P.A. producs are guaraneed by he ISO 900 cerified design and producion sysem, as well as by he marks (*). All of he above suggesions likewise apply o he conrollers, serial boards, programming keys or any oher accessory in he CAREL produc porfolio. CAREL adops a policy of coninual developmen. Consequenly, CAREL reserves he righ o make changes and improvemens o any produc described in his documen wihou prior warning. The echnical specificaions shown in he manual may be changed wihou prior warning. The liabiliy of CAREL in relaion o is producs is specified in he CAREL general conrac condiions, available on he websie and/or by specific agreemens wih cusomers; specifically, o he exen where allowed by applicable legislaion, in no case will CAREL, is employees or subsidiaries be liable for any los earnings or sales, losses of daa and informaion, coss of replacemen goods or services, damage o hings or people, downime or any direc, indirec, incidenal, acual, puniive, exemplary, special or consequenial damage of any kind whasoever, wheher conracual, exra-conracual or due o negligence, or any oher liabiliies deriving from he insallaion, use or impossibiliy o use he produc, even if CAREL or is subsidiaries are warned of he possibiliy of such damage. 3

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5 Conen. INTRODUCTI 7. Models Funcions and main characerisics INSTALLATI 9 2. DIN rail assembly and dimensions Descripion of he erminals Connecion diagram - superhea conrol Insallaion Connecing he USB-LAN converer Upload, Download and Rese parameers (display) eneral connecion diagram USER INTERFACE 3 3. Assembling he display board (accessory) Display and keypad Display mode (display) Programming mode (display).... COMMISSIIN 5. Commissioning uided commissioning procedure (display) Checks afer commissioning...7. Oher funcions CTROL 8 5. Main and auxiliary conrol Superhea conrol Special conrol Auxiliary conrol FUNCTIS 2 6. Inpus and oupus Conrol saus Special conrol saus PROTECTORS Proecors PARAMETERS TABLE 3 8. Uni of measure Variables shown on he display Variables only accessible via serial link ALARMS Alarms Alarm relay configuraion Sensor alarms Conrol alarms EEV moor alarm plan error alarm LAN error alarm (for LAN and RS85/Modbus driver) roubleshooing 2.3 Copying he seup Seing he defaul parameers Updaing he driver and display firmware...5. TECHNICAL SPECIFICATIS 3 2. APPENDIX: VPM (VISUAL PARAMETER MANAER) 2. Insallaion Programming (VPM)... 5

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7 . INTRODUCTI EVD evoluion is a driver for double pole sepper moors designed for o conrol he elecronic expansion valve in refrigeran circuis. I is designed for DIN rail assembly and is fied wih plug-in screw erminals. I conrols refrigeran superhea and opimises he efficiency of he refrigeran circui, guaraneeing maximum flexibiliy, being compaible wih various ypes of refrigerans and valves, in applicaions wih chillers, air-condiioners and refrigeraors, he laer including subcriical and ranscriical CO2 sysems. I feaures low superhea, high evaporaion pressure (MOP), low evaporaion pressure (LOP) and high condensing emperaure proecion, and can manage, as an alernaive o superhea conrol, special funcions such as he ho gas bypass, he evaporaor pressure conrol (EPR) and conrol of he valve downsream of he gas cooler in ranscriical CO2 circuis. Togeher wih superhea conrol, i can manage an auxiliary conrol funcion seleced beween condensing emperaure proecion and modulaing hermosa. As regards nework conneciviy, he driver can be conneced o eiher of he following: a pco programmable conroller o manage he driver via plan; a pco programmable conroller or PlanVisorPRO supervisor for supervision only, via LAN or RS85/Modbus respecively. In his case, On/Off conrol is performed via digial inpu. The second digial inpu is available for opimised defros managemen. Anoher possibiliy involves operaion as a simple posiioner wih o 20 ma or 0 o 0 Vdc analogue inpu signal. EVD evoluion comes wih a LED board o indicae he operaing saus, or a graphic display (accessory) ha can be used o perform insallaion, following a guided commissioning procedure involving seing jus parameers: refrigeran, valve, pressure sensor, ype of main conrol (chiller, showcase, ec.). The procedure can also be used o check ha he sensor and valve moor wiring is correc. Once insallaion is complee, he display can be removed, as i is no necessary for he operaion of he driver, or alernaively kep in place o display he significan sysem variables, any alarms and when necessary se he conrol parameers. The driver can also be seup using a compuer via he service serial por. In his case, he VPM program (Visual Parameer Manager) needs o be insalled, downloadable from hp://ksa.carel.com, and he USB-LAN converer EVDCNV00E0 conneced. using he VPM program or by PlanVisor/PlanVisorPro supervisor and pco programmable conroller; commissioning simplified by display wih guided procedure for seing he parameers and checking he elecrical connecions; muli-language graphic display, wih help funcion on various parameers; managemen of differen unis of measure (meric/imperial); parameers proeced by password, accessible a a service (insaller) and manufacurer level; copy he configuraion parameers from one driver o anoher using he removable display; raiomeric or elecronic o 20 ma pressure ransducer, he laer can be shared beween a series of driver, useful for muliplexed applicaions; possibiliy o use S3 and S as backup sensors in he even of fauls on he main sensors S and S2; o 20 ma or 0 o 0 Vdc inpu o use he driver as a posiioner conrolled by an exernal signal; managemen of power failures wih valve closing (if he E200/ E300 accessory is fied); advanced alarm managemen. Series of accessories for EVD evoluion Display (code EVDIS00**0) Easily applicable and removable a any ime from he fron panel of he driver, during normal operaion displays all he significan sysem variables, he saus of he relay oupu and recognises he acivaion of he proecion funcions and alarms. During commissioning, i guides he insaller in seing he parameers required o sar he insallaion and, once compleed, can copy he parameers o oher drivers. The models differ in he firs seable language, he second language for all models is English. EVDIS00**0 can be used o configure and monior all he conrol parameers, accessible via password a a service (insaller) and manufacurer level.. Models Code Descripion EVD0000E00 EVD evoluion - LAN EVD0000E0 EVD evoluion - plan EVD0000E20 EVD evoluion - RS85/Modbus EVD0000E0 EVD evoluion - LAN, muliple pack of 0 pcs (*) EVD0000E EVD evoluion - plan, muliple pack of 0 pcs (*) EVD0000E2 EVD evoluion - RS85/Modbus, muliple pack of 0 pcs (*) EVDIS00DE0 Display for EVD evoluion, erman EVDIS00EN0 Display for EVD evoluion, English EVDIS00ES0 Display for EVD evoluion, Spanish EVDIS00FR0 Display for EVD evoluion, French EVDIS00IT0 Display for EVD evoluion, Ialian EVDIS00PT0 Display for EVD evoluion, Poruguese EVDC002 EVD evoluion, connecor ki (0 pcs) for muliple pack (*) Tab..a (*)The codes wih muliple packages are sold wihou connecors, available separaely in code EVDC Funcions and main characerisics In summary: elecrical connecions by plug-in screw erminals; serial card incorporaed in he driver, based on he model (LAN, plan, RS85/Modbus ); compaibiliy wih various ypes of valves and refrigerans; acivaion/deacivaion of conrol via digial inpu or remoe conrol via plan, from pco programmable conroller; superhea conrol wih proecion funcions for low superhea, MOP, LOP, high condensing emperaure; configuraion and programming by display (accessory), by compuer 7 Fig..a USB/LAN converer (code EVDCNV00E0) The USB-LAN converer is conneced, once he LED board cover has been removed, o he service serial por underneah. Fied wih cables and connecors, i can connec EVD evoluion direcly o a compuer, which, using he VPM program, can configure and program he driver. VPM can also be used o updae he driver and display firmware. See appendix I. Fig..b

8 Baery module (code E*****) E00200 is an elecronic device ha guaranees emporary power o he driver in he even of mains power failures. Supplied wih a 2 Vdc lead baery, i delivers 22 Vdc o he driver for he ime required o compleely close he elecronic valve being conrolled, while during normal operaion he baery is recharged. The complee module wih baeries (code E00300) and he box for baeries (code EBOX*0) are available. E00300 EBVAT00200 Baeria 2 V Fig..c Valve cable E2VCABS*00 (IP67) Shielded cable wih buil-in connecor for connecion o he valve moor. The connecor code E2VC0000 (IP65) can also be purchased on is own, o be wired. Fig..d 8

9 EVD service USB adaper PC EN 2. INSTALLATI 2. DIN rail assembly and dimensions EVD evoluion is supplied wih screen-prined connecors o simplify wiring. The shield is conneced wih a spade erminal. 2.3 Connecion diagram - superhea conrol CAREL E X V 3 2 COM NO Power Supply E X V connecion Relay EVD evoluion Vac 2 Vac 2 3 shield 2 3 S 30VA 2 AT 3 2 COM NO Analog Digial Inpu Nework ND V REF S S2 S3 S DI DI2 ND Tx/Rx NET Fig. 2.a EVD OPEN CLOSE Descripion of he erminals ND VREF S S2 S3 S DI DI2 ND Tx/Rx Power Supply 3 2 E X V connecion COM NO Relay EVD evoluion Fig. 2.c aa ND Analog Digial Inpu V REF S S2 S3 S DI DI2 Fig. 2.b ND Nework Tx/Rx green 2 yellow 3 brown whie 5 personal compuer for configuraion 6 USB/LAN converer 7 adaper 8 raiomeric pressure ransducer - evaporaion pressure 9 NTC sucion emperaure 0 digial inpu o enable conrol free conac (up o 230 Vac) 2 solenoid valve 3 alarm signal Terminal Descripion, Power supply Emergency power supply Funcional earh,3,2, Sepper moor power supply COM, NO Alarm relay ND Earh for he signals VREF Power o acive sensors S Sensor (pressure) or o 20 ma exernal signal S2 Sensor 2 (emperaure) or 0 o 0 V exernal signal S3 Sensor 3 (pressure) S Sensor (emperaure) DI Digial inpu DI2 Digial inpu 2 Terminal for LAN, plan, RS85, Modbus connecion Terminal for LAN, plan, RS85, Modbus connecion Terminal for plan, RS85, Modbus connecion aa pora seriale di servizio (rimuovere il coperchio per poervi accedere) Tab. 2.a Noe: he use of he driver for he superhea conrol requires he use of he evaporaion pressure sensor S and he sucion emperaure sensor S2, which will be fied afer he evaporaor, and digial inpu o enable conrol. As an alernaive o digial inpu, conrol can be enabled via remoe signal (LAN, plan, RS85). For he posiioning of he sensors relaing o oher applicaions, see he chaper on Conrol ; inpus S, S2 are programmable and he connecion o he erminals depends on he seing of he parameers. See he chapers on Commissioning and Funcions ; pressure sensor S in he diagram is raiomeric. See he general connecion diagram for he oher elecronic sensors, o 20 ma or combined. 9

10 2. Insallaion For insallaion proceed as follows, wih reference o he wiring diagrams:. connec he sensors and power supply: he sensors can be insalled a maximum disance of 0 meres away from he conroller, as long as shielded cables are used wih minimum cross-secion of mm² (connec only one end of he shield o he earh in he elecrical panel); 2. connec any digial inpus, maximum lengh 30 m; 3. connec he power cable o he valve moor: recommended -wire shielded cable, AW 8/22, Lmax=0 m;. carefully evaluae he maximum capaciy of he relay oupu specified in he chaper Technical specificaions ; 5. program he driver, if necessary: see he chaper User inerface ; 6. connec he serial nework, if feaured: follow o he diagrams below for he earh connecion. Case : muliple drivers conneced in a nework powered by he same ransformer. Typical applicaion for a series of drivers inside he same elecrical panel. COM NO COM NO AT COM NO EVD service USB adaper OPEN CLOSE 230 Vac 2 Vac 2 AT 2 AT and ammonia fumes, saline mis, smoke) o avoid corrosion and/or oxidaion; srong magneic and/or radio frequency inerference (avoid insalling he appliances near ransmiing anennae); exposure of he driver o direc sunligh and o he elemens in general. Imporan: When connecing he driver, he following warnings mus be observed: incorrec connecion o he power supply may seriously damage he driver; use cable ends suiable for he corresponding erminals. Loosen each screw and inser he cable ends, hen ighen he screws and lighly ug he cables o check correc ighness; separae as much as possible (a leas 3 cm) he sensor and digial inpu cables from he power cables o he loads so as o avoid possible elecromagneic disurbance. Never lay power cables and sensor cables in he same conduis (including hose in he elecrical panels); avoid insalling he sensor cables in he immediae viciniy of power devices (conacors, circui breakers, ec.). Reduce he pah of he sensor cables as much as possible and avoid enclosing power devices; avoid powering he driver direcly from he main power supply in he panel if his supplies differen devices, such as conacors, solenoid valves, ec., which will require a separae ransformer. 230 Vac 2 Vac 2 AT COM NO 2 AT Fig. 2.d Case 2: muliple drivers conneced in a nework powered by differen ransformers ( no conneced o earh). Typical applicaion for a series of drivers in differen elecrical panels. COM NO 2 AT COM NO pco pco pco 2.5 Connecing he USB-LAN converer remove he LED board cover by pressing on he fasening poins; plug he adaper ino he service serial por; connec he adaper o he converer and hen his in urn o he compuer. press EVD evoluion 230 Vac 230 Vac 230 Vac 2 Vac 2 Vac 2 Vac 2 AT 2 AT 2 AT 230 Vac 230 Vac 2 Vac 2 AT COM NO 230 Vac 2 Vac 2 AT COM NO 2 Vac 2 AT COM NO pco press Fig. 2.g COM NO Fig. 2.e COM NO COM NO 3 2 COM NO Case 3: muliple drivers conneced in a nework powered by differen ransformers wih jus one earh poin. Typical applicaion for a series of drivers in differen elecrical panels. pco NET OPEN CLOSE EVD PC 230 Vac 230 Vac 230 Vac Vac 2 Vac 2 Vac 2 AT COM NO 2 AT COM NO 2 AT COM NO pco ND VREF S S2 S3 S DI DI2 ND Tx/Rx Fig. 2.f Imporan: avoid insalling he driver in environmens wih he following characerisics: relaive humidiy greaer han he 90% or condensing; srong vibraions or knocks; exposure o coninuous waer sprays; exposure o aggressive and polluing amospheres (e.g.: sulphur pco service serial por 2 adaper 3 USB/LAN converer personal compuer Fig. 2.h Noe: when using he service serial por connecion, he VPM program can be used o configure he driver and updae he driver and display firmware, downloadable from hp://ksa.carel.com. See appendix. 0

11 2.6 Upload, Download and Rese parameers (display). press he Help and Ener buons ogeher for 5 seconds; 2. a muliple choice menu will be displayed, use UP/DOWN o selec he required procedure; 3. confirm by pressing ENTER;. he display will promp for confirmaion, press ENTER; 5. a he end a message will be shown o noify he operaion if he operaion was successful. UPLOAD: he display saves all he values of he parameers on he source driver; DOWNLOAD:he display copies all he values of he parameers o he arge driver; RESET: all he parameers on he driver are resored o he defaul values. See he able of parameers in chaper 8. Fig. 2.i Imporan: he procedure mus be carried ou wih driver powered; DO NOT remove he display from he driver during he UPLOAD, DOWNLOAD, RESET procedure; he parameers canno be downloaded if he source driver and he arge driver have incompaible firmware.

12 EVD service USB adaper PC EN 2.7 eneral connecion diagram 230 Vac 30VA 2AT EVD CAREL Power supply module 2V ND B+ B- OUT 2 Vac 2AT wih baery A E X V shield H 2 COM NO 3 2 COM NO Sporlan SEI / SEH / SER S DANFOSS ETS ALCO EX5/6 EX7/ Vac 30VA 2 Vac 2 AT wihou baery EVD evoluion ND Tx/Rx shield pco ND pco 5 6 EVD 7 ND VREF S S2 S3 S DI DI ND Tx/Rx ND EVD0000E0*: LAN version EVD0000E*: plan version EVD0000E2*: RS85 version shield shield Modbus RS85 7 B ND VREF S S2 S3 S DI DI2 ND Tx/Rx C ND VREF S S2 S3 S DI DI2 ND Tx/Rx 3 D E F ND VREF S S2 S3 S DI DI2 ND Tx/Rx ND VREF S S2 S3 S DI DI2 ND Tx/Rx ND VREF S S2 S3 S DI DI2 ND Tx/Rx 5 5 Fig. 2.j whie A Connecion o E200/300 2 yellow B Connecion o elecronic pressure sensor (SPK**0000) or piezoresisive pressure 3 brown ransducer (SPKT00**C0) green C Connecion as posiioner ( o 20 ma inpu) 5 configuraion compuer D Connecion as posiioner (0 o 0 Vdc inpu) 6 USB/LAN converer E Connecion o combined pressure/emperaure sensor (SPKP00**T0) 7 adaper 8 raiomeric pressure ransducer F Connecion o backup sensors (S3, S) 9 NTC sensor Raiomeric pressure ransducer connecions (SPKT00**R0) 0 digial inpu o enable conrol H Connecions o oher ypes of valves free conac (up o 230 Vac) 2 solenoid valve The maximum lengh of he connecion cable o he E200/300 module is 5 m. 3 alarm signal The connecion cable o he valve moor mus be -wire shielded, AW 8/22 red 2 Lmax= 0 m 5 black 6 blue 7 supervision compuer 2

13 3. USER INTERFACE The user inerface consiss of 5 LEDs ha display he operaing saus, as shown in he able: EVD evoluion 3.2 Display and keypad The graphic display shows 2 sysem variables, he conrol saus of he driver, he acivaion of he proecors, any alarms and he saus of he relay oupu Fig. 3.c Legenda: Fig. 3.a LED Flashing NET Connecion available No connecion Communicaion error OPEN Opening valve - Driver disabled (*) CLOSE Closing valve - Driver disabled (*) Acive alarm - - Driver powered Driver no powered - Tab. 3.a (*) Awaiing compleion of he iniial configuraion 3. Assembling he display board (accessory) The display board, once insalled, is used o perform all he configuraion and programming operaions on he driver. I displays he operaing saus, he significan values for he ype of conrol ha he driver is performing (e.g. superhea conrol), he alarms, he saus of he digial inpus and he relay oupu. Finally, i can save he configuraion parameers for one driver and ransfer hem o a second driver (see he procedure for upload and download parameers). For insallaion: remove he cover, pressing on he fasening poins; fi he display board, as shown; he display will come on, and if he driver is being commissioned, he guided configuraion procedure will sar. press s variable displayed 2 2nd variable displayed 3 relay saus alarm (press HELP ) 5 proecor acivaed 6 conrol saus Display wriings Conrol saus Proecion acive Operaion LowSH Low superhea Sandby LOP Low evaporaion emperaure POS Posiioning MOP High evaporaion emperaure WAIT Wai HiTcond High condensing emperaure CLOSE Closing Tab. 3.b Keypad Buon Funcion Prg opens he screen for enering he password o access programming mode. if in alarm saus, displays he alarm queue; in he Manufacurer level, when scrolling he parameers, shows he explanaion screens (Help). Esc exis he Programming (Service/Manufacurer) and Display modes; afer seing a parameer, exis wihou saving he changes. navigaes he display screens; increases/decreases he value. UP/ DOWN Ener swiches from he display o parameer programming mode; confirms he value and reurns o he lis of parameers. Tab. 3.c Noe: he variables displayed as sandard can be seleced by configuring he parameers Variable on display and Variable 2 on display accordingly. See he lis of parameers. press Fig. 3.b Imporan: he driver is no acivaed if he configuraion procedure has no been compleed. The fron panel now holds he display and he keypad, made up of 6 buons ha, pressed alone or in combinaion, are used o perform all he configuraion and programming operaions on he driver. 3.3 Display mode (display) Display mode is used o display he useful variables showing he operaion of he sysem. The variables displayed depend on he ype of conrol seleced.. press Esc o swich o he sandard display; 2. press UP/DOWN: he display shows a graph of he superhea, he percenage of valve opening, he evaporaion pressure and emperaure and he sucion emperaure variables; 3. press UP/DOWN: he variables are shown on he display;. press Esc o exi display mode. 3

14 For he complee lis of he variables shown on he display, see he chaper: Table of parameers. 6. press UP/DOWN o selec he parameer o be se and ENTER o move o he value of he parameer; 7. press UP/DOWN o modify he value; 8. press ENTER o save he new value of he parameer; 9. repea seps 6, 7, 8 o modify he oher parameers; 0. press Esc o exi he procedure for modifying he Manufacurer parameers. 3. Fig. 3.d Programming mode (display) The parameers can be modified using he fron keypad. Access differs according o he user level: Service (Insaller) and manufacurer. Modifying he Service parameers IThe Service parameers, as well as he parameers for commissioning he driver, also include hose for he configuraion of he inpus, he relay oupu, he superhea se poin or he ype of conrol in general, and he proecion hresholds. See he able of parameers. Procedure:. press Esc one or more imes o swich o he sandard display; 2. press Prg: he display shows a screen wih he PASSWORD reques; 3. press ENTER and ener he password for he Service level: 22, saring from he righ-mos figure and confirming each figure wih ENTER;. if he value enered is correc, he firs modifiable parameer is displayed, nework address; 5. press UP/DOWN o selec he parameer o be se; 6. press ENTER o move o he value of he parameer; 7. press UP/DOWN o modify he value; 8. press ENTER o save he new value of he parameer; 9. repea seps 5, 6, 7, 8 o modify he oher parameers; 0. press Esc o exi he procedure for modifying he Service parameers. Fig. 3.f Noe: all he driver parameers can be modified by enering he Manufacurer level; if no buon is pressed, afer 5 min he display auomaically reurns o he sandard mode. Fig. 3.e Noe: if no buon is pressed, afer 5 min he display auomaically reurns o he sandard mode. Modifying he Manufacurer parameers The Manufacurer level is used o configure all he driver parameers, and consequenly, in addiion o he Service parameers, he parameers relaing o alarm managemen, he sensors and he configuraion of he valve. See he able of parameers.. press Esc one or more imes o swich o he sandard display; 2. press Prg : he display shows a screen wih he PASSWORD reques; 3. press ENTER and ener he Manufacurer level password: 66, saring from he righ-mos figure and confirming each figure wih ENTER;. if he value enered is correc, he lis of parameer caegories is shown: - Configuraion - Sensors - Conrol - Special - Alarm configuraion - Valve 5. press he UP/DOWN buons o selec he caegory and ENTER o access he firs parameer in he caegory;

15 EN. COMMISSIIN. Commissioning.2 uided commissioning procedure (display) ^dcz &$( Y^ gziz DI2 8dc[^\jgi^dc &$( 8dc[^\jgi^dc &$( CZildg` VYYgZhh CZildg` VYYgZhh 8dc[^\jgi^dc &$( 8dc[^\jgi^dc &$( CZildg` VYYgZhh CZildg` VYYgZhh &.&.- &.&.- 8dc[^\jgi^dc 8dc[^\jgi^dc CZildg` VYYgZh CZildg` VYYgZ && he firs parameer is displayed: press UP/DOWN o modify he nework address; value press Ener o move o he value of he parameer 8dc[^\jgi^dc &$( CZildg` VYYgZhh & 8dc[^\jgi^dc &$( CZildg` VYYgZhh 3 32 & DI2 ND TxRx ND VREF S S2 TEMP S2 whie black green COM NO 3 2 green brown yellow whie S3 S DI press Ener o confirm he press UP/DOWN o move o he value nex parameer, refrigeran repea seps 2, 3,, 5 o modify he values of he parameers: refrigeran, valve, pressure sensor S, main conrol; 8dc[^\jgi^dc :cy Xdc[^\jgVi N:H PRESS S check ha he elecrical connecions are correc; if he configuraion is correc exi he procedure, oherwise choose NO and reurn o sep 2; 8dc[^\jgi^dc :cy Xdc[^\jgVi^dc N:H CD ND TxRx S3 S DI Afer having fied he display: COM NO 3 2 ND VREF S S2 Once he elecrical connecions have been compleed (see he chaper on insallaion) and he power supply has been conneced, he operaions required for commissioning he driver depend on he ype of inerface used, however essenially involve seing jus parameers: refrigeran, valve, ype of pressure sensor S and ype of main conrol. Types of inerfaces: DISPLAY: afer having correcly configured he seup parameers, confirmaion will be requesed. Only afer confirmaion will he driver be enabled for operaion, he main screen will be shown on he display and conrol will be able o commence when requesed by he pco conroller via plan or when digial inpu DI closes. See paragraph.2; VPM: o enable conrol of he driver via VPM, se Enable EVD conrol o ; his is included in he safey parameers, in he special parameers menu, under8dc[^\jgi^dc &$( he corresponding access level.8dc[^\jgi^dc &$( However, he seup CZildg` VYYgZhh CZildg` VYYgZhh parameers should firs be se in he relaed &.menu. The driver will &.hen be enabled for operaion and conrol will be able o commence when requesed by he pco conroller via plan or when digial inpu DI closes. If due o error or for any oher reason Enable EVD conrol should be se o 0 (zero), he driver will immediaely sop conrol and will remain in sandby unil re-enabled, wih he valve sopped in he las posiion; SUPERVISOR: o simplify he commissioning of a considerable number of drivers using he supervisor, he seup operaion on he display can be limied o simply seing he nework address. The display will hen be able o be removed and he configuraion procedure posponed o a 8dc[^\jgi^dc &$( 8dc[^\jgi^dc &$( dc &$( laer sage using he supervisor or, if necessary, reconnecing he display. CZildg` VYYgZhh CZildg` VYYgZhh YgZhh & To enable conrol of he driver via supervisor, se& Enable EVD conrol ; his is included in he safey parameers, in he special parameers menu, under he corresponding access level. However, he seup parameers should firs be se in he relaed menu. The driver will hen be enabled for operaion and conrol will be able o commence when requesed by he pco conroller via plan or when digial inpu DI closes. As highlighed on he supervisor, inside of he yellow informaion field dc &$( green relaing o he Enable EVD conrol parameer, if due o error or for brown YYgZhh yellow any oher reason Enable whie EVD conrol should be se o 0 (zero), TEMP hes2 driver will immediaely sop conrol and will remain whie in sandby unil PRESS S black green re-enabled, wih he valve sopped in he las posiion; pco PRORAMMABLE CTROLLER: he firs operaion o be performed, if necessary, is o se he nework address using he display. If a plan, LAN or Modbus driver is used, conneced o a pco family conroller, he seup parameers will no need o be se and confirmed. In fac, he applicaion running on he pco will manage he correc values based on he uni conrolled. Consequenly, simply se he plan, LAN or Modbus address for he driver as required by he applicaion on he pco, and afer a few seconds communicaion will commence beween he wo insrumens and he driver auomaically be enabled for conrol. The main screen will shown on he display, which can hen be removed, and conrol will be commence when requesed by he pco conroller or digial inpu DI. The plan driver is he only version ha can sar conrol wih a signal from he pco conroller over he plan. If here is no communicaion beween he pco and he driver (see he paragraph plan error alarm ), he driver will be able o coninue conrol based on he saus of digial inpu. The LAN and RS85/Modbus drivers can be conneced o a pco conroller, bu only in supervisor mode. Conrol can only sar when digial inpu closes. 8dc[^\jgVo^dcZ &$( >cy^g^ood Y^ gziz &.- To simplify commissioning and avoid possible malfuncions, he driver will no sar unil he following have been configured:. nework address; 2. refrigeran; 3. valve;. pressure sensor S; 5. ype of main conrol, ha is, he ype of uni he superhea conrol 8dc[^\jgVo^dcZ &$( 8dc[^\jgVo^dcZ &$( 8dc[^\jgVo^dcZ &$( 8dc[^\jgVo^dcZ &$( is applied o. >cy^g^ood Y^ gziz >cy^g^ood Y^ gziz >cy^g^ood Y^ gziz >cy^g^ood Y^ gziz &.&.- &.&.- Noe: o exi he guided commissioning procedure press he DOWN buon repeaedly and finally confirm ha configuraion has been compleed. The guided procedure CANNOT be ended by pressing Esc; if he configuraion procedure ends wih a configuraion error, access Service parameer programming mode and modify he value of he parameer in quesion; if he valve and/or he pressure sensor used are no available in he lis, selec any model and end he procedure. Then he driver will 8dc[^\jgVo^dcZ &$( be8dc[^\jgvo^dcz &$( enabled for conrol, and i will be possible o ener Manufacurer >cy^g^ood Y^ gziz >cy^g^ood Y^ gziz & & programming mode and se he corresponding parameers manually. 8dc[^\jgVo^dcZ &$( >cy^g^ood Y^ gziz &.- 8dc[^\jgVo^dcZ 8dc[^\jgVo^dc >cy^g^ood Y^ g >cy^g^ood Y^ && 8dc[^\jgVo^dcZ Z[g^\ZgVciZ '' KVakdaV 8VgZa 8dc[^\jgVo^dcZ &$( >cy^g^ood Y^ gziz & 8dc[^\jgVo^dcZ &$( >cy^g^ood Y^ gziz & 8dc[^\jgVo^dcZ '$( 5 Z[g^\ZgVciZ '' KVakdaV 8VgZa EVD 8dc[^\jgVo^dcZ '$( Z[g^\ZgVciZ &()V evoluion rel KVakdaV 8VgZa 8dc[^\jgVo^dcZ HdcYV egzhh^ Cdc ji^a^ooviv Z\daVo^dcZ eg 7VcX]^ [g^\d$xz

16 Nework address The nework address assigns o he driver an address for he serial connecion o a supervisory sysem via RS85, and o a pco conroller via plan, LAN, Modbus. Parameer/descripion Def. Min. Max. UOM Configuraion Nework address Tab..a Refrigeran The ype of refrigeran is essenial for calculaing he superhea. In addiion, i is used o calculae he evaporaion and condensing emperaure based on he reading of he pressure sensor. Parameer/descripion Configuraion Refrigeran: R22; R3a; R0A; R07C; R0A; R507A; R290; R600; R600a; R77; R7; R728; R270; R7A; R22D Def. R0A Tab..b Valve Seing he ype of valve auomaically defines all he conrol parameers based on he manufacurer s daa for each model. In Manufacurer programming mode, he conrol parameers can hen be fully cusomised (see he paragraph valve parameers ) if he valve used is no in he sandard lis. In his case, he driver will deec he modificaion and indicae he ype of valve as Cusomised. Parameer/descripion Def. Configuraion Valve: CAREL CAREL ExV; E X V Alco EX; Alco EX5; Alco EX6; Alco EX7; Alco EX8 330Hz suggesed by CAREL; Alco EX8 500Hz specified by Alco; Sporlan SEI 0.5-; Sporlan SER.5-20; Sporlan SEI 30; Sporlan SEI 50; Sporlan SEH 00; Sporlan SEH 75; Danfoss ETS 25B; Danfoss ETS 50B; Danfoss ETS 00B; Danfoss ETS 250; Danfoss ETS 00 Tab..c Pressure sensor S Seing he ype of pressure sensor S defines he range of measuremen and he alarm limis based on he manufacurer s daa for each model, usually indicaed on he raing plae on he sensor. Parameer/descripion Configuraion Sensor S Raiomeric (OUT=0 o 5V) Elecronic (OUT= o 20mA) - o.2 barg -0.5 o 7barg -0. o 9.2 barg 0 o 0barg - o 9.3 barg 0 o 8.2barg 0 o 7.3 barg 0 o 25barg -0. o 3.2 barg 0 o 30barg 0 o 3.5 barg 0 o.8barg 0 o 5 barg remoe, -0.5 o 7 barg remoe, 0 o 0 barg remoe, 0 o 8.2 barg remoe, 0 o 25 barg remoe, 0 o 30 barg remoe, 0 o.8 barg Exernal signal ( o 20mA) Def. Raiom.: - o 9.3 barg Tab..d For he second and hird driver selec: remoe -0.5 o 7 barg. Noe: he range of measuremen by defaul is always in bar gauge (barg).in he manufacurer menu, he parameers corresponding o he range of measuremen and he alarms can be cusomised if he sensor used is no in he sandard lis. If modifying he range of measuremen, he driver will deec he modificaion and indicae he ype of sensor S as Cusomised. The sofware on he driver akes ino consideraion he uni of measure. If a range of measuremen is seleced and hen he uni of measure is changed (from bars o psi), he driver auomaically updaes in limis of he range of measuremen and he alarm limis.by defaul, he main conrol sensor S2 is se as CAREL NTC. Oher ypes of sensors can be seleced in he service menu. Unlike he pressure sensors, he emperaure sensors do no have any modifiable parameers relaing o he range of measuremen, and consequenly only he models indicaed in he lis can be used (see he chaper on Funcions and he lis of parameers). In any case, in manufacurer programming mode, he limis for he sensor alarm signal can be cusomised. Main conrol Seing he main conrol defines he operaing mode of he driver. Parameer/descripion Configuraion Main conrol Superhea conrol muliplexed cabine/cold room cabine/cold room wih on-board compressor perurbed cabine/cold room cabine/cold room wih sub-criical CO2 R0A condenser for sub-criical CO2 air-condiioner/chiller wih plae hea exchanger air-condiioner/chiller wih ube bundle hea exchanger air-condiioner/chiller wih finned coil hea exchanger air-condiioner/chiller wih variable cooling capaciy perurbed air-condiioner/chiller Special conrol EPR back-pressure ho gas bypass by pressure ho gas bypass by emperaure ranscriical CO 2 gas cooler analogue posiioner ( o 20 ma) analogue posiioner (0 o 0 V) Def. muliplexed cabine/cold room Tab..e The superhea se poin and all he parameers corresponding o PID conrol, he operaion of he proecors and he meaning and use of sensors S and/or S2 will be auomaically se o he values recommended by CAREL based on he seleced applicaion. During his iniial configuraion phase, only he superhea conrol mode can be se, which differs based on he applicaion (chiller, refrigeraed cabine, ec.). In he even of errors in he iniial configuraion, hese parameers can laer be accessed and modified inside he service or manufacurer menu. If he driver defaul parameers are resored (RESET procedure, see he chaper on Insallaion), when nex sared he display will again show he guided commissioning procedure. Aenion: in case wo pressure sensors are insalled S and S3, hey mus be of he same ype. I is no allowed o use a raiomeric sensor and an elecronic one. Noe: in he case of muliplexed sysems where he same pressure sensor is shared beween muliple drivers, choose he normal opion for he firs driver and he remoe opion for he remaining drivers. The same pressure ransducer can be shared beween a maximum of 5 drivers. Example: o use he same pressure sensor, -0.5 o 7 bars, for 3 drivers For he firs driver, selec: -0.5 o 7 barg 6

17 .3 Checks afer commissioning Afer commissioning: check ha he valve complees a full closing cycle o perform alignmen; se, if necessary, in Service or Manufacurer programming mode, he superhea se poin (oherwise keep he value recommended by CAREL based on he applicaion) and he proecion hresholds (LOP, MOP, ec.). See he chaper on Proecors.. Oher funcions By enering Service programming mode, oher ypes of main conrol can be seleced (ranscriical CO 2, ho gas bypass, ec.), as well as so-called special conrol funcions, which do no involve he superhea, acivaing auxiliary conrols ha use sensors S3 and/or S and seing he suiable values for he conrol se poin and he LowSH, LOP and MOP proecion hresholds (see he chaper on Proecors ), which depend on he specific characerisics of he uni conrolled. By enering Manufacurer programming mode, finally, he operaion of he driver can be compleely cusomised, seing he funcion of each parameer. If he parameers corresponding o PID conrol are modified, he driver will deec he modificaion and indicae he main conrol as Cusomised. 7

18 5. CTROL 5. Main and auxiliary conrol EVD evoluion feaures wo ypes of conrol main; auxiliary. Main conrol is always acive, while auxiliary conrol can be acivaed by parameer. Main conrol defines he operaing mode of he driver. The firs 0 seings refer o superhea conrol, he ohers are so-called special seings and are pressure or emperaure seings or depend on a conrol signal from an exernal conroller. Parameer/descripion Configuraion Main conrol Superhea conrol muliplexed cabine/cold room cabine/cold room wih on-board compressor perurbed cabine/cold room cabine/cold room wih sub-criical CO 2 R0A condenser for sub-criical CO 2 air-condiioner/chiller wih plae hea exchanger air-condiioner/chiller wih ube bundle hea exchanger air-condiioner/chiller wih finned coil hea exchanger air-condiioner/chiller wih variable cooling capaciy perurbed air-condiioner/chiller Special conrol EPR back-pressure ho gas bypass by pressure ho gas bypass by emperaure ranscriical CO 2 gas cooler analogue posiioner ( o 20 ma) analogue posiioner (0 o 0 V) Def. muliplexed cabine/ cold room Tab. 5.a Noe: R0A condensers wih subcriical CO2 refer o superhea conrol for valves insalled in cascading sysems where he flow of R0A (or oher refrigeran) in an exchanger acing as he CO 2 condenser needs o be conrolled; perurbed cabine/cold room or air-condiioner/chiller refer o unis ha momenarily or permanenly operae wih swinging condensing or evaporaion pressure. Auxiliary conrol feaures he following seings: Parameer/descripion Configuraion Auxiliary conrol Disabled High condensing emperaure proecion on S3 Modulaing hermosa on S Backup sensors on S3 & S Def. Disabled Tab. 5.b Imporan: he High condensing emperaure proecion and Modulaing hermosa auxiliary seings can only be enabled if he main conrol is superhea conrol (firs 0 seings). On he oher hand, Backup sensors on S3 & S can always be acivaed, once he relaed sensors have been conneced. The following paragraphs explain all he ypes of conrol ha can be se on EVD evoluion. 5.2 Superhea conrol The primary purpose of he elecronic valve is ensure ha he flow-rae of refrigeran ha flows hrough he nozzle corresponds o he flow-rae required by he compressor. In his way, he evaporaion process will ake place along he enire lengh of he evaporaor and here will be no liquid a he oule and consequenly in he branch ha runs o he compressor. As liquid is no compressible, i may cause damage o he compressor and even breakage if he quaniy is considerable and he siuaion lass some ime. Superhea conrol The parameer ha he conrol of he elecronic valve is based on is he superhea emperaure, which effecively ells wheher or no here is liquid a he end of he evaporaor. The superhea emperaure is calculaed as he difference beween: superheaed gas emperaure (measured by a emperaure sensor locaed a he end of he evaporaor) and he sauraed evaporaion emperaure (calculaed based on he reading of a pressure ransducer locaed a he end of he evaporaor and using he Tsa(P) conversion curve for each refrigeran). Superhea= Superheaed gas emperaure(*) Sauraed evaporaion emperaure (*) sucion If he superhea emperaure is high i means ha he evaporaion process is compleed well before he end of he evaporaor, and herefore flowrae of refrigeran hrough he valve is insufficien. This causes a reducion in cooling efficiency due o he failure o exploi par of he evaporaor. The valve mus herefore be opened furher. Vice-versa, if he superhea emperaure is low i means ha he evaporaion process has no concluded a he end of he evaporaor and a cerain quaniy of liquid will sill be presen a he inle o he compressor. The valve mus herefore be closed furher. The operaing range of he superhea emperaure is limied a he lower end: if he flow-rae hrough he valve is excessive he superhea measured will be near 0 K. This indicaes he presence of liquid, even if he percenage of his relaive o he gas canno be quanified. There is herefore un undeermined risk o he compressor ha mus be avoided. Moreover, a high superhea emperaure as menioned corresponds o an insufficien flow-rae of refrigeran. The superhea emperaure mus herefore always be greaer han 0 K and have a minimum sable value allowed by he valve-uni sysem. A low superhea emperaure in fac corresponds o a siuaion of probable insabiliy due o he urbulen evaporaion process approaching he measuremen poin of he sensors. The expansion valve mus herefore be conrolled wih exreme precision and a reacion capaciy around he superhea se poin, which will almos always vary from 3 o K. Se poin values ouside of his range are quie infrequen and relae o special applicaions. F S L C EVD evoluion S2 S CP M V EEV E P T Fig. 5.a 8

19 CP compressor EEV elecronic expansion valve C condenser V solenoid valve L liquid receiver E evaporaor F dewaering filer P pressure sensor (ransducer) S liquid indicaor T emperaure sensor For he wiring, see paragraph 2.7 eneral connecion diagram. PID parameers Superhea conrol, as for any oher mode ha can be seleced wih he main conrol parameer, is performed using PID conrol, which in is simples form is defined by he law: u()= K e() + e()d + T d de() d T i u() Valve posiion Ti Inegraion ime e() Error Td Derivaive ime K Proporional gain Noe ha conrol is calculaed as he sum of hree separae conribuions: proporional, inegral and derivaive. he proporional acion opens or closes he valve proporionally o he variaion in he superhea emperaure. Thus he greaer he K (proporional gain) he higher he response speed of he valve. The proporional acion does no consider he superhea se poin, bu raher only reacs o variaions. Therefore if he superhea value does no vary significanly, he valve will essenially remain saionary and he se poin canno be reached; he inegral acion is linked o ime and moves he valve in proporion o he deviaion of he superhea value from he se poin. The greaer he deviaions, he more inense he inegral acion; in addiion, he lower he value of T (inegraion ime), he more inense he acion will be. The inegraion ime, in summary, represens he inensiy of he reacion of he valve, especially when he superhea value is no near he se poin; he derivaive acion is linked o he speed of variaion of he superhea value, ha is, he gradien a which he superhea changes from insan o insan. I ends o reac o any sudden variaions, bringing forward he correcive acion, and is inensiy depends on he value of he ime Td (derivaive ime). Parameer/descripion Def. Min. Max. UOM CTROL Superhea se poin LowSH: soglia 80 (320) K ( R) PID: proporional gain PID: inegraion ime s PID: derivaive ime s Tab. 5.c See he EEV sysem guide for furher informaion on calibraing PID conrol. Noe: when selecing he ype of main conrol (boh superhea conrol and special modes), he PID conrol values suggesed by CAREL will be auomaically se for each applicaion. Proecor conrol parameers See he chaper on Proecors. Noe ha he proecion hresholds are se by he insaller/manufacurer, while he imes are auomaically se based on he PID conrol values suggesed by CAREL for each applicaion. Parameer/descripion Def. Min. Max. UOM MOP proecion: hreshold 50 LOP: 200 (392) C( F) hreshold MOP proecion: ineg. ime s SPECIAL HiTcond: hreshold (-76) 200 (392) C ( F) HiTcond: inegraion ime s Tab. 5.d 5.3 Special conrol EPR back-pressure This ype of conrol can be used in many applicaions in which a consan pressure is required in he refrigeran circui. For example, a refrigeraion sysem may include differen showcases ha operae a differen emperaures (showcases for frozen foods, mea or dairy). The differen emperaures of he circuis are achieved using pressure regulaors insalled in series wih each circui. The special EPR funcion (Evaporaor Pressure Regulaor) is used o se a pressure se poin and he PID conrol parameers required o achieve his. M E EVD evoluion V V2 EV M T T E S P EVD evoluion V V2 EV Fig. 5.b V Solenoid valve E Evaporaor V2 Thermosaic expasnion valve EV Elecronic valve For he wiring, see paragraph 2.7 eneral connecion diagram. This involves PID conrol wihou any proecors (LowSH, LOP, MOP, HiTcond, see he chaper on Proecors), wihou any valve unblock procedure and wihou auxiliary conrol. Conrol is performed on he pressure sensor value read by inpu S, compared o he se poin: EPR pressure se poin. Conrol is direc, as he pressure increases, he valve opens and vice-versa. Parameer/descripion Def. Min. Max. UOM CTROL EPR pressure se poin 3,5-20 (-290) 200 (2900) barg (psig) PID: proporional gain PID: inegraion ime s PID: derivaive ime s Tab. 5.e S P Parameer/descripion Def. Min. Max. UOM CTROL LowSH proecion: hreshold 5-0 (-72) superh. K( R) se poin. LowSH proecion: ineg. ime s LOP proecion: hreshold (-76) MOP: C( F) hreshold LOP proecion: ineg. ime s 9

20 Ho gas bypass by pressure This conrol funcion can be used o conrol cooling capaciy. If here is no reques from circui B, he compressor sucion pressure decreases and he bypass valve opens o le a greaer quaniy of ho gas flow and decrease he capaciy of he circui. C Ho gas bypass by emperaure This conrol funcion can be used o conrol cooling capaciy. On a refrigeraed cabine, if he ambien emperaure sensor measures an increase in he emperaure, he cooling capaciy mus also increase, and so he valve mus close. C L EV L F S EVD evoluion S CP P F S EVD evoluion S2 CP A B M V M V T V2 T V2 Fig. 5.c CP Compressor V Solenoid valve C Condenser V2 Thermosaic expasnion valve L Liquid receiver EV Elecronic valve F Dewaering filer E Evaporaor S Liquid indicaor For he wiring, see paragraph 2.7 eneral connecion diagram. This involves PID conrol wihou any proecors (LowSH, LOP, MOP, HiTcond, see he chaper on Proecors), wihou any valve unblock procedure and wihou auxiliary conrol. Conrol is performed on he ho gas bypass pressure sensor value read by inpu S, compared o he se poin: Ho gas bypass pressure se poin. Conrol is reverse, as he pressure increases, he valve closes and viceversa. Parameer/descripion Def. Min. Max. UOM CTROL Ho gas bypass pressure se poin 3-20 (290) 200 (2900) barg (psig) PID: proporional gain PID: inegraion ime s PID: derivaive ime s Tab. 5.f E E M V T V2 E Fig. 5.d CP Compressor V Solenoid valve C Condenser V2 Thermosaic expasnion valve L Liquid receiver EV Elecronic valve F Dewaering filer E Evaporaor S Liquid indicaor For he wiring, see paragraph 2.7 eneral connecion diagram. This involves PID conrol wihou any proecors (LowSH, LOP, MOP, HiTcond, see he chaper on Proecors), wihou any valve unblock procedure and wihou auxiliary conrol. Conrol is performed on he ho gas bypass emperaure sensor value read by inpu S2, compared o he se poin: Ho gas bypass emperaure se poin. Conrol is reverse, as he emperaure increases, he valve closes. Parameer/descripion Def. Min. Max. UOM CTROL Ho gas bypass emperaure se poin C ( F) (-76) (392) PID: proporional gain PID: derivaive ime s PID: inegraion ime s Tab. 5.g T 20

21 Transcriical CO2 gas cooler This soluion for he use of CO 2 in refrigeraing sysems wih a ranscriical cycle involves using a gas cooler, ha is a refrigeran/air hea exchanger resisan o high pressures, in place of he condenser. In ranscriical operaing condiions, for a cerain gas cooler oule emperaure, here is pressure ha opimises he efficiency of he sysem: Analogue posiioner ( o 20 ma) The valve will be posiioned linearly depending on he value of he o 20 ma inpu for analogue valve posiioning read by inpu S. There is no PID conrol nor any proecion (LowSH, LOP, MOP, HiTcond, see he chaper on Proecors), no valve unblock procedure and no auxiliary conrol. Se= pressure se poin in a gas cooler wih ranscriical CO 2 T= gas cooler oule emperaure Defaul value: A= 3.3, B= In he simplified diagram shown below, he simples soluion in concepual erms is shown. The complicaions in he sysems arise due o he high pressure and he need o opimise efficiency. EV EVD evoluion S -20 ma regulaor T P A EVD evoluion 00% S P S2 T C 0% 20 ma Fig. 5.f IHE M V T V2 E Fig. 5.e CP Compressor V2 Thermosaic expasnion valve C as cooler EV Elecronic valve E Evaporaor IHE Inside hea exchanger V Solenoid valve For he wiring, see paragraph 2.7 eneral connecion diagram. This involves PID conrol wihou any proecors (LowSH, LOP, MOP, HiTcond, see he chaper on Proecors), wihou any valve unblock procedure and wihou auxiliary conrol. Conrol is performed on he gas cooler pressure sensor value read by inpu S, wih a se poin depending on he gas cooler emperaure read by inpu S2; consequenly here is no a se poin parameer, bu raher a formula: CO 2 gas cooler pressure se poin = Coefficien A * Tgas cooler (S2) + Coefficien B. The se poin calculaed will be a variable ha is visible in display mode. Conrol is direc, as he pressure increases, he valve opens. Parameer/descripion Def. Min. Max. UOM SPECIAL Transcriical CO2: coefficien A 3, Transcriical CO2 coefficien B -22, CTROL PID: proporional gain PID: derivaive ime s PID: inegraion ime s CP EV Elecronic valve A Valve opening For he wiring, see paragraph 2.7 eneral connecion diagram. Forced closing will only occur when digial inpu DI opens, hus swiching beween conrol saus and sandby. The pre-posiioning and reposiioning procedures are no performed. Manual posiioning can be enabled when conrol is acive or in sandby. Analogue posiioner (0 o 0 Vdc) The valve will be posiioned linearly depending on he value of he 0 o 0 V inpu for analogue valve posiioning read by inpu S. There is no PID conrol nor any proecion (LowSH, LOP, MOP, HiTcond), no valve unblock procedure and no auxiliary conrol, wih corresponding forced closing of he valve and changeover o sandby saus. EV A 00% EVD evoluion 0% S2 0-0 Vdc 0 0 Vdc Fig. 5.g regulaor EV Elecronic valve A Valve opening For he wiring, see paragraph 2.7 eneral connecion diagram. Imporan: he pre-posiioning and reposiioning procedures are no performed. Manual posiioning can be enabled when conrol is acive or in sandby. T P 2

22 5. Auxiliary conrol Auxiliary conrol can be acivaed a he same ime as main conrol, and uses he sensors conneced o inpus S3 and/or S. Parameer/descripion CFIURATI Auxiliary conrol: Disabled; High condensing emperaure proecion on S3; Modulaing hermosa on S; Backup sensors on S3 & S Def. Disabled Tab. 5.h For he high condensing emperaure proecion (only available wih superhea conrol), an addiional pressure sensor is conneced o S3 ha measures he condensing pressure. For he modulaing hermosa funcion (only available wih superhea conrol), an addiional emperaure sensor is conneced o S ha measures he emperaure on used o perform emperaure conrol (see he corresponding paragraph). The las opion (available always) requires he insallaion of boh sensors S3 & S, he firs pressure and he second emperaure. Noe: if only one backup sensor is fied, under he manufacure parameers, he sensor hresholds and alarm managemen can be se separaely. HITCond proecion (high condensing emperaure) The funcional diagram is shown below. F S L C EVD evoluion S S2 S3 CP P funcion decreases he cooling capaciy of he evaporaor by closing he expansion valve. By correcly seing he relaed parameers (see below), a very sable cabine emperaure can be achieved around he se poin, wihou ever closing he solenoid valve. The funcion is defined by hree parameers: se poin, differenial and offse. Parameer/descripion Def. Min. Max. UOM SPECIAL Modulaing hermosa: se poin C ( F) (-76) (392) Modulaing hermosa: differenial 0, 0, 00 C ( F) (0,2) (80) Modulaing hermosa: superhea se poin offse (0= funcion disabled) 0 0 (0) 00 (80) K ( R) Tab. 5.i The firs wo should have values similar o hose se on he conroller for he cabine or uiliy whose emperaure is being modulaed. The offse, on he oher hand, defines he inensiy in closing he valve as he emperaure decreases: he greaer he offse, he more he valve will be modulaed. The funcion is only acive in a emperaure band beween he se poin and he se poin plus he differenial. Imporan: he Modulaing hermosa funcion should no be used on sand-alone refrigeraion unis, bu only in cenralised sysems. In fac, in he former case closing he valve would cause a lowering of he pressure and consequenly shu down he compressor. Examples of operaion:. offse oo low (or funcion disabled) S se poin + diff se poin F M V EEV Fig. 5.h CP Compressor EEV Elecronic expansion valve C Condenser V Solenoid valve L Liquid receiver E Evaporaor F Dewaering filer P Pressure sensor (ransducer) S Liquid indicaor T Temperaure sensor For he wiring, see paragraph 2.7 eneral connecion diagram. As already menioned, he HITCond proecion can only be enabled if he conrol measures he condensing pressure/emperaure, and responds moderaely by closing he valve in he even where he condensing emperaure reaches excessive values, o preven he compressor from shuing down due o high pressure. The condensing pressure sensor mus be conneced o inpu S3. Modulaing hermosa This funcion is used, by connecing a emperaure sensor o inpu S, o modulae he opening of he elecronic valve so as o limi he lowering of he emperaure read and consequenly reach he conrol se poin. This is useful in applicaions such as he muliplexed cabines o avoid he ypical swings in air emperaure due o he / conrol (hermosaic) of he solenoid valve. A emperaure sensor mus be conneced o inpu S, locaed in a similar posiion o he one used for he radiional emperaure conrol of he cabine. In pracice, he close he conrolled emperaure ges o he se poin, he more he conrol E P T offse oo high offse correc diff= differenial F= modulaing hermosa funcion S= emperaure S se poin + diff se poin F S se poin + diff se poin F 22

23 C L F EVD evoluion S S2 S CP S M V EEV T E P T Fig. 5.i CP Compressor EEV Elecronic expansion valve C Condenser V Solenoid valve L Liquid receiver E Evaporaor F Dewaering filer P Pressure sensor (ransducer) S Liquid indicaor T Temperaure sensor For he wiring, see paragraph 2.7 eneral connecion diagram. Backup sensors on S3 & S In his case, pressure sensor S3 and emperaure sensor S will be used o replace sensors S and S2 respecively in he even of fauls on one or boh, so as o guaranee a high level of reliabiliy of he conrolled uni. C L F EVD evoluion S S2 S3 S CP S M V EEV E P T P T Fig. 5.j CP Compressor EEV Elecronic expansion valve C Condenser V Solenoid valve L Liquid receiver E Evaporaor F Dewaering filer P Pressure sensor (ransducer) S Liquid indicaor T Temperaure sensor For he wiring, see paragraph 2.7 eneral connecion diagram. 23

24 6. FUNCTIS 6. Inpus and oupus Analogue inpus The parameers in quesion concern he choice of he ype of pressure sensor S and S3 and he choice of he emperaure sensor S2 and S, as well as he possibiliy o calibrae he pressure and emperaure signals. As regards he choice of pressure sensor S, see he chaper on Commissioning. Inpus S2, S The opions are sandard NTC sensors, high emperaure NTC, combined emperaure and pressure sensors and 0 o 0 Vdc inpu. For S he 0 o 0 Vdc inpu is no available. When choosing he ype of sensor, he minimum and maximum alarm values are auomaically se. See he chaper on Alarms. The auxiliary sensor S is associaed wih he Modulaing hermosa funcion or can be used as a backup sensor for he main sensor S2. Type CAREL code Range CAREL NTC (0KΩ a 25 C) NTC0**HP00 NTC0**WF00 NTC0**HF00-50T05 C CAREL NTC-HT HT (50KΩ a 25 C) NTC0**HT00 0T20 C (50 C per 3000 h) Combined NTC SPKP**T0-0T20 C Aenion: in case of combined NTC sensor, selec also he parameer relevan o he corresponding raiomeric pressure sensor. Parameer/descripion Def. CFIURATI Sensor S2: CAREL NTC CAREL NTC; CAREL NTC-HT high T; Combined NTC SPKP**T0; 0-0 V exernal signal Sensor S: CAREL NTC CAREL NTC; CAREL NTC-HT high T; Combined NTC SPKP**T0 Tab. 6.a Inpu S3 The auxiliary sensor S3 is associaed wih he high condensing emperaure proecion or can be used as a backup sensor for he main sensor S. If he sensor being used is no included in he lis, selec any 0 o 5 V raiomeric or elecronic o 20 ma sensor and hen manually modify he minimum and maximum measuremen in he manufacurer parameers corresponding o he sensors. Imporan: sensors S3 and S appear as NOT USED if he auxiliary conrol parameer is se as disabled. If auxiliary conrol has any oher seing, he manufacurer seing for he sensor used will be shown, which can be seleced according o he ype. Auxiliary conrol High condensing emperaure proecion Modulaing hermosa Backup sensors Parameer/descripion Configuraion Sensor S3: Raiomeric (OUT=0 o 5 V) Elecronic (OUT= o 20 ma) - o.2 barg -0.5 o 7 barg -0. o 9.2 barg 0 o 0 barg - o 9.3 barg 0 o 8.2 bar 0 o 7.3 barg 0 o 25 barg -0. o 3.2 barg 0 o 30 barg 0 o 3.5 barg 0 o.8 barg 0 o 5 barg remoe, -0.5 o 7 barg remoe, 0 o 0 barg remoe, 0 o 8.2 barg remoe, 0 o 25 barg remoe, 0 o 30 barg remoe, 0 o.8 barg Variable displayed S3 S S3,S Tab. 6.b Def. Raiom.: - o 9.3 barg Tab. 6.c 2 Calibraing pressure sensors S, S3 and emperaure sensors S2 and S (offse and gain parameers) In case i is necessary o make a calibraion: of he pressure sensor, S and/or S3 i is possible o use he offese parameer, which represens a consan ha is added o he signal across he enire range of measuremen, and can be expressed in barg/psig. If he o 20 ma signal coming from an exernal conroller on inpu S needs o be calibraed, boh he offse and he gain parameers can be used, he laer which modifies he gradien of he line in he field from o 20 ma. of he emperaure sensor, S2 and/or S i is possible o use he offse parameer, which represens a consan ha is added o he signal across he enire range of measuremen, and can be expressed in C/ F. If he 0 o 0 Vdc signal coming from an exernal conroller on inpu S2 needs o be calibraed, boh he offse and he gain parameers can be used, he laer which modifies he gradien of he line in he field from 0 o 0 Vdc. A A= offse, B= gain B 20 ma Fig. 6.a A B 0 0 Vdc Parameer/descripion Def. Min. Max. UOM Sonde S: calibraion offse 0-60 (-870), 60 (870), barg (psig), ma S: calibraion gain, o 20 ma S2: calibraion offse 0-20 (-290), (290), C ( F), vol 20 S2: calibraion gain, 0 o 0 V S3: calibraion offse 0-60 (-870) 60 (870) barg (psig) S: calibraion offse 0-20 (-36) 20 (36) C ( F) Tab. 6.d Digial inpus Digial inpu DI is used o acivae he conrol: digial inpu closed: conrol acivaed; digial inpu open: driver in sandby (see paragraph Conrol saus ). As regards digial inpu 2, if configured, his is used o ell he driver he acive defros saus: Defros acive= conac DI2 closed. When enering Manufacurer programming mode, he sar delay afer defros can be se (see he following paragraphs). Parameer/descripion Def. Min. Max. UOM Configuraion Configuraion of DI2 Disabled; Opimise valve conrol afer Disabled defros. Conrol Sar delay afer defros min Tab. 6.e

25 Oupu The relay oupu can be configured o conrol he solenoid valve or as an alarm relay oupu. See he chaper on Alarms. Parameer/descripion Def. Configuraion Relay configuraion: Alarm Disabled; Alarm relay (open when alarm acive); Solenoid valve relay relay (open in sandby); Valve relay +alarm (open in sandby and conrol alarms) Tab. 6.f 6.2 Conrol saus The elecronic valve driver has 6 differen ypes of conrol saus, each of which may correspond o a specific phase in he operaion of he refrigeraion uni and a cerain saus of he driver-valve sysem. The saus may be as follows: forced closing: iniialisaion of he valve posiion when swiching he insrumen on; sandby: no emperaure conrol, uni ; wai: opening of he valve before saring conrol, also called preposiioning, when powering he uni and in he delay afer defrosing; conrol: effecive conrol of he elecronic valve, uni ; posiioning: sep-change in he valve posiion, corresponding o he sar of conrol when he cooling capaciy of he conrolled uni varies (only for plan EVD conneced o a pco); sop: end of conrol wih he closing of he valve, corresponds o he end of emperaure conrol of he refrigeraion uni, uni. Forced closing Forced closing is performed afer he driver is powered-up and corresponds o a number of closing seps equal o he parameer Closing seps, based on he ype valve seleced. This is used o realign he valve o he physical posiion corresponding o compleely closed. The driver and he valve are hen ready for conrol and boh aligned a 0 (zero). On power-up, firs a forced closing is performed, and hen he sandby phase sars. Paramero/descripion Def. Min. Max. UOM Valve EEV closing seps sep Tab. 6.g Sandby Sandby corresponds o a siuaion of res in which no signals are received o conrol he elecronic valve. This normally occurs: when he refrigeraion uni sops operaing, eiher when swiched off manually (e.g. from he buon, supervisor) or when reaching he conrol se poin; during defross, excep for hose performed by reversing of he cycle (or ho gas bypass). In general, i can be said ha he elecronic valve driver is in sandby when he compressor sops or he conrol solenoid valve closes. The valve is closed or open, delivering around 25% of he flow-rae of refrigeran, based on he seing of he valve open in sandby parameer. In his phase, manual posiioning can be acivaed. Parameer/descripion Def. Min. Max. UOM Valve open in sandby 0=disabled=valve closed; =enabled = valve open 25% Tab. 6.h Pre-posiioning/sar conrol If during sandby a conrol reques is received, before saring conrol he valve is moved o a precise iniial posiion. Parameer/descripion Def. Min. Max. UOM Conrol Valve opening a sar (evaporaor/valve capaciy raio) % Tab. 6.i 25 This parameer should be se based on he raio beween he raed cooling capaciy of he evaporaor and he valve (e.g. raed evaporaor cooling capaciy: 3kW, raed valve cooling capaciy: 0kW, valve opening = 3/0 = 33%). If he capaciy reques is 00%: Opening (%)= (Valve opening a sar-up); If he capaciy reques is less han 00% (capaciy conrol): Opening (%)= (Valve opening a sar-up) (Curren uni cooling capaciy), where he curren uni cooling capaciy is sen o he driver via plan by he pco conroller. If he driver is sand-alone, his is always equal o 00%. Noe: his procedure is used o anicipae he movemen and bring he valve significanly closer o he operaing posiion in he phases immediaely afer he uni sars; if here are problems wih liquid reurn afer he refrigeraion uni sars or in unis ha frequenly swich on-off, he valve opening a sar-up mus be decreased. If here are problems wih low pressure afer he refrigeraion uni sars, he valve opening mus be increased. Wai When he calculaed posiion has been reached, regardless of he ime aken (his varies according o he ype of valve and he objecive posiion), here is a consan 5 second delay before he acual conrol phase sars. This is o creae a reasonable inerval beween sandby, in which he variables have no meaning, as here is no flow of refrigeran, and he effecive conrol phase. Conrol The conrol reques can be received by he closing of digial inpu or via he nework (plan). The solenoid or he compressor are acivaed when he valve, following he pre-posiioning procedure, has reached he calculaed posiion. The following figure represens he sequence of evens for saring conrol of he refrigeraion uni. Conrol delay afer defros Some ypes of refrigeraing cabines have problems conrolling he elecronic valve in he operaing phase afer defros. In his period (0 o 20 min afer defrosing), he superhea measuremen may be alered by he high emperaure of he copper pipes and he air, causing excessive opening of he elecronic valve for exended periods, in which here is reurn of liquid o he compressors ha is no deeced by he sensors conneced o he driver. In addiion, he accumulaion of refrigeran in he evaporaor in his phase is difficul o dissipae in a shor ime, even afer he sensors have sared o correcly measure he presence of liquid (superhea value low or null). The driver can receive informaion on he defros phase in progress, via digial inpu 2. The Sar delay afer defros parameer is used o se a delay when conrol resumes so as o overcome his problem. During his delay, he valve will remain in he pre-posiioning poin, while all he normal sensor alarms procedures, ec. managed. Parameer/descripion Def. Min. Max. UOM Conrol Sar delay afer defros min Tab. 6.j Imporan: if he superhea emperaure should fall below he se poin, conrol resumes even if he delay has no ye elapsed.

26 A S P R T W Fig. 6.b A Conrol reques W Wai S Sandby T Pre-posiioning ime P Pre-posiioning T2 Sar delay afer defros R Conrol Time Posiioning (change cooling capaciy) This conrol saus is only valid for he plan driver. If here is a change in uni cooling capaciy of a leas 0%, sen from he pco via he plan, he valve is posiioned proporionally. In pracice, his involves reposiioning saring from he curren posiion in proporion o how much he cooling capaciy of he uni has increased or decreased in percenage erms. When he calculaed posiion has been reached, regardless of he ime aken (his varies according o he ype of valve and he posiion), here is a consan 5 second delay before he acual conrol phase sars. Noe: if informaion is no available on he variaion in uni cooling capaciy, his will always be considered as operaing a 00% and herefore he procedure will never be used. In his case, he PID conrol mus be more reacive (see he chaper on Conrol) so as o reac promply o variaions in load ha are no communicaed o he driver. T2 Sop/end conrol The sop procedure involves closing he valve from he curren posiion unil reaching 0 seps, plus a furher number of seps so as o guaranee complee closing. Following he sop phase, he valve reurns o sandby. A S ST R T Fig. 6.d A Conrol reques R Conrol S Sandby T Sop posiion ime ST Sop Time 6.3 Special conrol saus As well as normal conrol saus, he driver can have 3 special ypes of saus relaed o specific funcions: manual posiioning: his is used o inerrup conrol so as o move he valve, seing he desired posiion; recover physical valve posiion: recover physical valve seps when fully opened or closed; unblock valve: forced valve movemen if he driver considers i o be blocked. A C NP Manual posiioning Manual posiioning can be acivaed a any ime during he sandby or conrol phase. Manual posiioning, once enabled, is used o freely se he posiion of he valve using he corresponding parameer. Parameer/descripion Def. Min. Max. UOM Conrol Enable manual valve posiioning Manual valve posiion sep Tab. 6.k R T3 W Fig. 6.c A Conrol reques T3 Reposiioning ime C Change capaciy W Wai NP Reposiioning Time R Conrol Conrol is placed on hold, all he sysem and conrol alarms are enabled, however neiher conrol nor he proecors can be acivaed. Manual posiioning hus has prioriy over any saus/proecion of he driver. Noe: he manual posiioning saus is NOT saved when resaring afer a power failure. in for any reason he valve needs o be kep saionary afer a power failure, proceed as follows: -- remove he valve saor; -- in Manufacurer programming mode, under he configuraion parameers, se he PID proporional gain= 0. The valve will remain sopped a he iniial opening posiion, se by corresponding parameer. 26

27 Recover physical valve posiion Parameer/descripion Def. Min. Max. UOM Valve Synchronise valve posiion in opening 0 - Synchronise valve posiion in closing 0 - Tab. 6.l This procedure is necessary as he sepper moor inrinsically ends o lose seps during movemen. iven ha he conrol phase may las coninuously for several hours, i is probable ha from a cerain ime on he esimaed posiion sen by he valve driver does no correspond exacly o he physical posiion of he movable elemen. This means ha when he driver reaches he esimaed fully closed or fully open posiion, he valve may physically no be in ha posiion. The Synchronisaion procedure allows he driver o perform a cerain number of seps in he suiable direcion o realign he valve when fully opened or closed. Noe: realignmen is in inrinsic par of he forced closing procedure and is acivaed whenever he driver is sopped/sared and in he sandby phase; he possibiliy o enable or disable he synchronisaion procedure depends on he mechanics of he valve. When he seing he valve parameer, he wo synchronisaion parameers are auomaically defined. The defaul values should no be changed. Unblock valve This procedure is only valid when he driver is performing superhea conrol. Unblock valve is an auomaic safey procedure ha aemps o unblock a valve ha is supposedly blocked based on he conrol variables (superhea, valve posiion). The unblock procedure may or may no succeed depending on he exen of he mechanical problem wih he valve. If for 0 minues he condiions are such as o assume he valve is blocked, he procedure is run a maximum of 5 imes. The sympoms of a blocked valve doe no necessarily mean a mechanical blockage. They may also represen oher siuaions: mechanical blockage of he solenoid valve upsream of he elecronic valve (if insalled); elecrical damage o he solenoid valve upsream of he elecronic valve; blockage of he filer upsream of he elecronic valve (if insalled); elecrical problems wih he elecronic valve moor; elecrical problems in he driver-valve connecion cables; incorrec driver-valve elecrical connecion; elecronic problems wih he valve conrol driver; secondary fluid evaporaor fan/pump malfuncion; insufficien refrigeran in he refrigeran circui; refrigeran leaks; lack of subcooling in he condenser; elecrical/mechanical problems wih he compressor; processing residues or moisure in he refrigeran circui. Noe: he valve unblock procedure is noneheless performed in each of hese cases, given ha i does no cause mechanical or conrol problems. Therefore, also check hese possible causes before replacing he valve. 27

28 7. PROTECTORS These are addiional funcions ha are acivaed in specific siuaions ha are poenially dangerous for he uni being conrolled. They feaure an inegral acion, ha is, he acion increases gradually when moving away from he acivaion hreshold. They may add o or overlap (disabling) normal PID superhea conrol. By separaing he managemen of hese funcions from PID conrol, he parameers can be se separaely, allowing, for example, normal conrol ha is less reacive ye much faser in responding when exceeding he acivaion limis of one of he proecors. When he superhea value falls below he hreshold, he sysem eners low superhea saus, and he inensiy wih which he valve is closed is increased: he more he superhea falls below he hreshold, he more inensely he valve will close. The LowSH hreshold, mus be less han or equal o he superhea se poin. The low superhea inegraion ime indicaes he inensiy of he acion: he lower he value, he more inense he acion. The inegraion ime is se auomaically based on he ype of main conrol. 7. Proecors The proecors are : LowSH, low superhea; LOP, low evaporaion emperaure; MOP, high evaporaion emperaure; HiTcond, high condensing emperaure. SH Low_SH_TH Low_SH Noe: The HITCond proecion requires an addiional sensor (S3) o hose normally used, eiher insalled on he driver, or conneced via LAN or plan o a conroller. The proecors have he following main feaures: acivaion hreshold: depending on he operaing condiions of he conrolled uni, his is se in Service programming mode; inegraion ime, which deermines he inensiy (if se o 0, he proecor is disabled): se auomaically based on he ype of main conrol; alarm, wih acivaion hreshold (he same as he proecor) and delay (if se o 0 disables he alarm signal). R D Fig. 7.a SH Superhea A Alarm Low_SH_TH Low_SH proecion hreshold D Alarm delay Low_SH Low_SH proecion Time B Auomaic alarm rese B Noe: The alarm signal is independen from he effeciveness of he proecor, and only signals ha he corresponding hreshold has been exceeded. If a proecor is disabled (null inegraion ime), he relaive alarm signal is also disabled. Each proecor is affeced by he proporional gain parameer (K) for he PID superhea conrol. The higher he value of K, he more inense he reacion of he proecor will be. Characerisics of he proecors Proecion Reacion Rese LowSH Inense closing Immediae LOP Inense opening Immediae MOP Moderae closing Conrolled HiTcond Moderae closing Conrolled Tab. 7.a Reacion: summary descripion of he ype of acion in conrolling he valve. Rese: summary descripion of he ype of rese following he acivaion of he proecor. Rese is conrolled o avoid swings around he acivaion hreshold or immediae reacivaion of he proecor. LowSH (low superhea) The proecor is acivaed so as o preven he reurn of liquid o he compressor due o excessively low superhea valves from. Parameer/descripion Def. Min. Max. UOM CTROL LowSH proecion: hreshold 5-0 (-72) se poin K ( R) superhea LowSH proecion: inegraion s ime ALARM CFIURATI Low superhea alarm delay (LowSH) (0= alarm disabled) s Tab. 7.b 28 LOP (low evaporaion pressure) LOP= Low Operaing Pressure The LOP proecion hreshold is applied as a sauraed evaporaion emperaure value so ha i can be easily compared agains he echnical specificaions supplied by he manufacurers of he compressors. The proecor is acivaed so as o preven oo low evaporaion emperaures from sopping he compressor due o he acivaion of he low pressure swich. The proecor is very useful in unis wih compressors on board (especially muli-sage), where when saring or increasing capaciy he evaporaion emperaure ends o drop suddenly. When he evaporaion emperaure falls below he low evaporaion emperaure hreshold, he sysem eners LOP saus and is he inensiy wih which he valve is opened is increased. The furher he emperaure falls below he hreshold, he more inensely he valve will open. The inegraion ime indicaes he inensiy of he acion: he lower he value, he more inense he acion. Parameer/descripion Def. Min. Max. UOM CTROL LOP proecion: hreshold (-72) Proecion MOP: C ( F) hreshold LOP proecion: inegraion ime s ALARM CFIURATI Low evaporaion emperaure alarm delay (LOP) (0= alarm disabled) s Tab. 7.c The inegraion ime is se auomaically based on he ype of main conrol. Noe: he LOP hreshold mus be lower hen he raed evaporaion emperaure of he uni, oherwise i would be acivaed unnecessarily, and greaer han he calibraion of he low pressure swich, oherwise i would be useless. As an iniial approximaion i can be se o a value exacly half-way beween he wo limis indicaed; he proecor has no purpose in muliplexed sysems (showcases) where he evaporaion is kep consan and he saus of he individual

29 elecronic valve does no affec he pressure value; he LOP alarm can be used as an alarm o highligh refrigeran leaks by he circui. A refrigeran leak in fac causes an abnormal lowering of he evaporaion emperaure ha is proporional, in erms of speed and exen, o he amoun of refrigeran dispersed. LOP ALARM T_EVAP LOP_TH Fig. 7.b T_EVAP Evaporaion emperaure D Alarm delay LOP_TH Low evaporaion emperaure proecion hreshold ALARM Alarm LOP LOP proecion Time B Auomaic alarm rese MOP (high evaporaion pressure) MOP= Maximum Operaing Pressure. The MOP proecion hreshold is applied as a sauraed evaporaion emperaure value so ha i can be easily compared agains he echnical specificaions supplied by he manufacurers of he compressors. The proecor is acivaed so as o preven oo high evaporaion emperaures from causing an excessive workload for he compressor, wih consequen overheaing of he moor and possible acivaion of he hermal proecor. The proecor is very useful in unis wih compressor on board if saring wih a high refrigeran charge or when here are sudden variaions in he load. The proecor is also useful in muliplexed sysems (showcases), as allows all he uiliies o be enabled a he same ime wihou causing problems of high pressure for he compressors. To reduce he evaporaion emperaure, he oupu of he refrigeraion uni needs o be decreased. This can be done by conrolled closing of he elecronic valve, implying superhea is no longer conrolled, and an increase in he superhea emperaure. The proecor will hus have a moderae reacion ha ends o limi he increase in he evaporaion emperaure, keeping i below he acivaion hreshold while rying o sop he superhea from increasing as much as possible. Normal operaing condiions will no resume based on he acivaion of he proecor, bu raher on he reducion in he refrigeran charge ha caused he increase in emperaure. The sysem will herefore remain in he bes operaing condiions (a lile below he hreshold) unil he load condiions change. Parameer/descripion Def. Min. Max. UOM CTROL MOP proecion: hreshold 50 Proecion LOP: 200 C ( F) hreshold (392) MOP proecion: inegraion ime s ALARM CFIURATI High evaporaion emperaure alarm delay (MOP) (0= alarm disabled) s Tab. 7.d The inegraion ime is se auomaically based on he ype of main conrol. When he evaporaion emperaure rises above he MOP hreshold, he sysem eners MOP saus, superhea conrol is inerruped o allow he pressure o be conrolled, and he valve closes slowly, rying o limi he evaporaion emperaure. As he acion is inegral, i depends direcly on he difference beween he evaporaion emperaure and he acivaion D B hreshold. The more he evaporaion emperaure increases wih reference o he MOP hreshold, he more inensely he valve will close. The inegraion ime indicaes he inensiy of he acion: he lower he value, he more inense he acion. T_EVAP MOP_TH MOP_TH - MOP PID ALARM D Fig. 7.c T_EVAP Evaporaion emperaure MOP_TH MOP hreshold PID PID superhea conrol ALARM Alarm MOP MOP proecion Time D Alarm delay Imporan: he MOP hreshold mus be greaer han he raed evaporaion emperaure of he uni, oherwise i would be acivaed unnecessarily. The MOP hreshold is ofen supplied by he manufacurer of he compressor. I is usually beween 0 C and 5 C. Imporan: if he closing of he valve also causes an excessive increase in he sucion emperaure (S2), he valve will be sopped o preven overheaing he compressor windings, awaiing a reducion in he refrigeran charge. A he end of he MOP proecion funcion, superhea conrol resars in a conrolled manner o preven he evaporaion emperaure from exceeding he hreshold again. HiTcond (high condensing emperaure) To acivae he high condensing emperaure proecor (HiTcond), a pressure sensor mus be conneced o inpu S3. The proecor is acivaed so as o preven oo high evaporaion emperaures from sopping he compressor due o he acivaion of he high pressure swich. Parameer/descripion Def. Min. Max. UOM SPECIAL HiTcond: hreshold C ( F) (-76) (392) HiTcond: inegraion ime s ALARM CFIURATI High condensing emperaure alarm delay (HiTcond) (0= alarm disabled) s Tab. 7.e The inegraion ime is se auomaically based on he ype of main conrol. Noe: he proecor is very useful in unis wih compressors on board if he air-cooled condenser is undersized or diry/malfuncioning in he more criical operaing condiions (high ouside emperaure); he proecor has no purpose in muliplexed sysems (showcases), where he condensing pressure is mainained consan and he saus of he individual elecronic valves does no affec he pressure value. 29

30 To reduce he condensing emperaure, he oupu of he refrigeraion uni needs o be decreased. This can be done by conrolled closing of he elecronic valve, implying superhea is no longer conrolled, and an increase in he superhea emperaure. The proecor will hus have a moderae reacion ha ends o limi he increase in he condensing emperaure, keeping i below he acivaion hreshold while rying o sop he superhea from increasing as much as possible. Normal operaing condiions will no resume based on he acivaion of he proecor, bu raher on he reducion in he ouside emperaure. The sysem will herefore remain in he bes operaing condiions (a lile below he hreshold) unil he environmenal condiions change. T_CD T_CD_TH T_CD_TH - HiTcond PID ALARM D Fig. 7.d T_CD Condensing emperaure T_CD_ TH HiTcond: hreshold HiTcond HiTcond proecion saus ALARM Alarm PID PID superhea conrol Time D Alarm delay Noe: he HiTcond hreshold mus be greaer han he raed condensing emperaure of he uni and lower hen he calibraion of he high pressure swich; he closing of he valve will be limied if his causes an excessive decrease in he evaporaion emperaure. 30

31 8. PARAMETERS TABLE user* Parameer/descripion Def. Min. Max. UOM CFIURAZIE A Nework address I 38 A Refrigeran: R0A I 3 0 R22 R3a R0A R07C R0A R507A R290 R600 R600a R77 R7 R728 R270 R7A R22D A Valve: CAREL E X V I CAREL E X V Alco EX Alco EX5 Alco EX6 Alco EX7 Alco EX8 330Hz suggesed by CAREL Alco EX8 500Hz specified by Alco Sporlan SEI 0.5- Sporlan SER.5-20 Sporlan SEI 30 Sporlan SEI 50 Sporlan SEH 00 Sporlan SEH 75 Danfoss ETS 25B Danfoss ETS 50B Danfoss ETS 00B Danfoss ETS 250 Danfoss ETS 00 A Sensor S: Raiomeric: I 6 3 Raiomeric (OUT=0 o 5 V) Elecronic (OUT= o 20 ma) - o 9.3 barg - o.2 barg -0.5 o 7 barg -0. o 9.2 barg 0 o 0 barg - o 9.3 barg 0 o 8.2 bar 0 o 7.3 barg 0 o 25 barg -0. o 3.2 barg 0 o 30 barg 0 o 3.5 barg 0 o.8 barg 0 o 5 barg remoe, -0.5 o 7 barg remoe, 0 o 0 barg remoe, 0 o 8.2 barg remoe, 0 o 25 barg remoe, 0 o 30 barg remoe, 0 o.8 barg Exernal signal, o 20 ma A Main conrol: Muliplexed I 5 2 Muliplexed cabine/cold room Cabine/cold room wih on-board compressor Perurbed cabine/cold room Cabine/cold room wih sub-criical CO 2 R0A condenser for sub-criical CO2 Air-condiioner/chiller wih plae hea exchanger Air-condiioner/chiller wih ube bundle hea exchanger Air-condiioner/chiller wih finned coil hea exchanger Air-condiioner/chiller wih variable cooling capaciy Perurbed air-condiioner/chiller EPR back-pressure Ho gas bypass by pressure Ho gas bypass by emperaure Transcriical CO2 gas cooler Analogue posiioner ( o 20 ma) Analogue posiioner (0 o 0 V) Analogue posiioner (0 o 0 V) cabine/cold room A Sensor S2: CAREL NTC I 7 CAREL NTC CAREL NTC-HT high emp. Combined NTC SPKP**T0 0 o 0 V exernal signal A Auxiliary conrol: Disabled High condensing emperaure proecion on S3 Modulaing hermosa on S Backup sensors on S3 & S Disabled I 8 5 Type ** CAREL SVP Modbus Noes 3

32 user* Parameer/descripion Def. Min. Max. UOM A Sensor S3 Raiomeric: I 9 6 Raiomeric (OUT=0 o 5 V) Elecronic (OUT= o 20 ma) - o 9.3 barg - o.2 barg -0.5 o 7 barg -0. o 9.2 barg 0 o 0 barg - o 9.3 barg 0 o 8.2 bar 0 o 7.3 barg 0 o 25 barg -0. o 3.2 barg 0 o 30 barg 0 o 3.5 barg 0 o.8 barg 0 o 5 barg remoe, -0.5 o 7 barg remoe, 0 o 0 barg remoe, 0 o 8.2 barg remoe, 0 o 25 barg remoe, 0 o 30 barg remoe, 0 o.8 barg A Relay configuraion: Alarm relay I 2 39 Disabled Alarm relay (open when alarm acive) Solenoid valve relay (open in sandby) Valve relay +alarm (open in sandby & conrol alarms) A Sensor S: CAREL NTC I 20 7 CAREL NTC CAREL NTC-HT high emperaure Combined NTC SPKP**T0 A Configuraion of DI2: Disabled I 0 37 Disabled Opimise valve conrol afer defros C Variable on display: Superhea I 5 72 Valve opening Valve posiion Curren cooling capaciy Conrol se poin Superhea Sucion emperaure Evaporaion emperaure Evaporaion pressure Condensing emperaure Condensing pressure Modulaing hermosa emperaure EPR pressure Ho gas bypass pressure Ho gas bypass emperaure CO 2 gas cooler oule emperaure CO 2 gas cooler oule pressure CO 2 gas cooler pressure se poin Sensor S reading Sensor S2 reading Sensor S3 reading Sensor S reading o 20 ma inpu 0 o 0 V inpu C Variable 2 on display (vedere variable on display) Valve opening I 6 73 C Sensor S alarm managemen: No acion Forced valve closing Valve in fixed posiion Use backup sensor S3 Valve in fixed posiion I 2 5 C C C Sensor S2 alarm managemen: No acion Forced valve closing Valve in fixed posiion Use backup sensor S Sensor S3 alarm managemen: No acion Forced valve closing Valve in fixed posiion Sensor S alarm managemen: No acion Forced valve closing Valve in fixed posiion Valve in fixed posiion Type ** CAREL SVP Modbus I No acion I No acion I 27 5 C Language: Ialiano; English Ialiano C Uni of measure: C(K), barg; F( R), psig C(K), barg I 2 8 Noes 32

33 user* Parameer/descripion Def. Min. Max. UOM SDE C S: calibraion offse 0-60 (-870), (870), 60 barg (psig) A 3 33 ma C S: calibraion gain, o 20 ma A C Pressure S: MINIMUM value (-290) Pressure S: barg (psig) A 32 3 MAXIMUM value C Pressure S: MAXIMUM value 9,3 Pressure S: 200 (2900) barg (psig) A MINIMUM value C Pressure S: MINIMUM alarm value (-290) Pressure S: barg (psig) A MAXIMUM alarm value C Pressure S: MAXIMUM alarm value 9,3 Pressure S: 200 (2900) barg (psig) A MINIMUM alarm value C S2: calibraion offse 0-20 (-290), (290), 20 C ( F), vol A 0 C S2: calibraion gain, 0 o 0 V A 3 2 C Temperaure S2: MINIMUM alarm value Temperaure C( F) A 6 5 S2: alarm MA- XIMUM value C Temperaure S2: MAXIMUM alarm value 05 Temperaure 200 (392) C( F) A 3 S2: MINIMUM alarm value C S3: calibraion offse 0-60 (-870) 60 (870) barg (psig) A 35 3 C Pressure S3: MINIMUM value (-290) Pressure S3: barg (psig) A MAXIMUM value C Pressure S3: MAXIMUM value 9,3 Pressure S3: 200 (2900) barg (psig) A 3 30 MINIMUM value C Pressure S3: MINIMUM alarm value (-290) Pressure S3: barg (psig) A 0 39 MAXIMUM alarm value C Pressure S3: MAXIMUM alarm value 9,3 Pressure S3: 200 (2900) barg (psig) A MINIMUM alarm value C S: calibraion offse 0-20 (-36) 20 (36) C ( F) A 2 C Temperaure S: MINIMUM alarm value (-76) Temperaure C ( F) A 7 6 S: MAXIMUM alarm value C Temperaure S: MAXIMUM alarm value 05 Temperaure 200 (392) C ( F) A 5 S: MINIMUM alarm value CTROL A Superhea se poin LowSH: hreshold 80 (32) K( R) A 50 9 A Valve opening a sar (evaporaor/valve capaciy raio) % I 37 6 C Valve open in sandby D (0=disabled=valve closed; =enabled = valve open 25%) C Sar delay afer defros min I 0 67 A Ho gas bypass emperaure se poin 0-60 (-76) 200 (392) C ( F) A A Ho gas bypass pressure se poin 3-20 (-290) 200 (2900) barg (psig) A 62 6 A EPR pressure se poin 3,5-20 (-290) 200 (2900) barg (psig) A C PID: proporional gain A 8 7 C PID: inegraion ime s I C PID: derivaive ime s A 9 8 A LowSH proecion: hreshold 5-0 (-72) superhea se K( R) A poin C LowSH proecion: inegraion ime s A 55 5 A LOP proecion: hreshold (-76) MOP proecion: C ( F) A 52 5 hreshold C LOP proecion: inegraion ime s A 5 50 A MOP proecion: hreshold 50 LOP proecion: 200 (392) C ( F) A 5 53 hreshold C MOP proecion: inegraion ime s A A Enable manual valve posiioning D 2 23 A Manual valve posiion sep I SPECIAL A HiTcond: hreshold (-76) 200 (392) C ( F) A C HiTcond: inegraion ime s A A Modulaing hermosa: se poin 0-60 (-76) 200 (392) C ( F) A 6 60 A Modulaing hermosa: differenial 0, 0, (0,2) 00 (80) C ( F) A C Modulaing hermosa: superhea se poin offse 0 0 (0) 00 (80) K ( R) A C Coefficien A for CO 2 conrol 3, A Type ** CAREL SVP Modbus Noes 33

34 user* Parameer/descripion Def. Min. Max. UOM C Coefficien B for CO 2 conrol -22, A 6 63 ALARM CFIURATI C Low superhea alarm delay (LowSH) s I 3 70 (0= alarm disabled) C Low evaporaion emperaure alarm delay (LOP) s I 68 (0= alarm disabled) C High evaporaion emperaure alarm delay (MOP) s I 2 69 (0= alarm disabled) C High condensing emperaure alarm delay (HiTcond) s I 7 (0= alarm disabled) C Low sucion emperaure alarm hreshold (-76) 200 (392) C( F) A C Low sucion emperaure alarm delay s I 9 36 (0= alarm disabled) VALVE C Minimum EEV seps sep I C Maximum EEV seps sep I 3 58 C EEV closing seps sep I C Raed EEV speed sep/s I C Raed EEV curren ma I C EEV holding curren ma I C EEV duy cycle % I 3 6 C Synchronise posiion in opening 0 - D 20 9 C Synchronise posiion in closing 0 - D 2 20 * User: A= Service (insaller), C= Manufacurer. **Type of variable: A= analogue, D= digial, I= ineger Type ** CAREL SVP Modbus Noes Tab. 8.a 8. Uni of measure In he configuraion parameers menu, wih access by manufacurer password, he user can choose he uni of measure for he driver: inernaional sysem ( C, K, barg); imperial sysem ( F, R, psig). Aenion: he drivers EVD evoluion-plan (code EVD000E*), conneced in plan o a pco conroller, do no manage he change of he uni of measure. Noe: he unis of measure K and R relae o degrees Kelvin or Rankine adoped for measuring he superhea and he relaed parameers. When changing he uni of measure, all he values of he parameers saved on he driver and all he measuremens read by he sensors will be recalculaed. This means ha when changing he unis of measure, conrol remains unalered. Example : The pressure read is 00 barg, his will be immediaely convered o he corresponding value of 50 psig. Example 2: The superhea se poin parameer se o 0 K will be immediaely convered o he corresponding value of 8 R. Example 3: The Temperaure S: maximum alarm value parameer, se o 50 C, will be immediaely convered o he corresponding value of 302 F Noe: because of some inernal arihmeics limiaions of he driver, i will no be possible o conver he pressure values higher han 200 barg (2900 psig) and he emperaure values higher han 200 C (392 F). 3

35 8.2 Variables shown on he display The able below shows he variables available in display mode, depending on he seing of he Main conrol and Auxiliary conrol parameers: press he UP/DOWN buon o ener display mode; press he DOWN buon o move o he nex variable/screen; press Esc o reurn o he sandard display. Main conrol Variable displayed Superhea conrol Auxiliary conrol Transcriical CO 2 Ho gas bypass / HiTcond Modulaing emperaure hermosa Ho gas bypass / pressure EPR backpressure Analogue posiioning Valve opening(%) Valve posiion (sep) Curren cooling capaciy unià Conrol se poin Superhea Sucion emperaure Evaporaion emperaure Evaporaion pressure Condensing emperaure Condensing pressure Modulaing hermosa emperaure EPR pressure (back pressure) Ho gas bypass pressure Ho gas bypass emperaure CO 2 gas cooler oule emperaure CO 2 gas cooler oule pressure CO 2 gas cooler pressure se poin Sensor S reading Sensor S2 reading Sensor S3 reading Sensor S reading o 20 ma inpu value 0 o 0 Vdc inpu value Saus of digial inpu DI(*) Saus of digial inpu DI2(*) EVD firmware version Display firmware version Tab. 8.b (*) Digial inpu saus: 0= open, = closed. Noe: he readings of sensors S, S2, S3, S are always displayed, regardless of wheher or no he sensor is conneced. 8.3 Variables only accessible via serial link Descripion Defaul Min Max Type CAREL SVP Modbus R/W Sensor S reading 0-20 (-290) 200 (2900) A 0 R Sensor S2 reading 0-60 (-870) 200 (392) A 2 R Sensor S3 reading 0-20 (-290) 200 (2900) A 3 2 R Sensor S reading 0-60 (-76) 200 (392) A 3 R Sucion emperaure 0-60 (-76) 200 (392) A 5 R Evaporaion emperaure 0-60 (-76) 200 (392) A 6 5 R Evaporaion pressure 0-20 (-290) 200 (2900) A 7 6 R Ho gas bypass emperaure 0-60 (-76) 200 (392) A 8 7 R EPR pressure (back pressure) 0-20 (-290) 200 (2900) A 9 8 R Superhea 0-0 (-72) 80 (32) A 0 9 R Condensing pressure 0-20 (-290) 200 (2900) A 0 R Condensing emperaure 0-60 (-76) 200 (392) A 2 R Modulaing hermosa emperaure 0-60 (-76) 200 (392) A 3 2 R Ho gas bypass pressure 0-20 (-290) 200 (2900) A 3 R CO 2 gas cooler oule pressure 0-20 (-290) 200 (2900) A 5 R CO 2 gas cooler oule emperaure 0-60 (-76) 200 (392) A 6 5 R Valve opening A 7 6 R CO2 gas cooler pressure se poin 0-20 (-290) 200 (2900) A 8 7 R o 20 ma inpu value 20 A 9 8 R 0 o 0 V inpu value A 20 9 R Conrol se poin 0-60 (-76) 200 (392) A 2 20 R Driver firmware version A 25 2 R Valve posiion I 3 R Curren uni cooling capaciy I 7 3 R/W 35

36 Descripion Defaul Min Max Type CAREL SVP Modbus R/W Low sucion emperaure 0 0 D 0 R LAN error 0 0 D 2 R EEPROM damaged 0 0 D 3 2 R Sensor S 0 0 D 3 R Sensor S2 0 0 D 5 R Sensor S3 0 0 D 6 5 R Sensor S 0 0 D 7 6 R EEV moor error 0 0 D 8 7 R Relay saus 0 0 D 9 8 R LOP (low evaporaion emperaure) 0 0 D 0 9 R MOP (high evaporaion emperaure) 0 0 D 0 R LowSH (low superhea) 0 0 D 2 R HiTcond (high condensing emperaure ) 0 0 D 3 2 R Saus of digial inpu DI 0 0 D 3 R Saus of digial inpu DI2 0 0 D 5 R Enable EVD conrol 0 0 D 22 2 R/W Tab. 8.c Type of variable: A= analogue, D= digial, I= ineger SVP= variable address wih CAREL proocol on 85 serial card. Modbus : variable address wih Modbus proocol on 85 serial card. ALARMS ALARMS 36

37 9. ALARMS 9. Alarms There are wo ypes of alarms: sysem: valve moor, EEPROM, sensor and communicaion; conrol: low superhea, LOP, MOP, high condensing emperaure, low sucion emperaure. The acivaion of he alarms depends on he seing of he hreshold and acivaion delay parameers. Seing he delay o 0 disables he alarms. The EEPROM uni parameers and operaing parameers alarm always sops conrol. All he alarms are rese auomaically, once he causes are no longer presen. The alarm relay conac will open if he relay is configured as alarm relay using he corresponding parameer. The signalling of he alarm even on he driver depends on wheher he LED board or he display board is fied, as shown in he able below. Noe: he alarm LED only comes on for he sysem alarms, and no for he conrol alarms. Example: display sysem alarm on LED board: EVD evoluion he power required o close he valve. The display shows boh ypes of alarms, in wo differen modes: sysem alarm: on he main page, he ALARM message is displayed, flashing. Pressing he Help buon displays he descripion of he alarm and, a he op righ, he oal number of acive alarms. Fig. 9.b conrol alarm: nex o he flashing ALARM message, he main page shows he ype of proecor acivaed. Fig. 9.c Fig. 9.a Noe: he alarm LED comes on o signal a mains power failure only if he E*** module (accessory) has been conneced, guaraneeing Noe: o display he alarm queue, press he Help buon and scroll using he UP/DOWN buons; he proecor alarms can be disabled by seing he corresponding delay o zero. Table of alarms Type of alarm Cause of alarm LED Display Relay Rese Effec on conrol Checks/ soluions Sensor S Sensor S2 Sensor S3 Sensor S LowSH (low superhea) LOP (low evaporaion emp.) MOP (high evaporaion emperaure) HiTcond (high condensing emperaure ) Low sucion emperaure Sensor S fauly or exceeded se alarm range Sensor S2 fauly or exceeded se alarm range Sensor S3 fauly or exceeded se alarm range Sensor S fauly or exceeded se alarm range LowSH proecion acivaed LOP proecion acivaed MOP proecion acivaed HiTcond proecion acivaed Threshold and delay ime exceeded red alarm LED red alarm LED red alarm LED red alarm LED ALARM flashing ALARM flashing ALARM flashing ALARM flashing - ALARM & LowSH flashing - ALARM & LOP flashing - ALARM & MOP flashing - ALARM & MOP flashing Depends on configuraion parameer Depends on configuraion parameer Depends on configuraion parameer Depends on configuraion parameer Depends on configuraion parameer Depends on configuraion parameer Depends on configuraion parameer Depends on configuraion parameer - ALARM flashing Depends on configuraion parameer 37 auomaic auomaic auomaic auomaic auomaic auomaic auomaic auomaic Depends on parameer Sensor S alarm managemen Depends on parameer Sensor S2 alarm managemen Depends on parameer Sensor S3 alarm managemen Depends on parameer Sensor S alarm managemen Proecion acion already acive Proecion acion already acive Proecion acion already acive Proecion acion already acive Check he sensor connecions. Check he Sensor S alarm managemen, and Pressure S: MINIMUM & MAXI- MUM alarm value parameers Check he sensor connecions. Check he Sensor S2 alarm managemen, and Temperaure S2: MINIMUM & MAXIMUM alarm value parameers Check he sensor connecions. Check he Sensor S3 alarm managemen, and Pressure S3: MINIMUM & MAXI- MUM alarm value parameers Check he sensor connecions. Check he Sensor S alarm managemen, and Temperaure S: MINIMUM and MAXIMUM alarm value parameers Check he LowSH proecor: alarm hreshold and delay parameers Check he LOP proecor: alarm hreshold and delay parameers Check he MOP proecor: alarm hreshold and delay parameers Check he LowSH proecor: alarm hreshold and delay parameers auomaic No effec Check he hreshold and delay parameers.

38 Type of alarm Cause of alarm LED Display Relay Rese Effec on conrol Checks/ soluions EEEPROM damaged red alarm ALARM flashing LED Toal shudown Replace he driver/conac service EEPROM for operaing and/or uni parameers damaged EEV moor error Valve moor faul red alarm LED plan error (EVD plan only) LAN error ( EVD LAN RS85/ModBus) plan nework communicaion error plan nework connecion error Nework communicaion error Connecion error green NET LED flashing NET LED off NET LED flashing NET LED off ALARM flashing ALARM flashing ALARM flashing Depends on configuraion parameer Depends on configuraion parameer Depends on configuraion parameer Depends on configuraion parameer Replace driver/conac service auomaic Inerrupion Check he connecions and he condiion of he moor auomaic auomaic Conrol based on ID Conrol based on ID Check he nework address seings Check he connecions and ha he pco is on and working No message No change auomaic No effec Check he nework address seings No message No change auomaic No effec Check he connecions and ha he pco is on and working Tab. 9.a 9.2 Alarm relay configuraion The relay conac is open when he driver is no powered. During normal operaion, i can be disabled (and hus will be always open) or configured as: alarm relay: during normal operaion, he relay conac is closed, and opens when any alarm is acivaed. I can be used o swich off he compressor and he sysem in he even of alarms. solenoid valve relay: during normal operaion, he relay conac is closed, and is open only in sandby. There is no change in he even of alarms. solenoid valve relay + alarm: during normal operaion, he relay conac is closed, and opens in sandby and/or for LowSH, MOP, HiTcond and low sucion emperaure alarms. This is because following such alarms, he user may wan o proec he uni by sopping he flow of refrigeran or swiching off he compressor. The LOP alarm is excluded, as in he even of low evaporaion emperaure closing he solenoid valve would worsen he siuaion. L N COM, NO L N COM NO Fig. 9.d Phase Neural Alarm relay oupu NC C NO Parameer/descripion Relay configuraion: Disabled Alarm relay (open when alarm acive) Solenoid valve relay (open in sandby) Valve relay +alarm (open in sandby & conrol alarms) Def. Alarm relay Tab. 9.b Noe: if configured as an alarm relay, o send he alarm signal o a remoe device (siren, ligh), connec a relay o he oupu, according o he following diagram: 9.3 Sensor alarms The sensor alarms are par of he sysem alarms. When he value measured by one of he sensors is ouside of he field defined by he parameers corresponding o he alarm limis, an alarm is acivaed. The limis can be se independenly of he range of measuremen. Consequenly, he field ouside of which he alarm is signalled can be resriced, o ensure greaer safey of he conrolled uni. Noe: he alarm limis can also be se ouside of he range of measuremen, o avoid unwaned sensor alarms. In his case, he correc operaion of he uni or he correc signalling of alarms will no be guaraneed; by defaul, afer having seleced he ype of sensor used, he alarm limis will be auomaically se o he limis corresponding o he range of measuremen of he sensor. 38

39 Parameer/descripion Def. Min. Max. UOM SDE Pressure S: MINIMUM alarm value (S_AL_MIN) (-290) S_AL_MAX barg (psig) Pressure S: MAXIMUM alarm value (S_AL_MAX) 9,3 S_AL_MIN 200 (2900) barg (psig) Temperaure S2: MINIMUM alarm value (S2_AL_MIN) S2_AL_MAX C/ F Temperaure S2: MAXIMUM alarm value (S2_AL_MAX) 05 S2_AL_MIN 200 (392) C ( F) Pressure S3: MINIMUM alarm value (S3_AL_MIN) S3_AL_MAX barg (psig) Pressure S3: MAXIMUM alarm value (S3_AL_MAX) 9,3 S3_AL_MIN 200 (2900) barg (psig) Temperaure S: MINIMUM alarm value (S_AL_MIN) S_AL_MAX C/ F Temperaure S: MAXIMUM alarm value (S_AL_MAX) 05 S_AL_MIN 200 (392) C ( F) Tab. 9.c The behaviour of he driver in response o sensor alarms can be configured, using he manufacurer parameers. The opions are: no acion (conrol coninues bu he correc measuremen of he variables is no guaraneed); forced closing of he valve (conrol sopped); valve forced o he iniial posiion (conrol sopped); use he backup sensor (valid only for sensor S and S2 alarms, conrol coninues). Parameer/descripion CFIURATI Sensor S alarm managemen: No acion Forced valve closing Valve in fixed posiion Use backup sensor S3 Sensor S2 alarm managemen: No acion Forced valve closing Valve in fixed posiion Use backup sensor S Sensor S3 alarm managemen: No acion Forced valve closing Valve in fixed posiion Sensor S alarm managemen: No acion Forced valve closing Valve in fixed posiion CTROL Valve opening a sar (evaporaor/valve capaciy raio) Def. Valve in fixed posiion Valve in fixed posiion No acion No acion 50 Tab. 9.d Low sucion emperaure alarm The low sucion emperaure alarm is no linked o any proecion funcion. I feaures a hreshold and a delay, and is useful in he even of sensor or valve malfuncions o proec he compressor using he relay o conrol he solenoid valve or o simply signal a possible risk. In fac, he incorrec measuremen of he evaporaion pressure or incorrec configuraion of he ype of refrigeran may mean he superhea calculaed is much higher han he acual value, causing an incorrec and excessive opening of he valve. A low sucion emperaure measuremen may in his case indicae he probable flooding of he compressor, wih corresponding alarm signal. If he alarm delay is se o 0 s, he alarm is disabled. The alarm is rese auomaically, wih a fixed differenial of 3 C above he acivaion hreshold. Relay acivaion for conrol alarms As menioned in he paragraph on he configuraion of he relay, in he even of LowSH, MOP, HiTcond and low sucion emperaure alarms, he driver relay will open boh when configured as an alarm relay and configured as a solenoid + alarm relay. In he even of LOP alarms, he driver relay will only open if configured as an alarm relay. Parameer/descripion Def. Min. Max. UOM CTROL LowSH proecion: hreshold 5-0 (-72) superhea K ( R) se poin LowSH proecion: inegraion ime s LOP proecion: hreshold (-76) MOP: C ( F) hreshold LOP proecion: inegraion ime s MOP proecion: hreshold 50 LOP: 200 (392) C ( F) soglia MOP proecion: inegraion ime s SPECIAL HiTcond: hreshold (-76) 200 (392) C ( F) HiTcond: inegraion ime s ALARM CFIURATI Low superhea alarm delay (LowSH) s (0= alarm disabled) Low evaporaion emperaure alarm delay (LOP) (0= alarm disabled) s High evaporaion emperaure alarm s delay (MOP) (0= alarm disabled) High condensing emperaure alarm s delay (HiTcond) (0= alarm disabled) Low sucion emperaure alarm (-76) 200 (392) C ( F) hreshold Low sucion emperaure alarm delay s Tab. 9.e 9. Conrol alarms These are alarms ha are only acivaed during conrol. Proecor alarms The alarms corresponding o he LowSH, LOP, MOP and HiTcond proecors are only acivaed during conrol when he corresponding acivaion hreshold is exceeded, and only when he delay ime defined by he corresponding parameer has elapsed. If a proecor is no enabled (inegraion ime= 0 s), no alarm will be signalled. If before he expiry of he delay, he proecor conrol variable reurns back inside he corresponding hreshold, no alarm will be signalled. Noe: his is a likely even, as during he delay, he proecion funcion will have an effec. 9.5 EEV moor alarm In he even of incorrec connecion or damage o he valve moor, an alarm will be signalled (see he able of alarms) and he driver will go ino wai saus, as i can longer conrol he valve. The alarm is indicaed by he LED NET and is rese auomaically, afer which conrol will resume immediaely. Imporan: afer having resolved he problem wih he moor, i is recommended o swich he driver off and on again o realign he posiion of he valve. If his is no possible, he auomaic procedure for synchronising he posiion may help solve he problem, noneheless correc conrol will no be guaraneed unil he nex synchronisaion. If he delay relaing o he conrol alarms is se o 0 s, he alarm is disabled. The proecors are sill acive, however. The alarms are rese auomaically. 39

40 9.6 plan error alarm If he connecion o he plan nework is offline for more han 6s due o an elecrical problem, he incorrec configuraion of he nework addresses or he malfuncion of he pco conroller, a plan error alarm will be signalled. The plan error affecs he conrol of he driver as follows: case : uni in sandby, digial inpu DI disconneced; he driver will remain permanenly in sandby and conrol will no be able o sar; case 2: uni in conrol, digial inpu DI disconneced: he driver will sop conrol and will go permanenly ino sandby; case 3: uni in sandby, digial inpu DI conneced: he driver will remain in sandby, however conrol will be able o sar if he digial inpu is closed. In his case, i will sar wih curren cooling capaciy = 00%; case : uni in conrol, digial inpu DI conneced: he driver will remain in conrol saus, mainaining he value of he curren cooling capaciy. If he digial inpu opens, he driver will go o sandby and conrol will be able o sar again when he inpu closes. In his case, i will sar wih curren cooling capaciy = 00%. 9.7 LAN error alarm (for LAN and RS85/ Modbus driver) If he driver used is fied for LAN or RS85/Modbus connecion o a supervisor or oher ype of conroller, no LAN error will be signalled, and he siuaion will have no affec on conrol. The green NET LED will however indicae any problems in he line. The NET LED flashing or off indicaes he problem has lased more han 50 s. 0

41 0. roubleshooing The following able liss a series of possible malfuncions ha may occur when saring and operaing he driver and he elecronic valve. These cover he mos common problems and are provided wih he aim of offering an iniial response for resolving he problem. PROBLEM CAUSE SOLUTI The superhea value measured is incorrec The probe does no measure correc values Check ha he pressure and he emperaure measured are correc and ha he probe posiion is correc. Check ha he minimum and maximum pressure parameers for he pressure ransducer se on he driver correspond o he range of he pressure probe insalled. Check he correc probe elecrical connecions. Liquid reurns o he compressor during conrol Liquid reurns o he compressor only afer defrosing (for muliplexed cabines only) Liquid reurns o he compressor only when saring he conroller (afer being ) The superhea value swings around he se poin wih an ampliude greaer han C In he sar-up phase wih high evaporaor emperaures, he evaporaion pressure is high The ype of refrigeran se is incorrec The ype of valve se is incorrec The valve is conneced incorrecly (roaes in reverse) and is open The superhea se poin is oo low Low superhea proecion ineffecive Saor broken or conneced incorrecly Valve suck open The valve opening a sar parameer is oo high on many cabines in which he conrol se poin is ofen reached (for muliplexed cabines only) The pause in conrol afer defrosing is oo shor The superhea emperaure measured by he driver afer defrosing and before reaching operaing condiions is very low for a few minues The superhea emperaure measured by he driver does no reach low values, bu here is sill reurn of liquid o he compressor rack Many cabines defrosing a he same ime The valve is significanly oversized The valve opening a sar parameer is se oo high The condensing pressure swings The superhea swings even wih he valve se in manual conrol (in he posiion corresponding o he average of he working values) The superhea does NOT swing wih he valve se in manual conrol (in he posiion corresponding o he average of he working values) The superhea se poin is oo low MOP proecion disabled or ineffecive Refrigeran charge excessive for he sysem or exreme ransiory condiions a sar-up (for cabines only). Check and correc he ype of refrigeran parameer. Check and correc he ype of valve parameer. Check he movemen of he valve by placing i in manual conrol and closing or opening i compleely. One complee opening mus bring a decrease in he superhea and vice-versa. If he movemen is reversed, check he elecrical connecions. Increase he superhea se poin. Iniially se i o 2 C and check ha here is no longer reurn of liquid. Then gradually reduce he se poin, always making sure here is no reurn of liquid. If he superhea remains low for oo long wih he valve ha is slow o close, increase he low superhea hreshold and/or decrease he low superhea inegraion ime. Iniially se he hreshold 3 C below he superhea se poin, wih an inegraion ime of 3- seconds. Then gradually lower he low superhea hreshold and increase he low superhea inegraion ime, checking ha here is no reurn of liquid in any operaing condiions. Disconnec he saor from he valve and he cable and measure he resisance of he windings using an ordinary eser. The resisance of boh should be around 36 ohms. Oherwise replace he saor. Finally, check he elecrical connecions of he cable o he driver. Check if he superheaing is always low (<2 C) wih he valve posiion permanenly a 0 seps. If so, se he valve o manual conrol and close i compleely. If he superhea is always low, check he elecrical connecions and/or replace he valve. Decrease he value of he Valve opening a sar parameer on all he uiliies, making sure ha here are no repercussions on he conrol emperaure. Increase he value of he valve conrol delay afer defrosing parameer. Check ha he LowSH hreshold is greaer han he superhea value measured and ha he corresponding proecion is acivaed (inegraion ime >0 s). If necessary, decrease he value of he inegraion ime. Se more reacive parameers o bring forward he closing of he valve: increase he proporional facor o 30, increase he inegraion ime o 250 s and increase he derivaive ime o 0 sec. Sagger he sar defros imes. If his is no possible, if he condiions in he previous wo poins are no presen, increase he superhea se poin and he LowSH hresholds by a leas 2 C on he cabines involved. Replace he valve wih a smaller equivalen. Check he calculaion in reference o he raio beween he raed cooling capaciy of he evaporaor and he capaciy of he valve; if necessary, lower he value. Check he conroller condenser seings, giving he parameers blander values (e.g. increase he proporional band or increase he inegraion ime). Noe: he required sabiliy involves a variaion wihin +/- 0.5 bars. If his is no effecive or he seings canno be changed, adop elecronic valve conrol parameers for perurbed sysems Check for he causes of he swings (e.g. low refrigeran charge) and resolve where possible. If no possible, adop elecronic valve conrol parameers for perurbed sysems. As a firs approach, decrease (by 30 o 50 %) he proporional facor. Subsequenly ry increasing he inegraion ime by he same percenage. In any case, adop parameer seings recommended for sable sysems. Increase he superhea se poin and check ha he swings are reduced or disappear. Iniially se 3 C, hen gradually reduce he se poin, making sure he sysem does no sar swinging again and ha he uni emperaure reaches he conrol se poin. Acivae he MOP proecion by seing he hreshold o he required sauraed evaporaion emperaure (high evaporaion emperaure limi for he compressors) and seing he MOP inegraion ime o a value above 0 (recommended seconds). To make he proecion more reacive, decrease he MOP inegraion ime. Apply a sof sar echnique, acivaing he uiliies one a a ime or in small groups. If his is no possible, decrease he values of he MOP hresholds on all he uiliies.

42 PROBLEM CAUSE SOLUTI In he sar-up phase he low pressure proecion is The Valve opening a sar-up parameer is se oo low Check he calculaion in reference o he raio beween he raed cooling capaciy of he evaporaor and he capaciy of he valve; if necessary lower he value. acivaed (only for unis wih The driver in plan or LAN configuraion Check he plan / LAN connecions. Check ha he pco applicaion conneced o he compressor on board) does no sar conrol and he valve driver (where feaured) correcly manages he driver sar signal. Check ha he driver The uni swiches off due o low pressure during conrol (only for unis wih compressor on board) remains closed The driver in sand-alone configuraion does no sar conrol and he valve remains closed is NOT in sand-alone mode. Check he connecion of he digial inpu. Check ha when he conrol signal is sen ha he inpu is closed correcly. Check ha he driver is in sand-alone mode. LOP proecion disabled Se a LOP inegraion ime greaer han 0 s. LOP proecion ineffecive Solenoid blocked Insufficien refrigeran The valve is conneced incorrecly (roaes in reverse) and is open Saor broken or conneced incorrecly Make sure ha he LOP proecion hreshold is a he required sauraed evaporaion emperaure (beween he raed evaporaion emperaure of he uni and he corresponding emperaure a he calibraion of he low pressure swich) and decrease he value of he LOP inegraion ime. Check ha he solenoid opens correcly, check he elecrical connecions and he operaion of he relay. Check ha here are no bubbles in he sigh glass upsream of he expansion valve. Check ha he subcooling is suiable (greaer han 5 C); oherwise charge he circui. Check he movemen of he valve by placing i in manual conrol and closing or opening i compleely. One complee opening mus bring a decrease in he superhea and vice-versa. If he movemen is reversed, check he elecrical connecions. Disconnec he saor from he valve and he cable and measure he resisance of he windings using an ordinary eser. The resisance of boh should be around 36 ohms. Oherwise replace he saor. Finally, check he elecrical connecions of he cable o he driver (see paragraph 5.). Valve suck closed Use manual conrol afer sar-up o compleely open he valve. If he superhea remains high, check he elecrical connecions and/or replace he valve. LOP proecion disabled Se a LOP inegraion ime greaer han 0 s. LOP proecion ineffecive Make sure ha he LOP proecion hreshold is a he required sauraed evaporaion emperaure (beween he raed evaporaion emperaure of he uni and he corresponding emperaure a he calibraion of he low pressure swich) and decrease he value of he LOP inegraion ime. Solenoid blocked Insufficien refrigeran The valve is significanly undersized Saor broken or conneced incorrecly Valve suck closed The cabine does no reach Solenoid blocked he se emperaure, despie he value being opened o Insufficien refrigeran he maximum (for muliplexed cabines only) The valve is significanly undersized Saor broken or conneced incorrecly The cabine does no reach he se emperaure, and he posiion of he valve is always 0 (for muliplexed cabines only) Valve suck closed The driver in plan or LAN configuraion does no sar conrol and he valve remains closed The driver in sand-alone configuraion does no sar conrol and he valve remains closed Tab. 0.a Check ha he solenoid opens correcly, check he elecrical connecions and he operaion of he conrol relay. Check ha here are no bubbles of air in he liquid indicaor upsream of he expansion valve. Check ha he subcooling is suiable (greaer han 5 C); oherwise charge he circui. Replace he valve wih a larger equivalen. Disconnec he saor from he valve and he cable and measure he resisance of he windings using an ordinary eser. The resisance of boh should be around 36 ohms. Oherwise replace he saor. Finally, check he elecrical connecions of he cable o he driver. Use manual conrol afer sar-up o compleely open he valve. If he superhea remains high, check he elecrical connecions and/or replace he valve. Check ha he solenoid opens correcly, check he elecrical connecions and he operaion of he relay. Check ha here are no bubbles of air in he liquid indicaor upsream of he expansion valve. Check ha he subcooling is suiable (greaer han 5 C); oherwise charge he circui. Replace he valve wih a larger equivalen. Disconnec he saor from he valve and he cable and measure he resisance of he windings using an ordinary eser. The resisance of boh should be around 36 ohms. Oherwise replace he saor. Finally, check he elecrical connecions of he cable o he driver. Use manual conrol afer sar-up o compleely open he valve. If he superhea remains high, check he elecrical connecions and/or replace he valve. Check he plan/lan connecions. Check ha he pco applicaion conneced o he driver (where feaured) correcly manages he driver sar signal. Check ha he driver is NOT in sand-alone mode. Check he connecion of he digial inpu. Check ha when he conrol signal is sen ha he inpu is closed correcly. Check ha he driver is in sand-alone mode. 2

43 . TECHNICAL SPECIFICATIS Power supply 2 Vac (+0/-5%) 50/60 Hz o be proeced by an exernal 2 A ype T fuse. Use a dedicaed class 2 ransformer (max 00 VA). Lmax=5 m. 30 VA 22 Vdc+/-5%. (If he opional E00200/300 module is insalled), Lmax= 5 m reinforced; 6 mm in air, 8 mm on surface; 3750 V insulaion Power inpu Emergency power supply Insulaion beween relay oupu and oher oupus Moor connecion Digial inpu connecion Sensors (Lmax=0 m) S raiomeric pressure sensor (0 o 5 V): resoluion 0. % FS; measuremen error: 2% FS maximum; % ypical elecronic pressure sensor ( o 20 ma): resoluion 0.5 % FS; measuremen error: 8% FS maximum; 7% ypical combined raiomeric pressure sensor (0 o 5 V): resoluion 0. % FS; measuremen error: 2 % FS maximum; % ypical o 20 ma inpu (max 2 ma): resoluion 0.5 % FS; measuremen error: 8% FS maximum; 7% ypical S2 S3 S -wire shielded cable AW 8/22, Lmax 0 m Digial inpu o be acivaed from volage-free conac or ransisor o ND. Closing curren 5 ma; Lmax= 30 m low emperaure NTC: 0kΩ a 25 C, -50T90 C; measuremen error: C in he range -50T50 C; 3 C in he range +50T90 C high emperaure NTC: 50kΩ a 25 C, -0T50 C; measuremen error:.5 C in he range -20T5 C, C in he range ouside of -20T5 C combined NTC: 0kΩ a 25 C, -0T20 C; measuremen error: C in he range -0T50 C; 3 C in he range +50T90 C 0 o 0 V inpu (max 2 V): resoluion 0. % FS; measuremen error: 9% FS maximum; 8% ypical raiomeric pressure sensor (0 o 5 V): resoluion 0. % FS; measuremen error: 2% FS maximum; % ypical elecronic pressure sensor ( o 20 ma): resoluion 0.5 % FS; measuremen error: 8% FS maximum; 7% ypical elecronic pressure sensor ( o 20 ma) remoe. Maximum number of conrollers conneced=5 combined raiomeric pressure sensor (0 o 5 V): resoluion 0. % FS measuremen error: 2 % FS maximum; % ypical low emperaure NTC: 0kΩ a 25 C, -50T05 C; measuremen error: C in he range -50T50 C; 3 C in he range 50T90 C high emperaure NTC: 50kΩ a 25 C, -0T50 C; measuremen error:.5 C in he range -20T5 C C in he range ouside of -20T5 C combined NTC: 0kΩ a 25 C, -0T20 C; measuremen error C in he range -0T50 C; 3 C in he range +50T90 C Relay oupu normally open conac; 5 A, 250 Vac resisive load; 2 A, 250 Vac inducive load (PF=0.); Lmax=0 m Power o acive sensors (V REF ) programmable oupu: +5 Vdc+/-2% or 2 Vdc+/-0% RS85 serial connecion Lmax=000 m, shielded cable LAN connecion Lmax=30 m, shielded cable plan connecion Lmax=500 m, shielded cable Assembly DIN rail Connecors plug-in, cable size 0.5 o 2.5 mm 2 (2 o 20 AW) Dimensions LxHxW= 70x0x60 Operaing condiions -0T60 C; <90% rh non-condensing Sorage condiions -20T70 C, humidiy 90% rh non-condensing Index of proecor IP20 Environmenal polluion 2 (normal) Resisance o hea and fire Caegory D Immuniy agains volage surges Caegory Type of relay acion C microswiching Class of insulaion 2 Sofware class and srucure A Conformiy Elecrical safey: EN , EN 600- Elecromagneic compaibiliy: EN , EN , EN , EN ; EN , EN550-, EN550-2, EN Tab..a 3

44 2. APPENDIX: VPM (VISUAL PARAMETER MANAER) 2. Insallaion On he hp://ksa.carel.com websie, under he Parameric Conroller Sofware secion, selec Visual Parameer Manager. A window opens, allowing 3 files o be downloaded:. VPM_CD.zip: for burning o a CD; 2. Upgrade seup; 3. Full seup: he complee program. For firs insallaions, selec Full seup, for upgrades selec Upgrade seup. The program is insalled auomaically, by running seup.exe. Noe: if deciding o perform he complee insallaion (Full seup), firs uninsall any previous versions of VPM. 2.2 Programming (VPM) When opening he program, he user needs o choose he device being configured: EVD evoluion. The Home page hen opens, wih he choice o creae a new projec or open an exising projec. Choose new projec and ener he password, which when accessed he firs ime can be se by he user. 2. Fig. 2.c selec he model from he range and creae a new projec or choose an exising projec: selec Device model. A new projec can be creaed, making he changes and hen connecing laer on o ransfer he configuraion (LINE mode). Ener a he Service or Manufacurer level. selec Device model and ener he corresponding code Fig. 2.a Then he user can choose o:. direcly access o he lis of parameers for he EVD evoluion saved o EEPROM: selec LAN ; This is done in real ime (LINE mode), a he op righ se he nework address 98 and choose he guided recogniion procedure for he USB communicaion por. Ener a he Service or Manufacurer level. Fig. 2.d go o Configure device: he lis of parameers will be displayed, allowing he changes relaing o he applicaion o be made. Fig. 2.b Fig. 2.e A he end of he configuraion, o save he projec choose he following command, used o save he configuraion as a file wih he.hex exension. File -> Save parameer lis. To ransfer he parameers o he driver, choose he Wrie command. During he wrie procedure, he 2 LEDs on he converer will flash.

45 Fig. 2.f Noe: he program On-line help can be accessed by pressing F. 2.3 Copying he seup On he Configure device page, once he new projec has been creaed, o ransfer he lis of configuraion parameers o anoher driver: read he lis of parameers from he source driver wih he Read command; remove he connecor from he service serial por; connec he connecor o he service por on he desinaion driver; wrie he lis of parameers o he desinaion driver wih he Wrie command. Imporan: he parameers can only be copied beween conrollers wih he same code. Differen firmware versions may cause compaibiliy problems. 2. Seing he defaul parameers When he program opens: selec he model from he range and load he associaed lis of parameers; go o Configure device : he lis of parameers will be shown, wih he defaul seings. connec he connecor o he service serial por on he desinaion driver; during he wrie procedure, he LEDs on he converer will flash. The driver parameers driver will now have he defaul seings. 2.5 Updaing he driver and display firmware The driver and display firmware mus be updaed using he VPM program on a compuer and he USB/LAN converer, which is conneced o he device being programmed (see paragraph 2.5 for he connecion diagram). The firmware can be downloaded from hp://ksa.carel.com. See he VPM On-line help. 5