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Saia-Burgess Controls AG

Manual for PCD7.L79xN room controllers

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Document 27 / 602

E

N02 │ 2013-11-27

Functions, regulation

Function

3-21

3

Restrictions:

This parameter will be stored in the EEPROM of the controller. Therefore it has to

keep in mind, that 10’000 writing cycles must not exceed (same as for the other para-

meters in the config-Fbox).

This means this parameter should only be written on a changed value and not too

often.

If this parameter will be changed for example 4 times per day, the lifetime of this

EEPROM parameter will be 7 years.

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Содержание PCD7.L79 Series

Страница 1: ...Document 27 602 Version EN02 2013 11 27 User manual the compact PCD7 L79xN room controller Controls Division ...

Страница 2: ...Saia Burgess Controls AG Manual for PCD7 L79xN room controllers Document 27 602 EN02 2013 11 27 ...

Страница 3: ...ssioning instructions 2 1 Safety instructions 2 1 2 2 Assembly instructions 2 2 2 2 1 Mounting Disassembly 2 3 2 3 Procedure for the temperature calibration on commissioning 2 4 3 Function 3 1 Communication 3 1 3 1 1 Functions commissioning 3 1 3 2 Functions settings 3 5 3 2 1 Functions settings room control unit 3 6 3 2 2 Functions settings operation 3 6 3 2 3 Functions settings hardware 3 9 3 2 ...

Страница 4: ...rical load on Serial S Net 6 2 6 1 3 Technical overview of room controllers PCD7 L790N L793N 6 3 6 1 4 Dimension of room controller PCD7 L790N L793N 6 4 6 2 Type description 6 5 6 2 1 Technical data for PCD7 L790N 6 5 6 2 2 Technical data for PCD7 L791N 6 7 6 2 3 Technical data for PCD7 L792N 6 9 6 2 4 Technical data for PCD7 L793N 6 11 A Appendix A 1 Icons A 1 A 2 Order codes A 2 A 3 Address of S...

Страница 5: ...Date Version Changes Remarks 2011 11 28 EN01 Document derived from the manual 26 868 2013 08 20 EN02 overall Logo and company name changed 0 2 Trademarks Saia PCD and Saia PG5 are registered trademarks of Saia Burgess Controls AG Subject to technical changes Saia Burgess Controls AG 2011 All rights reserved Published in Switzerland ...

Страница 6: ...ices or connected directly to the automation station as Serial S Net slaves Various applications provide different control and operating options in Serial S Net operation In RIO operating mode control can be executed entirely externally in the master station In this case the single room controller is used simply as a hardware input output for climate control Serial S Net Bus S Bus RS 485 Data Mode...

Страница 7: ...ontroller maintains the room temperature within the specified limits at standby level Use The room is in use and should be brought to a comfortable temperature The state can be reached by pressing the presence key addressing an external presence sensor or sneding an instruction over the network Library of function objects The PCD7 L79xN Room Control library pf function objects for the single room ...

Страница 8: ...ol with communication to the automation station The controller is run as a slave station with a unique Bus address within a serial S Net system Control is handled by the individual room controller with its own control algorithm The control functions time or event driven are passed to the individual room controller by the automation station via suitably configurable function objects or network vari...

Страница 9: ...the automation station The Saia PCD master station handles all regulation and control tasks The room controller itself is only used as a remote input output unit Regulation and control can then be adapted to requirements in a very flexible way For parameterization RIO function objects are provided in the room controller library T P M LonW orks BACnet Serial S Net RIO ...

Страница 10: ...ith changeover Radiator cooled ceiling combinations Variable Air Volume VAV systems 2 tube for heating cooling or changeover Application Room controllers Valves Room control PCD7 L790N 24 V PWM PCD7 L791N 24 V PWM or 24 V 3 point PCD7 L792N 24 V PWM or 24 V 3 point yes PCD7 L793N 24 V PWM or 24 V 3 point or 0 10 V yes 4 tube for heating cooling or changeover Application Room controllers Valves Roo...

Страница 11: ...n NTC Internal temperature sensor Additional inputs Digital inputs presence window 2 2 2 2 Analogue inputs 0 10 VDC 1 General details Temperature sensor internal NTC 10 kΩ 0 40 C Control behavior P or PI behavior Communication interface SBC S Bus RS 485 interface Data mode 4800 9600 19200 38400 115200 bit s with automatic detection at restart time Power consumption 1 5 W without actuating drives T...

Страница 12: ...gs per FBox 1 DB Bus cycle time per controller approx 15 ms PCD program cycles 428 for 150 FBoxes measured with PCD3 M5540 Commissioning When the room controller is used in a SBC S Bus network configuration is either by the Saia Burgess Controls PCS PCD Master or the Saia PG5 programming tool Practical function blocks FBoxes simplify commissioning FBox library Saia PG5 FUPLA FBox Selector The Room...

Страница 13: ...013 11 27 Application overview Overview 1 8 1 1 3 2 Phased out room controllers Item Active since Not recommended for new projects Phased out production ceased valid until Commercial Info PCD7 L790N December 2011 PCD7 L791N December 2011 PCD7 L792N December 2011 PCD7 L793N December 2011 ...

Страница 14: ...llers have undergone a comprehensive pre delivery inspection ensuring that they left the factory in perfect condition Before commissioning the devices should be checked for damage arising from incorrect transport or storage Removal of the identification numbers will invalidate the warranty Please ensure that the limits specified in the technical data are not exceeded Failure to do so may result in...

Страница 15: ...iring diagram Existing safety standards must also be observed The individual room controller can only be used to regulate the temperature in dry closed rooms The maximum permissible relative humidity is 90 non condensing Precise temperature measurement is subject to certain requirements as to the positioning of the compact room controllers The device can be mounted directly on the wall or flush mo...

Страница 16: ...t should be noted that all wires are screwed down tight that the ventilation slots are placed above and below positioning that the device is mounted horizontally that the 2 holes for the cable feed in have to be sealed for example with polyurethane foam or with the wall isolation that airflow in to the control ler from the cable duct which could influence the temperature measuring can be prevent C...

Страница 17: ... the different ambient and installation conditions on the commissioning 1 Static calibration Register 8 a Power on of the controller without connected thermal valves or deactivation of the PWM outputs b After several hours of operation the temperature has to be measured near to the lower air slots and to compare with the measured temperature of the con troller Location where the air temperature ha...

Страница 18: ...erformed at spe cific room constellation in which the measurement accuracy is not sufficient a Connect the thermal valves and activate over the setpoint the PWM outputs to 100 b After 30 minutes the temperature has to be measured near to the lower air slots and to compare with the measured temperature of the controller c When the displayed temperature of the controller is too high then it is possi...

Страница 19: ...er has detected the baudrate it stores this information After a restart it will begin by setting this baudrate Only when the room controller cannot establish any communication with the last used baudrate does it restart baudrate detection The picture shows a SASI interface initialisation and the Setup FBox The activated Setup FBox makes cyclical attempts to establish a connection to station addres...

Страница 20: ...at two controllers cannot be activated at the same time via the ser vice pin To terminate the timer prematurely register 60 can also be manually set to 0 e g via the Setup FBox a communication FBox or the debugger Setting the station address The station address can be parameterised via the Setup FBox or directly in regis ter 110 Example Addressing using a Saia PCD and FBoxes Activate station addre...

Страница 21: ... the Room FBox to tell it that the controller has been restarted The FBox then checks that the configuration matches the associated Config FBox If this is not the case all the control parameters are copied over automatically from the Config FBox to the compact room controller This option reduces commissioning to the address setting operation This means that after a device replacement in the course...

Страница 22: ...Document 27 602 EN02 2013 11 27 Communication Function 3 4 3 Firmware version The Setup FBox provides details of the type and firmware version Where there is a connection to the room controller the Controller type and Firmware version are displayed in the Setup FBox ...

Страница 23: ...ption Chapter 5 Use of the Config FBox With the from station address and to station address parameters a range of S Bus addresses can be defined for which the subsequent configuration applies Where automatic configuration is used the Config FBox will automatically copy the configuration to all stations in the range If automatic configuration has not been activated the configuration can be written ...

Страница 24: ...ol unit and this parameter for the difference per step Range of settings FBox 0 1 K Registers 0 10 K 10 3 2 2 Functions settings operation Choice of application register 9 The regulation control functions are dependent on the program selected This register x is used to define the program The associated outputs Y1 Y4 are specified in the Hardware section All outputs not used by the function can be ...

Страница 25: ...ipe heating cooling application The heating valve is controlled via Y1 Y3 and the cooling valve via Y2 Y4 Y1 Y3 Y2 Y4 2 2 pipe H Y2 Y1 7 2 pipe heating application with 2 heating valves connected in parallel The first heating valve is controlled via Y1 Y3 and the second heating valve via Y2 Y4 Y1 Y3 Y2 Y4 2 2 pipe CO Y2 Y1 8 2 pipe change over application with 2 valves connected in parallel The fi...

Страница 26: ...g can be switched between Stop controller default and Restart controller in Room FBox The communications watchdog is run automatically from the Room FBox If communication between the Room FBox and the controller is interrupted for the pre set time value multiplied by 20 seconds the controller performs the specified action see Config FBox A configured value of 255 deactivates the watchdog function ...

Страница 27: ... FBox entry Value Meaning L79x 1 The room temperature is measured by the internal temperature sensor of the compact room controller via S Bus 2 The room temperature is passed to the controller via S Bus see register 30 Normal state window contact register 105 The contact polarity of the window contact can be selected from normal closed or open FBox entry Value Meaning closed 0 When the window is c...

Страница 28: ... Dew point 3 An external dew point switch together with the integrated dew point function enables the controller to switch off the cooling function and prevent further condensation When the contact is closed cooling is enabled within the program If the contact is open cooling is blocked see register 39 Occupancy detector 4 An external presence sensor enables the controller to switch into Comfort o...

Страница 29: ...esistances a filter FBox Filter T1 should be used This can be done by placing of TempE2 symbol from the symbol editor and con necting it with the Filter T1 FBox The Filter Time constant should be set to 10 seconds to get a good result The temperature value will be displayed in the room FBox in the section more informationen or it can be read out from register 69 PWM cycle time for Y1 Y2 in s regis...

Страница 30: ...1 C Y4 V11 2 Heat on PWM Y1 Cool on 0 10 V Y4 H Y3 C Y2 V11 3 Heat on 0 10 V Y3 Cool on PWM Y2 3 point Y1 Y2 4 Use of Triac outputs as a 3 point signal for a 3 point valve The valve run time is given by the PWM cycle time parameter in register 11 6 ways valve 5 Allows the output Y3 a 6 way valve to control 6 way regulation bullet valve On the Output Y3 it is possible to drive a 6 way regulation bu...

Страница 31: ...anual for PCD7 L79xN room controllers Document 27 602 EN02 2013 11 27 Functions settings Function 3 13 3 With this 4 adjustable registers it is possible to use a lot of different 6 way valve types with the PCD7 L793N controllers ...

Страница 32: ...eters Heating Set point Cooling Y Comfort Standby Frost protection XW Reduced Base set point register 37 After a restart the active control set point register 41 is initialised with the base set point value Range of settings default 22 C FBox 10 35 C Registers 100 350 C 10 Deadband comfort mode K register 2 Range of settings default 2 K FBox 0 20 K Registers 0 200 K 10 ...

Страница 33: ...nal band C register 5 Range of settings default 5 K FBox 0 5 10 K Registers 5 100 K 10 Cooling reset time in s register 7 Run down time for the cooling PI controller in seconds The value 0 blocks the integer portion Range of settings default 0 seconds FBox 0 1000 s Registers 0 1000 s Limitation cooling register 140 After a restart the maximum output value for cooling CoolY is limited Range of sett...

Страница 34: ...00 s Registers 0 1000 s Limitation heating register 141 After a restart the maximum output value for heating HeatY is limited Range of settings default 100 FBox 0 100 Registers 0 100 Coasting comfort mode 10min register 1 Where the controller is working in unused mode a presence alert causes it to switch to Comfort mode for a configurable period of time At the end of this time the controller autom...

Страница 35: ... in Frost protection mode For all other functions the window must be closed See window contact Change the Mode The Room FBox input OccMode or register 36 can be used to select the operating mode Value Mode Description 0 Comfort The controller works permanently in Comfort mode 1 Reduced Where no presence is detected the controller is in Reduced mode Where a presence is detected Comfort mode is acti...

Страница 36: ...om control to work the window must be closed The controller has a digital input E1 Window Contact This contact polarity is configurable via the Config FBox or in register 105 Where window closed 0 contact closed 1 contact open The digital input E2 Aux Input can also be configured as a second window contact in the Config FBox or in register 10 1 This contact always works with make contact polarity ...

Страница 37: ...tion The information can be written via the S Bus in conjunction with the Room FBox or register 39 Register 39 Normal operation 0 Coolingvalve closed 1 Digital input E2 Normal operation contact closed Condensation contact open Dew point delay When E2 is configured as dew point it has a timer before Authorizing again after the cool dew point alarm valve is removal This value may delay in the Config...

Страница 38: ...lone without S Bus connection There are different possibilities to change this parameter 1 Adjustment in the Room FBox This can be useful if no timer clock is used for the changing of the operation mode 2 Adjustment over the DefOcc variable form symbol editor This can be useful if a timer clock or superior system is used for the changing of the operation mode 3 Adjustment over writing directly the...

Страница 39: ... stored in the EEPROM of the controller Therefore it has to keep in mind that 10 000 writing cycles must not exceed same as for the other para meters in the config Fbox This means this parameter should only be written on a changed value and not too often If this parameter will be changed for example 4 times per day the lifetime of this EEPROM parameter will be 7 years ...

Страница 40: ...base set point alone Control set point in Reduced operation Set point Active base set point Control set point for Comfort and Standby modes Set point Active base set point register 41 set point adjustment register 34 Control The controller works with 2 independent PI controllers one for heating and one for cooling Each PI controller can be configured to the needs of the system with a proportional ...

Страница 41: ... set the controller will work in heating or cooling mode A configuration parameter register 101 can also be used to make ventilation independent from the mode This allows one to specify e g that in winter only heating is possible and in summer only cooling see Config FBox hardware ventilation mode Limits for heating and cooling The maximum output values for cooling CoolY and heating HeatY can be l...

Страница 42: ...e presence key or the communication function see Function setting control parameter register 0 At the end of this time the mode automatically switches back to Reduced operation Standby 2 When a presence is detected from the presence key or the communication function the controller switches to Comfort mode Where no presence is detected the controller switches directly back to Standby mode Permanent...

Страница 43: ...g and cooling The measurement point can be defined via the configuration See Function settings hardware HeatY heating valve Control of heating valve in in CoolY cooling valve Control of cooling valve in in Err error flag FBox internal output for detecting communication errors If a transmission with all telegram repeats fails completely the FBox disables communication until the next attempt by the ...

Страница 44: ...e must be unique within the project The room name is then entered as a reference into the L79x AO FBoxes L79x AO analogue outputs The L79x AO FBox can be used for remote control RIO of outputs not used by the selected application See sections on Functions settings application and Functions settings hardware L79x AO definition of output Analogue Output All outputs are basically analogue outputs Out...

Страница 45: ...ansmit value is used to determine the communication behaviour of the FBox The value at the input can be transferred to the room controller cyclically or only after a change of value Hysteresis For a transfer after a change of value the Hysteresis parameter defines the minimum change to the input value compared to the last value sent required to trigger a fresh communication ...

Страница 46: ...controllers can also be chained together This allows e g a slave to be the master for another device etc A typical application would be in rooms that can be divided in different ways e g meeting rooms in conference facilities The master controller transmits its output signals for heating valve and cooling valve to the slave The hardware configuration in the slave then decides in turn which outputs...

Страница 47: ...rols AG in Murten 4 2 System requirements Saia PCD1 PCD2 PCD3 or PCS1 Saia PG5 1 4 or higher Application FBox library HLK Init HeaVAC initialisation Standard FBox library communication SASI master User FBox library RoomController PCD7_L79x 4 3 Initialisation At start of project the HeaVAC library and the serial interface need to be initialised The picture shows the configuration for a PCD3 using t...

Страница 48: ...guration can also be carried out manually To do this the Autoconfiguration parameter is set to inactive The Write button then causes the whole parameter set to be copied over to all station addresses from from station adddress to to station address If a station address within a selected range was not configured successfully the Config FBox interrupts Autoconfiguration at this point and displays Er...

Страница 49: ...on on Functionality actual values The room controller can then operate standalone as a master or as a slave 4 6 Control of free outputs Free outputs i e outputs not used by the selected application see Configuration can be controlled at will via the Saia PCD This requires the use of a Room FBox with a unique FBox name The outputs are passed to the Room FBox by the analogue output FBoxes The Room F...

Страница 50: ...2013 11 27 Example applications 4 4 4 4 7 Remote IO Instead of standalone control operation internal regulation and control can also be completely disabled The outputs are then dependent only on the communication master For this RIO remote input output operation the RIO FBox is provided ...

Страница 51: ...every program cycle 20 s The S Bus master has to load the register on a cyclical basis Where the value 1 is entered the controller will stop restart in max 20 seconds 60 Time in 20 second steps during which a further S Bus station address 252 is activated The time is initialised to 15 minutes by operating the service pin Every successful communication within the period restarts the time for anothe...

Страница 52: ...t on the room control unit in up to 6 steps K 10 and step Range 0 10 0 1 0 K step Default 5 Function 9 Application selection Default 5 The valve outputs for heating cooling are defined via register 103 under the heading Hardware TRIAC PWM TRIAC 3 point and 0 10 V are available All outputs not used by the application can be controlled via the communication function RIO operation 0 RIO operation all...

Страница 53: ...nsation is detected the cooling function is disabled 1 Condensation contact open 0 Normal contact closed see register 39 4 Presence contact The current presence status can be seen from register 35 Note A closed contact reg 70 0 indicates a presence reg 35 1 1 No presence contact open 0 Presence contact closed see register 35 6 The input is used as input for an additional temperature sensor NTC 10K...

Страница 54: ...nute steps Range 0 24 0 240 minutes default 0 0 minutes 2 Neutral zone in Comfort mode unit K 10 Range 0 200 0 1 0 K step Default 20 3 Neutral zone in Standby mode unit K 10 Range 10 200 1 1 0 K step Default 40 4 Neutral zone in Reduced mode unit K 10 Range 10 200 1 1 0 K step Default 60 5 Proportional band for cooling unit K 10 Range 5 100 0 5 10 0 K default 50 7 Run down time for cooling unit se...

Страница 55: ... 30 30 3 0 3 0 K 41 R W Set point After a restart the set point is initialised to the base set point in configuration register 37 50 R Effective control actual value 51 R Current control mode 0 automatic 1 heating 3 cooling 5 frost protection 6 off 10 manual 54 R Effective control set point 142 R W Current valve limit for cooling CoolY Range 0 100 default 100 143 R W Current valve limit for heatin...

Страница 56: ...10 0 dry 1 condensation 59 R Current operating mode 0 Comfort 1 Reduced 2 Standby Outputs 45 R W Manual control of Y3 0 10 V where the output is not used by the application See Configuration register 103 Or control of the valve Y3 in the application selection RIO see HW configuration registers 9 Unit range 0 100 0 100 0 10 V 46 R W Manual control of Y4 0 10 V where the output is not used by the ap...

Страница 57: ...ating valve in Manual mode see register 31 and configuration register 103 Unit range 0 100 57 R W Manual control of the cooling valve in Manual mode see register 31 and configuration register 103 Unit range 0 100 144 R W Configuration for inverting the outputs Bit 0 Invert PWM output Y1 Bit 1 Invert PWM output Y2 Bit 2 Invert 0 10 V output Y3 Bit 3 Invert 0 10 V output Y4 0 not inverted 1 inverted...

Страница 58: ...2 digital inputs with analogue operation for set point setting and presence sensor with LED display PCD7 L793N 24 VAC compact room controller for heating or cooling with 2 TRIAC outputs 2 0 10 V outputs an integrated temperature sensor 2 digital inputs one 0 10 V input with analogue operation for set point setting and presence sensor with LED display 6 1 1 Performance data for Serial S Net Saia PC...

Страница 59: ... 8 higher impedance than a Standard Receiver Limited by the electrical load on the Serial S Net system a segment without repeater can have no more than 32 Saia PCD controls or 248 compact room controllers connected to it Limited by the Bus cycle time a maximum of 127 compact room controllers can be used in one segment without repeater Number of Saia PCD systems on a Serial S Net line Number of Sai...

Страница 60: ...he Config FBox or the configuration registers When Y1 and Y2 are used at the same time then the max output current will be 800 mA for both combined Valves Y3 Y4 Y3 N Y4 Constant voltage outputs 0 10 V 2 mA max for control of two valves Inputs Window contact E1 window contact Digital input for floating contacts When the window is open the controller automatically switches to Frost protection mode T...

Страница 61: ...S 485 max cable length 1200 m max stations see technical data Transmission rate 4800 9600 19200 38400 115200 bit s with automatic detection after restart Note All inputs can be read by the S Bus via a Room FBox or via registers independently of the application Outputs not used by the application can be freely controlled via S Bus as RIOs 6 1 4 Dimension of room controller PCD7 L790N L793N 83 50 3 ...

Страница 62: ...4 3 1 Power Supply 24VAC A B Designation Terminal Description Power supply 24 V GND 24 VAC 1 5 W typ without actuating drives Outputs Valves Y1 GND Triac outputs 24 VAC 10 800 mA to control 1 valve with PWM signal Inputs Window contact E1 window contact Digital input for floating contacts Additional input E2 aux input Additional digital input for floating contacts Communication Communication D D S...

Страница 63: ...ment 27 602 EN02 2013 11 27 Type description Technical data 6 6 6 S Bus RS485 Service Pin D D E1 E2 Aux Input Window Contact Y1 24V 24V 800 mA PCD7 L790N 3 1 2 6 4 5 6 7 8 8 7 5 2 4 3 1 Power Supply 24VAC Y2 Y4 Y3 E3 0 10V 2mA Aux 0 10V A B PWM 24VAC Serial S Net RS485 ...

Страница 64: ...24 V GND 24 VAC 1 5 W typ without actuating drives Outputs Terminal Valves Y1 Y2 Y1 GND Y2 Triac outputs 24 VAC 10 800 mA to control 2 valves with PWM signal or one 3 point valve When Y1 and Y2 are used at the same time then the max output current will be 800 mA for both combined Inputs Terminal Window contact E1 window con tact Digital input for floating contacts Additional input E2 aux input Add...

Страница 65: ...EN02 2013 11 27 Type description Technical data 6 8 6 S Bus RS485 Service Pin D D E1 E2 Aux Input Window Contact Y1 24V 24V 800 mA PCD7 L791N 3 1 2 6 4 5 6 7 8 8 7 5 2 4 3 1 Power Supply 24VAC Y2 Y4 Y3 E3 0 10V 2mA Aux 0 10V A B PWM 24VAC Serial S Net RS485 PWM N 3 Point Open Close ...

Страница 66: ... Terminal Description Power supply 24 V GND 24 VAC 1 5 W typ without actuating drives Outputs Terminal Valves Y1 Y2 Y1 GND Y2 Triac outputs 24 VAC 10 800 mA to control 2 valves with PWM signal or one 3 point valve When Y1 and Y2 are used at the same time then the max output current will be 800 mA for both combined Inputs Terminal Window contact E1 window con tact Digital input for floating contact...

Страница 67: ...N02 2013 11 27 Type description Technical data 6 10 6 S Bus RS485 Service Pin D D E1 E2 Aux Input Window Contact Y1 24V 24V 800 mA PCD7 L792N 3 1 2 6 4 5 6 7 8 8 7 5 2 4 3 1 Power Supply 24VAC Y2 Y4 Y3 E3 0 10V 2mA Aux 0 10V A B 24VAC Serial S Net RS485 PWM N 3 Point Open Close PWM ...

Страница 68: ...scription Power supply 24 V GND 24 VAC 1 5 W typ without actuating drives Outputs Terminal Valves Y1 Y2 Y1 GND Y2 Triac outputs 24 VAC 10 800 mA to control 2 valves with PWM signal or one 3 point valve When Y1 and Y2 are used at the same time then the max output current will be 800 mA for both combined Valves Y3 Y4 Y3 GND Y4 Constant voltage outputs 0 10 V 2 mA max to control 2 valves Inputs Termi...

Страница 69: ...tion Technical data 6 12 6 S Bus RS485 Service Pin D D E1 E2 Aux Input Window Contact Y1 24V 24V 800 mA PCD7 L793N 3 1 2 6 4 5 6 7 8 8 7 5 2 4 3 1 Power Supply 24VAC Y2 Y4 Y3 E3 0 10V 2mA Aux 0 10V A B 24VAC Serial S Net RS485 PWM N 3 Point Open Close 0 10V Supply of the drives external 0 10V PWM 0 10V Sensor ...

Страница 70: ...e reader of the risk to components from electrostatic discharges caused by touch Recommendation Before coming into contact with electrical components you should at least touch the Minus of the system cabinet of PGU connector It is better to use a grounding wrist strap with its cable permanently attached to the Minus of the system This sign accompanies instructions that must always be followed Expl...

Страница 71: ... PCD7 L790N Heating or cooling with TRIAC output without user control PCD7 L791N Heating or cooling with 2 TRIAC outputs without user control PCD7 L792N Heating or cooling with 2 TRIAC outoputs and analogue user control set point potentiometer presence key with LED display PCD7 L793N Heating or cooling with 2 TRIAC and 2 0 10 VDC outputs and analogue user control set point potentiometer presence k...

Страница 72: ...a Burgess Controls AG Saia Burgess Controls AG Bahnhofstrasse 18 3280 Murten Tel 41 26 672 72 72 Fax 41 26 672 74 99 E mail support saia pcd com Homepage www saia pcd com Support www sbc support com Postal address for returns from customers of the Swiss Sales office Saia Burgess Controls AG Service Après Vente Bahnhofstrasse 18 3280 Murten ...

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