43.155/1. RXE 110: Monitoring unit for fume cupboards. Sauter Components

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1 4.55/ RXE : onitoring unit for fume cupboards Used in conjunction with RLE 5 air-volume controllers for monitoring the air volume or the air speed as a function of the sash opening in fume cupboards; with optical and acoustic alarm (as per EN 475). Housing of thermoplastic; suitable for fitting onto walls; frontal membrane keypad with 5 function keys for,,, low speed and. Two power cables:,9 m in length;,5 mm and either,4 mm (F) or 9,4 mm (F). Type Description Power Weight kg RXE F For sash sensor SGU 4 V~,45 RXE F For flow sensor SVU 4 V~,45 F: F: Inputs (R i = kω) Inputs (R i = kω) Actual-value signal... V Actual-value signal... V Setpoint signal, night... V Setpoint signal: night... V Air-volume limitation... V =...% Air-volume limitation... V =...% Setpoint signal... V Outputs Outputs Contacts: ) 4 V = (... ma) Contacts: ) 4 V = (... ma) Contacts: alarm ) 4 V = (... ma) Contacts: alarm ) 4 V = (... ma) Setpoint signal )... V, load > 5 kω Setpoint signal )... V, load > 5 kω Ext. contacts % V Y667 Power supply 4 V~ +5, %, Hz Wiring diagram F A664 Power consumption approx. 7 VA F A84 Back-up in the event of Dimension drawing 664 mains power failure >5. (super cap) Fitting instructions F V Ambient temp....4 C F V 5568 Ambient humidity < 9 %rh Degree of protection IP 44 (EN 659) ) Protected against reversed polarity ) Protected against short circuits and excess voltage up to 4 V~ Operation: F Together with the RLE 5 air-volume controller, the fume-cupboard monitoring unit monitors the volume of air through the fume cupboard. The sash's opening is fed as the setpoint to the monitoring unit and compared with the air volume's actual value. The deviation is indicated both optically and acoustically, as required by EN 475. An illuated strip of LEDs indicates the deviation between the target and the actual values. Starting at %, an LED lights up for each further % (but the first LED denotes In operation ). If the setpoint and the actual value are within ± 8% of each other, the LEDs light up green. If the actual value is too small by more than 8%, they light up red, and if it is too large by more than 8%, the LEDs light up yellow. In the event of a malfunction, an acoustic signal is emitted and the alarm contacts open. The acoustic alarm sounds if the air volume's actual value is either smaller by more than 8% or larger by more than 8% than the setpoint. The acoustic alarm is activated with a time delay of about 5 seconds. The alarm can be suppressed by pressing the key. When actual value and setpoint again reach equilibrium, the acoustic alarm is again ready for operation. The alarm signal fed to the BS is not affected by the key. On fume cupboards with both vertical and horizontal sashes, the signal from the horizontal sash can be fed to the monitoring unit via external contacts with priority over the vertical sash. The setpoint signal ( V = % ) from the monitoring unit (GY/PK wire) is fed back to the monitoring unit (PK wire) via the external switch (on the fume cupboard s sash). A key combination allows the setpoint signal of the SGU sash sensor to be restricted (imum restriction) to between and %. If the limit is undercut, the comparison between setpoint and actual value uses the programmed value. If this value is undercut, an acoustic signal is emitted. If the SGU sash sensor is fitted at the rear of the fume cupboard, the setpoint signal can be inverted by employing an internal change-over switch (jumper).

2 4.55/ RXE Operation: F Together with the RLE 5 air-volume controller, the fume-cupboard monitoring unit monitors the air intake speed in the fume cupboard. The air speed is fed as the setpoint to the monitoring unit and compared with the actual value. The deviation is indicated both optically and acoustically, as required by EN 475. An illuated strip of LEDs indicates the deviation between the target and the actual values (but the first LED denotes In operation ). Starting at, m/s, an LED lights up for each further, m/s. If the setpoint is equal to or greater than the actual value, the LEDs light up green and there is no acoustic signal. If the limit of the actual value is undercut, the LEDs light up red and an acoustic signal is emitted with a time lag of about 5 seconds, and the alarm contacts open. The alarm can be suppressed by pressing the key. When actual value and setpoint again reach equilibrium, the acoustic alarm is again ready for operation. The alarm signal fed to the BS is not affected by the key. The setpoint for controlling the air intake speed can be set using a key combination between, and, m/s. The difference to the setpoint for the alarm can also be set via a key combination between, and, m/s. The monitoring unit has a control loop with an integral action time of s. The amplification factor can be set between,5 and,5 using a key combination. Function keys Regardless of the position of the sash, an air volume of % is given, the acoustic alarm is activated and the alarm contacts open. Regardless of the position of the sash, an air volume of % is given, the acoustic alarm is activated and the alarm contacts open. low speed Reduces the inlet speed by % (factor of.7) at the sash in daytime operation. Additional technical data Suppresses the acoustic alarm. Revokes the night-time mode; suppresses BS control via timer. On pressing the key, the red night LED goes out and the contacts are opened. Complies with:- EC directive 89/6/EC EN 6-6-/ EN 6-6- EN 6-6-/ EN Dimension drawing 67 5 low speed 9 664

3 RXE 4.55/ Wiring diagram RXE F 4 V~ BN (V) V= GY/PK A/B PK BK Xs normal (factor =.) low speed (fact=.7) a WH S GY % timer on w % b YE RD/ + RD xi ΔV = +/-8% mode A/B: S VT GN V= % SGU Xs night a = RLE 5 b = RLE 5 alarm A664e RXE F (gain) S 4 V~ BN (Xs) a normal (factor =.) low speed (fact=.7) S % % (Δv [m/s]) timer on b RD Xi BK WH GY YE RD/ w VT GN SVU Xs night a = RLE 5 b = alarm A84c Key BN brown xi actual-value signal, RLE 5 (F) blue xi actual-value signal, SGU (F) RD red Xs setpoint signal, SGU (F) PK pink Xs night setpoint signal, night YE yellow w command signal, RLE 5 GY/PK grey/pink Limit limitation signal RD/ red/blue S presence indicator BK black S alarm indicator WH white opto-coupler GY grey optional VT GN violet green

4 4.55/4 RXE Example of application. Volume of return air controlled in proportion to the amount that the sash is opened. geschlossener Raum enclosed room local étanche RXE 8 8 RLE 5 F 4 5 SGU F 6 G EY 9 T 7 P RXE F B6d VAV controller 4 Pressure controller 7 onitoring unit Damper drive 5 Return-air VAV controller for fume cupboards 8 anual damper Reducing box 6 Sash sensor 9 Room-temperature controller VAV adding unit EY Control centre; night mode; collective alarm

5 RXE 4.55/5 Example of application. Constant air intake speed controlled independently of the amount that the sash is opened. geschlossener Raum enclosed room local étanche RXE SVU F4 6 EY 9 T 7 P RXE F B86c VAV controller 4 Pressure controller 7 onitoring unit Damper drive 5 Return-air VAV controller for fume cupboards 8 anual damper Reducing box 6 Flow sensor 9 Room-temperature controller VAV adding unit EY Control centre; night mode; collective alarm Printed in Switzerland Right of amendment reserved N.B.: A comma between cardinal numbers denotes a decimal point Fr. Sauter AG, CH-46 Basle