for central air handling with single- or two-speed fans

Transcription

1 3 204 EROYR Controller for central air handling with single- or two-speed fans RWI65.02 Compact unit providing control and supervisory functions, operating voltage C 24 V, signal voltage DC V. Use In ventilating and air conditioning plants with hot water heating coils or electric air heater batteries direct expansion cooler batteries or chilled water cooling coils recirculated air dampers or heat recovery (HR) equipment The RWI65.02 is used to: control - the room-supply air temperature or extract air-supply air temperature (cascade control) with adjustable minimum and maximum limitations - the room-supply air temperature or extract air-supply air temperature (cascade control) with room or extract air-dependent shifting minimum and maximum limitations (displacement ventilation) - the supply air temperature - the CO 2 /VOC content of the room air (demand controlled ventilation) - single- or two-speed fans - air coolers - chillers - HR equipment - hot water heating coils (with preheating) - electric air heater batteries (with fan overrun) - circulators in hot or chilled water circuits (load- or outside temperature-dependent) - air damper actuators (with recirculated startup circuit for modulating dampers) - regulating units in hot and chilled water circuits Siemens uilding Technologies CM2N3204E / Landis & Staefa Division 1/20

2 supervise - the air flow in air ducts - overloads of circulators, fans and chillers - overtemperatures of electric air heater batteries - risk of fire or smoke - risk of frost ccessories Name Type reference Remarks FLN communication insert ZI65.1 Not included in delivery Instructions (de, fr, it) R65.43 Included, if ordered Instructions (en, sv, fi, no) R65.44 Included, if ordered Instructions (nl, es, da) R65.45 Included, if ordered Ordering When ordering the controller, please give type reference RWI To ensure the unit will be supplied with the correct language version of the instructions (operating card 2, operating instructions and mounting instructions), please also indicate the type reference of the instructions required, e.g. R65.44 (for English, Swedish, Finnish, Norwegian). To order the communication insert, please give type reference ZI65.1. Controller and, if required, communication insert are packed separately and are also supplied as separate units. Equipment combinations Name Type reference Data sheet Temperature detector Q24, Q QM22..., QE , QE , 1792, 1791 QD22..., QC22, Q , 1811, 1722 QF63.2, QF CO 2 /VOC sensor QP Remote setting unit Q FZ21.21, FZ , 3471 Signal source RVL55, RZF , 3472 RZM61.400, PTM1.2Y , 8161 ctuator SQ , 4574, 4685, 4686 Technical design Control utomatic detector identification (SD logic), including type of detector (active or passive). utomatic activation of optimum controller configuration through CC logic which, via SC, identifies the intended use of the control function. This means that the control will be optimally matched to the plant. P-band and integral action time (TN) are separately adjustable, so that P-control (with integral action time TN = 0) or PI control can be selected. The controller is supplied as a PI controller. The setpoints of heating and cooling can be adjusted separately. Overlapping of heating / cooling sequences is not possible. For the control of mixed air dampers or HR equipment, both the operating action and the operating mode can be selected. The actual values of the various outputs are permanently displayed. CM2N3204E / Siemens uilding Technologies 2/20 Landis & Staefa Division

3 Temperature control Room-supply air temperature or extract air-supply air temperature cascade control. The connection of room or extract air temperature detectors (terminal 1) and supply air temperature detectors (terminal 2) automatically activates cascade control. With cascade control, the room or extract air temperature is maintained at a constant level. The room or extract air temperature is the controlled variable whose setpoint can be read off and adjusted on the controller s second operating level. The supply air temperature is shifted in function of the deviation of the room / extract air temperature from the setpoint of room / extract air temperature. The extent of setpoint shift is calculated via the cascade authority (adjustable from 0 to 20). - Room-supply air temperature or extract air-supply air temperature cascade control with fixed supply air limitations (mode of control 1). If the supply air temperature falls below the limit set on the controller, the inbuilt minimum limitation will take command of control to prevent the supply air temperature from falling further. The set limit is maintained at a constant level. The same considerations apply to maximum limitation. - Room-supply air temperature or extract air-supply air temperature cascade control with shifting supply air limitations (displacement ventilation) (mode of control 2). The shifting limits of the supply air temperature are calculated in function of the actual room or extract air temperature, whereby the supply air temperature must remain within the boundaries dictated by the selected values of minimum and maximum limitation. Supply air temperature control (mode of control 3). If a supply air temperature detector (terminal 2) is connected, supply air temperature control is automatically activated. With this mode of control, the supply air temperature is maintained at a constant level. The required mode of control can be selected. Control sequences and operating action The RWI65.02 is a sequence controller with three modulating outputs (Y10 = heating, Y20 = cooling, Y30 = HR) and one switching output (Q13/Q24 = cooling). It allows control sequences using both operating actions, for dampers and HR equipment. oth operating action and control sequences are adjustable (DIL switches no. 4 to 7). Function diagram Y [ % ] 100 Y10/Y30 Y30/Y10 Y20 S (DtPnt 32) Y30 min (DtPnt 6) SD (DtPnt 33) 3204D03E T X P1 X P3 X P2 T n1 T n3 w h wc T n2 Setpoint compensation The basis used for compensation are the setpoints selected on the controller. These basic setpoints can be shifted as follows: compensation of controller setpoint in function of the outside temperature (terminal 4); with this function, summer/winter compensation is integrated in the controller; the compensation characteristic is adjustable compensation by means of an active or passive setting unit, either as an absolute setpoint or in the form of setpoint shifting via signal input «Z» compensation across the entire setpoint range by a Landis & Staefa building automation system via the FLN bus and FLN communication insert ZI65.1 Siemens uilding Technologies CM2N3204E / Landis & Staefa Division 3/20

4 Maximum Economy Changeover (MECH) This function is intended to make optimum use of the cooling energy supplied to the plant. ased on the measured differential of outside and room or extract air temperature, the plant is operated either with reduced amounts of outside air or with heat recovery. In that case, the controller overrides normal control and acts on position signal output Y30 to position it to 100 % with HR (DC 10 V) or to Y30 min.. This function can be selected (DIL switch no. 3). Mixing dampers HR equipment Y30 [V] Y30 [V] Y30 [V] Y30 [V] < > 1 Y30 min 0 T Y30 min 0 2 K 4 > 1 4 < T T 2 K D02E T Unoccupied heating and cooling mode During non-occupancy periods, «Unoccupied heating mode» or «Unoccupied cooling mode» is automatically used, provided enabling took place (can be set for each function) and the respective preconditions are met. The factory-set minimum operating time is 30 min (adjustable from 0 to 12 h). «Unoccupied heating mode» becomes active when the set supporting level for heating (adjustable from 0 to 30 C) is reached. Heating is provided until the room or extract air temperature exceeds the supporting level by 1 K. In that case, the fans run at speed I or II (depending on the preselected speed). Outputs Y20 and Y30 with operating action «\» are disabled (0 %). «Unoccupied cooling mode» becomes active when the set supporting level for cooling (adjustable from 20 to 50 C) is reached. Cooling is provided until the room or extract air temperature falls below the supporting level by 1 K. In that case, the fans run at speed I or II (depending on the preselected speed). Outputs Y10 and Y30 with operating action «\» are disabled (0 %). Night purging During non-occupancy periods in the summer, this function is automatically activated if - the function has been enabled - both the room and the outside temperature exceed their adjusted limits, and - the difference between room and outside temperature exceeds the value set. If the function is activated, cool outside air is drawn into the building. In that case, the fans run at speed I or II (depending on the preselected speed). Outputs Y10, Y20 and Y30 with operating action «\» are disabled (0 %). The factory-set minimum operating time is 30 min. It is adjustable (from 0 min to 12 h). CM2N3204E / Siemens uilding Technologies 4/20 Landis & Staefa Division

5 Function diagram T R/ [ C] 26 Night purging active Room temperature limit (DtPnt 12) Delta (DtPnt 14) T T R t Nmin (DtPnt 15) 3204D04E Outside temperature limit 12 (DtPnt 13) End of occupancy time eginnning of occupancy time t Demand controlled ventilation nti-icing protection for HR equipment Frost protection (on the water or air side) This function enhances comfort and optimizes energy consumption in rooms with varying occupancy levels. n integral CO 2 /VOC controller reduces the CO 2 or CO 2 /VOC concentrations in the space. The P-band, the switching values for the fan speeds and the design value at full occupancy are adjustable; the switching differential is 160 ppm. Using the detectors connected to signal inputs Z, 1 and 2, the controller acquires the actual temperature and CO 2 values. If the CO 2 or CO 2 /VOC concentrations in the space exceed the switching value of fan speed I + ½SD, the temperature controller is activated and the fan will run at speed I. The temperature controller maintains the preselected setpoint (Comfort or Economy). If the CO 2 or CO 2 /VOC concentrations increase further, fan speed II will be activated. etween this function and the step output of the time switch program, maximum value selection takes place, with both functions having the same priority. In the case of systems with recirculated air dampers, the damper control function is activated also. Here, Y30 minimum limitation, recirculated air startup mode and the frost protection controller with a higher priority act on the Y30 control signal. Integral limit controller for HR equipment such as thermal wheel type heat exchangers, plate heat exchangers, and glycol circuits: setpoint, P-band and integral action time are adjustable. The limit controller is active only when the plant is in operation (fan speed I or II). Using the detectors connected to signal inputs Z, 1 and 2, the controller acquires the actual temperatures. The manipulated variables delivered by the integral limit and temperature controllers are compared with one another with the help of a priority selector, which selects the manipulated variable with the smallest value (minimum selection). This manipulated variable reduces the output of the HR equipment. Since a certain amount of heat is not now available from the HR equipment, the balance is delivered by a downstream air heater battery (terminal Y10). For ventilating and air conditioning plants using hot water heating coils: all values for frost protection (response temperatures, setpoints, P-bands, and integral action times) are preset and can be changed. The temperature is acquired either in the water circuit or at the air outlet of the hot water heating coil. The protective actions are the following: continuous opening of the heating valve, activation of the hot water circulator deactivation of the fan or closing of the air dampers maintaining the temperature when the fans are deactivated (only on the water side, setpoint «Standby controller») fault status signal when there is risk of frost Use of the following detectors is a prerequisite: QE22... or QD22 for frost protection on the water side. QF63.2, QF63.6 for frost protection on the air side. Siemens uilding Technologies CM2N3204E / Landis & Staefa Division 5/20

6 Function diagrams Plant ON Plant OFF On the air and the water side On the air and the water side On the air side Y [ % ] Y [ % ] Y [ % ] Y10(P) Y10(PI) Y10(P) 3204D05E 0 T 0 w Q 0 w X w T Pd wn w w (DtPnt 16) (DtPnt 17) (DtPnt 16) (DtPnt 18) 2K X Pn 2 K ½ X t Pd Pmin t Pmin t Pmin (DtPnt 48) (DtPnt 48) (DtPnt 48) Q33/Q34 Q33/Q44 Q13/Q14 Q13/Q14 Q13/Q14 Legend T Temperature in the hot water heating coil s circuit, or air temperature just after the heating coil Q Load Y Manipulated variable Y10 Control command «Heating valve» Q13/Q14 Relay output «Hot water circulator or electric air heater battery» Q33/Q34 Relay output «Fan speed I» Q33/Q44 Relay output «Fan speed II» X pd P-band «Frost protection controller» (data point 18) X pn P-band «Standby controller» (data point 19) w w Frost alarm value (data point 16) w wn Setpoint «Standby controller» (data point 17) t Pmin Min. running time of hot water circulator (data point 48) Startup mode Control Switching the plant via control inputs E7 and E8 Time switch The startup mode is only used with the heating sequence Y30 with operating action «/» (plants using recirculated air dampers). On plant startup, supply air temperature control or one of the two cascade control modes is activated. The period of time for startup mode can be set from 0 s to 60 min. During this time, the cooling sequence (Y20) is disabled and the hot water circulator (Y10) is activated. The plant operates with 100 % recirculated air (prepurging). In the case of plants that use outside detectors, this function becomes active only at outside temperatures below 15 C. In the case of plant startups initiated by «Unoccupied heating mode», «Unoccupied cooling mode» or «Night purging», this function remains inactive. Plant operation can be controlled from the following locations: manual switch (operating level 1: buttons 1 to 4), communication (FLN bus), «External switch» (E7, E8), «Extended operation» (E7, E8), time switch program, «Demand controlled ventilation», «Unoccupied heating mode», «Unoccupied cooling mode», night purging, fault, commissioning. From an external switch: the functions of the manual switch on the RWI65.02 (operating level 1, buttons 1 to 4) can be provided by a 4-step rotary switch with two levels. y the function «Extended operation»: when a pulse (of at least 3 s) is fed to E7, the plant will be operated at fan speed I; when a pulse (of at least 3 s) is fed to E8, the plant will be operated at fan speed II. Time switch program: the time switch integrated in the RWI65.02 facilitates the setting of four switching times per day; each switching time can be assigned a fan switch position (off, speed I, or speed II) and a setpoint pair (Economy and Comfort); the settings are made on operating level 3. Summer-/wintertime changeover CM2N3204E / Siemens uilding Technologies 6/20 Landis & Staefa Division

7 Preheating time This function prevents freeze-ups of the hot water heating coil at low outside temperatures (especially in plants that use on/off dampers). The period of time preheating is active can be adjusted from 0 s to 10 min. When the plant is switched on, first, only the hot water circulator (Q13/ Q14) is activated while the hot water valve (Y10) is fully open. Disabling of fan speed II at low outside temperatures To protect the plant, fan speed II is disabled when outside temperature are very low. t what outside temperature this function is activated depends on the value set (adjustable from 50 C to +150 C). To prevent the controlled system from oscillating at greatly varying outside temperatures, the RWI65.02 operates with a fixed hysteresis of 2 Kelvin. Fixed preset damper position This function is used in connection with outside air handling to save energy (predominently in rooms with low occupancy levels). The damper sequence (Y30) with operating action «/» is not implemented as a control sequence. During plant operation, the damper is preset to a fixed position. The fixed value of the manipulated variable for the air dampers is adjustable from 0 to 100 % (Y30 minimum limitation). Periodic pump run (pump kick) For the hot water pump (DIL switch no. 8 must be in position «Hot water heating coil»). To avoid damage during plant off times, there are three setting choices available: - the pump is permanently activated; the pump is activated for 30 s at 24-hour intervals after the last operation, or - the pump runs continuously when the outside temperature is below 5 C; the minimum pump running time (adjustable from 0 s to 30 min) is maintained - the pump is periodically activated, that is, the pump is activated for 30 s after the last operation according to the selected time (adjustable from 5 min to 24 h) For the chilled water pump. To avoid damage during plant off times, it is possible to select periodic pump run. If this function is enabled (selectable), the pump will be activated for 30 s every afternoon at Forced runup and rundown time for fans Forced runup. The fan is always started via the first speed. If the second speed is selected right from the start, the first speed is first activated. Switching to the second speed takes place only when the set time has elapsed (adjustable from 0 to 5 min). Rundown time. When switching down from the second to the first speed, the RWI65.02 deactivates the second speed, and the first speed is activated only when the preset time has elapsed (adjustable from 0 s to 5 min). Supervision In plants that use hot water heating coils: - continuous checkback signals on the operational status of the plant and on the status of the hot water circulator, based on the signals received from supervisory elements such as flow switch and overload protection - continuous supervision of risk of frost - switching on and off depending on the selected alarm priority ( or «b») In plants that use electric heater batteries: - continuous checkback signals on the operational status of the plant and, especially, on that of the electric heater battery, based on the signals received from supervisory elements such as flow switch, overload and overtemperature protection - switching on and off depending on the selected alarm priority ( or «b») Siemens uilding Technologies CM2N3204E / Landis & Staefa Division 7/20

8 In plants that use chilled water cooling coils/chillers: - continuous checkback signals on the operational status of the plant and on the status of the chilled water circulator or chiller, based on the signals received from supervisory elements such as flow switch and overload protection - switching on and off depending on the selected alarm priority ( or «b») Fault status signals and signalling The RWI65.02 is able to acquire and handle seven fault status signals from plant elements and statuses. The faults are indicated on the two lines at the bottom (lines 9 and 10) of the display when the front door is closed p 9 E2 E4 E6! I,II 10 E3 E5 E1 9 0 b Z Supervision of risk of frost (signal input 9) Display: 0 = normal, or «b» = frost alarm 2 Supervision of air flow (signal input E2) Display: 0 = normal, 1 = start phase, or «b» = faulty flow 3 Overload of chiller or chilled water circulator (signal input E4) Display: 0 = Q13 / Q24 cooling deactivated, 1 = Q13 / Q24 cooling activated, or «b» = cooling at fault 4 Freely available, e.g. for filter supervision (signal input E6) Display: 0 = normal, 1 = start phase, or «b» = fault at E6 5 Overload / overtemperature at hot water circulator or electric heater battery (signal input E3) Display: 0 = Q13/Q14 heating deactivated, 1 = Q13/Q14 heating activated, or «b» = pump or electric heater battery at fault 6 Overload of fan (signal input E5) Display: 0 = Q33 / Q34 / Q44 fans deactivated, 1 = Q33 / Q34 fan speed I activated, 2 = Q33/Q44 fan speed II activated, or «b» = fan at fault 7 Supervision of fire/smoke (signal input E1) Display: 0 = normal, or «b» = fire/smoke alarm Depending on the priority, fault status signals are indicated by a flashing or «b» in the display and by a flashing red LED located in the acknowledge button on the unit front. Depending on the priority coding of contact output F91 ( and «b» or or «b»), the fault status signal can also be passed on to F91 as a common fault status signal. For each status input, the priority of the fault status signal ( or «b») can be selected. Each of the status inputs E1 through E6 can be matched to the type of contact of the respective signal element (N.O. or N.C. contact). For status inputs E2 and E6, it is also possible to choose alarm delays to prevent false alarms. cknowledging the fault status signal When a fault is indicated, it can be acknowledged with the acknowledge button located on the unit front. In that case, the priority indication in the display and the red LED in the button change from flash light to steady light. The indications extinguish when the fault status signal is no longer present at the status input, belongs to priority «b», and there are no other fault status signals present. If it is a fault status signal of priority, the steady light is maintained as long as a fault status signal of that priority is present. If there is no more fault status signal present, the alarm status can be cleared by pressing the acknowledge button again. For the effects of the fault status signals at the outputs of the RWI65.02, refer to the function flow diagrams on the last page of this data sheet. CM2N3204E / Siemens uilding Technologies 8/20 Landis & Staefa Division

9 Mechanical design The controller consists of controller insert and base. The controller insert accommodates all operating elements and the electronic circuits. It is secured to the base by two screws which are designed such that they push the insert away from the base when loosened. n EEPROM stores all setting values. In the event of a power failure, the setting values are thus retained for an unlimited period of time. The reserve for the weekly time switch (typically 48 hours) is contained in the controller insert. For this reason, the insert can be removed from its base without affecting the actual time settings. The base is made of plastic and is designed for both wall and flush panel mounting. In the case of flush panel mounting, the controller is secured by a clamp. The base carries four terminal blocks and a terminal strip for establishing the electrical connections with the controller insert. Operation The RWI65.02 is operated from four operating levels: information level, setting level, time switch program level, and commissioning level. Information level (operating level 1) When the front door is closed, the display window displays the following information: selection of operation (black pointer), manipulated variables, temperatures, weekday, time, and status information. The following settings can be made (if not disabled): operating mode (utomatic, fan speed II, fan speed I, Standby), time of day, weekday, and summer- or wintertime. Front door closed EROYR TM RWI65.02 Y I,II Y 10 Y 20 T T I,II T h ! 9 E3 p I,II E2 E5 E4 E1 E b Z Legend 1 utton for automatic plant operation ( ) 2 utton for plant operation using fan speed II 3 utton for plant operation using fan speed I 4 utton for Standby mode (incl. frost protection) 5 lack pointer, indicates plant operation selected with the manual switch (buttons 1 to 4) 6 utton for setting the current weekday (Mo = 1... Su = 7) 7 utton for setting the actual time 8 lack pointer, indicates that the clock is set to summertime (no indication = wintertime) 9 Operating card 1 (for operating level 1) 10 LED (green) for indication of the plant s operational status (fans ON = LED lit, OFF = dark) 11 Universal button with LED (red) for indication, acknowledgement and resetting of fault statuses 12 uttons for adjustments 13 Key hole for opening the front door (key enclosed) Siemens uilding Technologies CM2N3204E / Landis & Staefa Division 9/20

10 Setting level (operating level 2) and time switch program level (operating level 3) fter opening the front door, operating card 2 can be accessed: the 10 lines of the front page (operating level 2) show the setting and display choices required for operation. With the exception of lines 5 and 8, the values can be readjusted when operating level 2 is active. Line 5 displays the actual setpoint of heating (black pointer). fter pressing button 5, the actual setpoint of cooling (no black pointer) is displayed. When pressing both buttons at the top (lines 1 and 2) simultaneously for two seconds, the time switch program level appears. The relevant text is on the reverse of operating card 2. Closing the front door automatically reactivates operating level 1. Front door open Set point Comfort Economy ctual EROYR Min. supply air temp. Max. supply air temp. Running mode Data point number Data point value TM RWI65.02 Heating Cooling Heating Cooling Heating Cooling Z03E Legend 1 Front door 2 Space for operating card 1 and Operating Instructions with normal operation data point list and description of operating mode display 1 through 10 (operating level 2, line 8) 3 Cover with operating card 2 (front: operating level 2, rear: operating level 3) 4 Display window with ten lines 5 Function buttons to change the setpoints Configuring the unit with DIL switches Front door opened, cover removed The DIL switches for the configuration of the RWI65.02 are located behind the cover. To view or change settings, the front door must be opened and the cover removed. EROYR TM RWI Y10 Y10 6 Y30 Y30 5 Y30 Y10 Y10 Y Y30 Y30 1 Test Run Z04 The controller is supplied with the DIL switches set to OFF. The switch positions have the following meaning: CM2N3204E / Siemens uilding Technologies 10/20 Landis & Staefa Division

11 DIL no. ON position OFF position 8 Electric heater battery 1) Hot water heating coil 2) 7 Operating action Y10 «/» Operating action Y10 «\» 6 Output Y30 disabled Output Y30 enabled 5 Comfort (first Y10, then Y30) Economy (first Y30, then Y10) 4 Operating action Y30 for mixing dampers Operating action Y30 for HR systems 3 Without MECH function With MECH function 2 Not used Not used 1 Test function for production Normal DDC operation (cannot be used) 1) Fan overrun is automatically activated 2) Frost protection controller is automatically activated FLN communication insert ZI65.1 Recyclability, environmental protection, operating safety Using the ZI65.1 insert, the RWI65.02 is able to communicate with an active bus user (master, such as the VISONIK uilding Process Station, PS) via the Floor Level Network (FLN) bus. The insert contains the electronic circuits required for communication. The communication insert slides into its compartment in grooves. The compartment becomes accessible after opening the front door and removing the cover. Fitting the FLN communication insert in the RWI65.02 requires no re-commissioning but only setting of the address, which is needed for the exchange of data in the network. For more information, please refer to data sheet CM2N3206E, «FLN Communication Insert». 80 % of the plastic materials used can be recycled. The controller has a super capacitor in place of NiCd batteries which need to be replaced every two years - to enhance operating safety and environmental protection. Engineering notes The operating voltage required for the controller is C 24 V. The transformer used must be suitable for safety extra low voltage (SELV), 100 % duty, and must have separate windings. Fuses, switches, wiring and earthing must be in compliance with the local safety regulations. The limitations cannot be used as safety functions. These always require separate safety devices. ll important variables that are required for commissioning - if known at the time of planning - are to be shown on the plant documentation (connection diagram, etc.). For additional information on the RWI65.02, please refer to the Reference Manual, ordering no. CM2Z3204E. It contains application examples, detailed function descriptions, a data point list for commissioning, notes on safety, and so on. Fitting notes The controller is designed for wall mounting (in an open space or inside a control panel) or flush panel mounting (control panel front, console, etc.). The permissible ambient conditions must be observed. First, the base is to be mounted and wired up. The cables inside the base must be accommodated such that the insert can be easily fitted. Secure fixing screws only after commissioning. The controller is supplied complete with mounting instructions. Commissioning notes For commissioning, the Reference Manual, ordering no. CM2Z3204E, is required. When commissioning the plant, all functions of the controller and of the communication insert (if present) and the wiring of the connected units must be checked. Siemens uilding Technologies CM2N3204E / Landis & Staefa Division 11/20

12 Settings Recommendation The controller is supplied with all control functions and parameters factory-set. Where required, the RWI65.02 needs to be configured for various logic functions, such as electric heating, where certain safety regulations must be observed. The configuration can be changed with the help of the built-in DIL switches. Values can be changed with the function buttons on the respective operating levels. ny change is immediately saved when the acknowledge button is pressed (when the display stops flashing). Note changed values on the reverse of the operating instructions (folded sheet). Technical data Operating voltage C 24 V ±20 % Safety extra low voltage (SELV) to EN External transformer (100 % duty) to EN Fusing of supply line (external) 10 max. Frequency 50 Hz or 60 Hz Power consumption 10 V Insulation class III to EN Degree of protection When mounted on a flat wall IP 40 to EN When mounted in a control panel front Casing IP 40 to EN ase IP 20 to EN Digital inputs E1...E8 Voltage at open input DC V Logic 0 <DC 1 V Logic 1 >DC 5 V Current at «Logic 0» 9 m Perm. line lengths with copper 1.5 mm m max. nalog inputs 1, 2, 4, 9, Z Detectors Passive L-Ni1000 Ω ctive DC V Measuring range C Perm. line lengths with copper 1.5 mm m max. nalog outputs Y10, Y20, Y30 Output voltage DC V Output current ±1 m max. Max. load sustained short-circuit Relay outputs Q13/Q14/Q24, Q33/Q34/Q44 Switching capacity, voltage C 19 V min., 265 V max. Switching capacity, current at C 19 V 20 m min., 4 / 3 1) max. Switching capacity, current at C 265 V 5 m min., 4 / 3 1) max. 1) at cos ϕ = 0.6 Relay output F91 Output voltage C 24 V Switching capacity, current 20 m min., 4 / 3 1) max. Communication interface RS-485 mbient conditions Operation to IEC Climatic conditions class 3K5 Temperature C Humidity (non-condensing) < 85 % r.h. Transport to IEC Climatic conditions class 2K3 Temperature C Humidity < 95 % r.h. Mechanical conditions class 2M2 CM2N3204E / Siemens uilding Technologies 12/20 Landis & Staefa Division

13 Electromagnetic compatibility Emissions to EN Immunity to EN conformance to EMC directive 89/336/EW Low voltage directive 73/23/EW Product standards utomatic electric controls for household and similar uses EN Miscellaneous Reserve in the event of a power failure 48 h (typically) Connection terminals for wires 2 x 1.5 mm 2 or 1 x 2.5 mm 2 Weight (incl. packing) 1.17 kg Connection diagram M Z E E1 E2 E3 E4 E5 E6 E7 E8 Y10 Y20 Y30 ZI65.1 UP UN F91 Q13 Q33 Q14 Q24 Q34 Q Operating voltage, C 24 V (system potential) Operating voltage (system neutral) M Measuring neutral 1 Measuring signal from the room or extract air temperature detector (L-Ni1000 Ω / DC V) 2 Measuring signal from the supply air temperature detector (L-Ni1000 Ω / DC V) 4 Measuring signal from the outside detector (L-Ni1000 Ω / DC V) 9 Measuring signal from the frost detector (L-Ni1000 Ω / DC V) Z Measuring signal from peripheral devices (L-Ni1000 Ω / DC V) Y10 Control signal output for heating (DC V) Y20 Control signal output for cooling 1 ) (DC V) Y30 Control signal output for heat recovery (DC V) E Signal voltage neutral for digital inputs E1 through E8 E1 Digital status input «Fire/smoke» E2 Digital status input «ir flow signal» E3 Digital status input «Overload hot water circulator or overtemperature electric heater battery» E4 Digital status input «Overload of chiller or chilled water circulator» E5 Digital status input «Overload fan» E6 Digital status input, not used E7 Digital input «Control input 1» E8 Digital input «Closed input 2» F91 Common fault status output (C 24 V) with priority and «b» or or «b» (can be coded for this output) Q13 / Q14 Potential-free relay contact output, to switch circulator or electric heater battery Q13 / Q24 Potential-free relay contact output for compressor, dx-cooling or chilled water circulator 1) Q33 / Q34 Q33 / Q44 UP, UN Potential-free relay contact output, to switch fan speed I Potential-free relay contact output, to switch fan speed II Connections (2...3) for communication Note: L-Ni1000 Ω detectors = L & S standard Control signal outputs Y20 and Q13 / Q24 are available at the same time Siemens uilding Technologies CM2N3204E / Landis & Staefa Division 13/20

14 Wiring diagrams Connections on the measuring side Wiring diagram 1: measuring part for temperature with passive main and auxiliary detectors SP C 24 V M M M M M 2 M 4 M 9 M SN Wiring diagram 2: measuring part for temperature with active frost detector and with outside temperature acquisition via RVL55 SP C 24 V M 1 M 2 U4 M N2 M 5 1 M 2 M 4 M 9 M SN Wiring diagram 3: measuring part with active remote setting unit SP C 24 V Y9 R1 Z SN Wiring diagram 4: measuring part with passive remote setting unit SP C 24 V 1 R M Z M R SN Wiring diagram 5: measuring part with extract air temperature detector for limit control (anti-icing protection with HR) SP C 24 V Z M M SN CM2N3204E / Siemens uilding Technologies 14/20 Landis & Staefa Division

15 I II Wiring diagram 6: measuring part with CO 2 /VOC sensor for demand controlled ventilation SP C 24 V CO2/VOC CO2 M 1 2 M 7 1 Z M SN Legend for wiring diagrams 1 to 6 N R1 R2 Controller RWI65.02 RVL55 with plug-in module ZY55.60 Room or extract air temperature detector Q24/QM22... Supply air temperature detector QM22... Outside detector QM22... / QC22 Frost detector QD22 / QE21.6 Frost detector QF63.2 / QF63.6 Extract air temperature detector QM22... CO 2 / VOC sensor QP62... Remote setting unit FZ61.11 Room unit Q26 or setting unit FZ21.21 Connections on the control side Wiring diagram 7: control part with regulating units for heating, cooling and HR SP C 24 V Y10 Y20 Y30 SN Y Y Y Y1 Y2 Y Y1 Y2 Y3 Controller RWI65.02 Regulating unit for heating Regulating unit for cooling Regulating unit for HR/recirculated air dampers Connections on the control and supervision side Wiring diagram 8: L SP T p F1 F2 F3 F4 uto 0 S E E1 E2 E3 E4 E5 E6 E7 E8 Q13 Q33 C 230 V C 24 V F91 Q14 Q24 Q34 Q44 F1 F2 F3 F4 K4 K3 SN N F1...F4 H1 K1 K2 K3 K4 H1 K1 K2 K3 K4 Controller RWI65.02 Overload relay contact uxiliary unit for common fault signal Motor contactor for hot water pump or contactor for electric heater battery Motor contactor for chilled water circulator or chiller Motor contactor for fan speed I Motor contactor for fan speed II Siemens uilding Technologies CM2N3204E / Landis & Staefa Division 15/20

16 Data point list for normal operation Data point values and measured values can be called up under certain data point numbers. The controller is supplied with all values factory-set (bold printing). These factorysettings are selected such that the controller is suited for the majority of plants. Each of them can be changed, if required. The factory-set data are stored in non-volatile memory. No. Description Range Factorysetting Current measured values Limitation manipulated variable Presettings Unoccupied heating/cooling mode Night purging Setpoints frost protection / standby controller Parameters frost protection / standby controller Displacement ventilation 1 9 Frost temperature C (Read value) 2 Z Input variable C/ (Read value) ppm 3 F91 Common fault relay OFF/On (Read value) 4 E7 Control input 1 1) OFF/On (Read value) 5 E8 Control input 2 1) OFF/On (Read value) 6 Y30 Minimum limitation % 0 % 7 Fan speed 1/2 1 8 Setpoint pair (Comfort/Economy) Co/Ec Ec 9 Room temperature limit heating C 15 C 10 Room temperature limit cooling C 30 C 11 Minimum operating time hh.mm hh.mm 12 Room temperature limit C 22 C 13 Outside temperature limit C 12 C 14 Delta K 5 K 15 Minimum operating time hh.mm hh.mm 16 Frost alarm value C 5 C 17 Standby controller C 25 C 18 P-band frost protection controller K 5 K 19 P-band standby controller K 7 K 20 TN standby controller mm.ss mm.ss 21 Disabling of fan speed 2 acc. to outside temperature 4 14) C 15 C 22 Delta for heating K 4 K 23 Delta for cooling K 3 K Control parameters room temperature controller Control parameters supply air temperature controller Switching points compressor Summer compensation Winter compensation larm priorities 24 KE room (cascade authority) TN mm.ss mm.ss 26 P-band heating K 20 K 27 TN heating 2) mm.ss mm.ss 28 P-band heat recovery K 15 K 29 TN heat recovery 2) mm.ss mm.ss 30 P-band cooling K 15 K 31 TN cooling 2) mm.ss mm.ss 32 Switching interval S % of Y20 20 % 33 Switching differential SD % of Y20 10 % 34 Starting point C 25 C 35 End point C 30 C 36 Delta K 2 K 37 Starting point C 5 C 38 End point C 20 C 39 Delta K 1 K 40 E1 Fire/smoke / b 41 E2 ir flow supervision / b 42 E3 Overload pump/electric / b 43 E4 Overload chiller / b 44 E5 Overload fan / b 45 E6 UX, freely available / b 46 9 Frost alarm / b CM2N3204E / Siemens uilding Technologies 16/20 Landis & Staefa Division

17 Time elements HR anti-icing protection Demand controlled ventilation Miscellaneous 47 Fan overrun time 3) mm.ss mm.ss 48 Min. heating circulator running time 11) mm.ss mm.ss 49 Heating circulator kick interval 10) hh.mm/ uto/cont uto 50 larm delay air flow start 12) mm.ss mm.ss 51 larm delay air flow operation 12) mm.ss mm.ss 52 larm delay UX 12) mm.ss mm.ss 53 E7, E8 control input on time 4) hh.mm hh.mm 54 Startup time (damper fully closed) 5) mm.ss mm.ss 55 Preheating time mm.ss mm.ss 56 Power up start delay 13) mm.ss mm.ss 57 Setpoint C 1 C 58 P-and K 10 K 59 TN 2) mm.ss mm.ss 60 Switching value fan speed I ppm 700 ppm 61 Switching value fan speed II ppm 1200 ppm 62 Design value full occupancy ppm 1000 ppm 63 P-band ppm 400 ppm 64 Hours run counter 9) x 10 h (Read value) 65 Operation lock 6) OFF/On OFF 66 RWI software version 7) "00.00" (Read value) 67 Communication address 8) ----, Explanations 1) Indicates whether input E7, E8 is open or closed (control signal «yes» or «no») 2) Integral action time (T n ) = 0 s means: P-control for the respective control sequence Integral action time (T n ) > 0 s means: PI-control for the respective control sequence 3) Only when the RWI65.02 is configured for an electric air heater battery. During the overrun time, the fan runs at speed I. On completion of the selected overrun time, the fans will be switched off and the outside air dampers closed 4) Period of time during which the plant - after arrival of a pulse (> 2 s) at E7 or E8 - shall operate. When set to 0 min, the plant is switched on or off the moment the signal arrives at E7 and E8 (external time switch) (only in utomatic mode and when the internal time switch has switched off or is permanently deactivated) 5) Period of time during which the plant may operate with 100 % recirculated air (after plant startup) 6) If operating level 1 is locked (data point value = On), it is not possible to change any values for two minutes after closing the front door (exception: summer-/wintertime changeover). Enabling by reopening the front door 7) The display shows the actual program number (software version) 8) Must be set if the controller is equipped with a communication module. If no communication module is used, the value set has no effect on the RWI ) Counted are the number of fan operating hours. The reading can be reset either to zero or to the former value. Proceed as follows: 1. Press function button 10 (line 10) 2. Press setting button if the meter shall be reset to zero, or setting button «+» if the meter shall be reset to the former value 3. To confirm the resetting, press function button 10 again. 10) ctive only if coded for hot water heating coil! ð Circulator kick interval is disabled ð Circulator kick occurs for 30 s according to the selected interval time uto ð Circulator is activated for 30 s every 24 h, or runs continuously when the outside temperature is < 5 C; the minimum circulator running time (data point 48) is maintained Cont ð Circulator continuously on 11) The setting of a minimum running time avoids too frequent activation / deactivation of the circulator 12) To avoid unnecessary faulty alarms, the fault status signal can be delayed 13) fter a power failure and subsequent power restoration, it may be necessary to bring the controller back into operation with a certain delay. This is to make certain that after a power failure, all plant elements connected to the same mains network will not be switched on at the same time (peak loads) 14) To protect the plant, the second fan speed is disabled at very low outside temperatures. In that case, only the first fan speed will be enabled. To avoid unnecessary fan speed changes when outside temperatures greatly vary, a hysteresis of 2 K is used Siemens uilding Technologies CM2N3204E / Landis & Staefa Division 17/20

18 Function flow diagrams for fault status signals Incoming fault status signals I/O Explanation Heat source Fault reaction Q13 Q14 Q13 Q24 Q33 Q34 Q33 Q44 Y10 Y20 Y30 reen LED Red LED E1 Fire/ smoke E2 Faulty flow E3 Overcurrent hot water circulator Overload el-heater E4 Overload chiller/ chilled water circulator E5 Overload fan E6 UX 9 Risk of frost Dark Lit Flashing Dark if Y10 0 % Off On Off (delayed) Off if Y10 0 % On if Y10 0 % 3204Z05E CM2N3204E / Siemens uilding Technologies 18/20 Landis & Staefa Division

19 cknowledged present fault status signals I/O Explanation Heat Fault reaction Q13 Q14 Q13 Q24 Q33 Q34 Q33 Q44 Y10 Y20 Y30 reen LED Red LED E1 Fire/ smoke E2 Faulty flow E3 Overcurrent hot water circulator Overload el-heater E4 Overload chiller/ chilled water circulator E5 Overload fan E6 UX 9 Risk of frost Dark Lit Flashing Dark if (Y10 0 %) Off On Off(delayed) Off if Y10 0 % On if Y10 0 % 3204Z06E Siemens uilding Technologies CM2N3204E / Landis & Staefa Division 19/20

20 Dimensions 272,5 145 R , , , M01 max. R , ,5 17, Pg 11 2,5 106, , Dimensions in mm 1999 Siemens uilding Technologies Ltd. CM2N3204E / Siemens uilding Technologies 20/20 Landis & Staefa Division