R850 SERIES R850V STEP CONTROLLER
Contents
1. Innovative Control Solutions For Your Needs R850 SERIES R850V STEP CONTROLLER WITH INTEGRATED VERNIER STAGE Pulsed or analog 0 to 10 Vdc vernier stage 4 or 8 step models Up to 16 stage total with a slave unit Test button DESCRIPTION OVERRIDE TEST BUTTON The Viconics R850V series step controller is designed for cost effective precise modulation of multi stage control application A common application is a multi step electric duct heater Y The override test button can be used to by pass the interstage delay and bring on all stage at one time This simplifies the verification of configured maximum number of stage An integrated vernier control output will give a precise and g full modulation of the load from O to 100 of the total A status LED per step will come on for each of the configured capacity stage FEATURES AND BENEFITS SPECIFICATIONS Microcomputer based design Accuracy and reliability Adjustable inter stage delay Provides flexibility in Operating 0 C to 80 C 32 F to 176 replacement applications Conditions 0 to 95 R H non condensing Adjustable Vernier ratio Simplifies design of proportional stage Relay outputs Isolated relay 30 Vac 1 0 amps max per output up to a maximum of 4 0 amps total Choice of pulsed or analog Permits use of SCR or lower eae Vernier output cost SSR per R850 controller See application note 02 Up to 16 stag2. aster unit is proportional to the slave output e 16 STAGE APPLICATION R850V 8 MASTER UNIT R850V 4 SLAVE UNIT See also slave application section at the end 24 Vac contactor coils 24 Vac contactor coils f ps Ay Pi t vernier oui Mm T _ i SOCIOL IOI OMe a a ta ronere RATIO TEST yas 10 Number R850V 8 Master Unit Control Switch R850V 8 Slave Unit Control Switch of stage Switch 3 Switch 4 Switch 5 Switch 6 Switch 3 Switch 4 Switch 5 Switch 6 9 Off Off Off On Off Off Off Off 10 On Off Off On On Off Off Off 11 Off On Off On Off On Off Off 12 On On Off On On On Off Off 13 Off Off On On Off Off On Off 14 On Off On On On Off On Off 15 Off On On On Off On On Off 16 On On On On On On On Off The intensity of the yellow status LED on the master unit is proportional to the slave output R850V DIMENSIONS amp INSTALLATION 7 075 0 325 0 250 0 425 0 325 Power indicating Vernier output green LED green LED Slave output yellow LED 2 700 3 675 JUNE 99 120 9 E Z DELAY s 30 a ON ol aaa PERRON T N M za vozrro4 60 90 A 0 225 Install on the mounting plate on the electrical cabinet using five 6 pan head metal screw Do not over torque the screws to prevent damage to the board Specifications and equipment are subject to change without prior notice All R850V series controls are for use on
3. ave rectifier bridge On 0 to 10 Vdc control signal the reference of the control signal is the Common of the power supply of the SCR controller card e Use a Class 1 properly fused or Class 2 CSA or UL recognized transformer e 4STAGE APPLICATION R850V 4 24 Vac contactor coils hi t ah AAO Lou ron zao Number R850V 4 Control Switch of stage Switch 3 Switch 4 1 Off Off 2 On Off 3 Off On 4 On On e 8STAGE APPLICATION R850V 8 24 Vac contactor coils LAW WN ocon T N O za Number R850V 8 Control Switch of stage Switch 3 Switch 4 Switch 5 Switch 6 1 Off Off Off Off 2 On Off Off Off 3 Off On Off Off 4 On On Off Off 5 Off Off On Off 6 On Off On Off 7 Off On On Off 8 On On On Off e 12 STAGE APPLICATION R850V 8 MASTER UNIT R850V 4 SLAVE UNIT See also slave application section at the end 24 Vac contactor coils 24 Vac contactor coils t ae A T gt Use vernier output of master a ct c2 c3 c4 c5 c6 C7 C8 if vernier control is required C9 C10 C11 C12 Oo pa Number R850V 8 Master Unit Control Switch R850V 4 Slave Unit of stage Switch 3 Switch 4 Switch 5 Switch 6 Switch 3 Switch 4 9 Off Off Off On Off Off 10 On Off Off On On Off 11 Off On Off On Off On 12 On On Off On On On The intensity of the yellow status LED on the m
4. elay from 30 seconds up 120 seconds 60 This delay is active in 3 ways DA e Minimum time delay between each step activation when the control signal rises a e Minimum ON time when the step is activated DELA e Minimum time delay between each step de activation when the control signal drops ce Vernier stage ratio r A potentiometer is used to adjust the vernier stage ratio from 100 to 200 capacity of the other on off vob ew stage capacity RATIO SETTING See also slave application section at the end First adjust the vernier stage ratio potentiometer This will insure a smooth capacity rise of the total load Example 1 e The total unit has 100 kW divided in 10 equal stage of 10 kW DEERE If only 10 kW is used as the modulating stage then the heater would have 9 on off mechanical stage plus one modulating stage This modulating stage has the same value as all the other stage Adjust the vernier stage ratio potentiometer to 100 Example 2 The total unit still has 100 kW divided in 10 equal stage of 10 kW If 20 kW are used as the modulating stage then the heater would have 8 on off mechanical stage plus one modulating stage The modulating stage has twice the value as all the other stage Adjust the vernier stage ratio potentiometer to 200 e TYPE OF VERNIER STAGE SETTING The vernier stage output can be configured to operate either as a e Vdc pulsed output to activate an R810 power module e Oto 10 Vdc analog output t
5. es One product family can handle Vernier stage Vdc pulsed 6 Vdc 30 mA max all applications 0 to 10 Vdc 5 mA max Choice of LIFO or FIFO Increased flexibility of FIFO 7 sequencing permits even use of contactors in aire 0 to 10 Vdc into 10 KQ minimum Test button Quick troubleshooting P O O MODELS AVAILABLE Power supply 24 Vac 15 10 50 60 Hz 4 VA The R850 V is available in 2 models Use a Class 1 properly fused or Class 2 e R850V 4 4 stage unit CSA or UL recognized transformer for power e R850V 8 8 stage unit supply amp relay outputs If more than 8 stage are required the R850 V8 can be used Specifications and equipment are subject to change without prior notice as a master unit with another R850V as a slave unit Adding another unit R850 V4 or R850 V8 can bring the total step number up to 12 or 16 INPUT SIGNAL The R850V has four INPUT dip switch S1 to S4 to select the control signal input They are compatible with industry standard signals DIP SWITCH ADJUSTMENTS amp WIRING CONTROL INPUT INPUT DIP SWITCH gt HTA pempe CONTROL DIP SWITCH ZaD OoOoOZzrFa ees 4 i y 1 4 Input signal selection t 3 6 Number of steps selection nnn see next pages for details 0 to 10 Vac i 2 Vernier stage selection Ato 20 MA ma OFF 0 to 10 Vdc SCR ON Vdc pulsed signal SSR 0 to 135 Q KN 1 Sequence of operation LIFO or FIFO OFF LIFO Last IN First OUT ON FIFO First IN Fir
6. ly as operating controls Whenever a control failure could lead to personal injury and or loss of property it becomes the responsibility of the user to add safety devices and or alarm system to protect against such catastrophic failures LIFO FIFO ADJUSTMENT The R850V series features 2 different staging sequences e LIFO LAST IN FIRST OUT CONTROL SWITCH 1 OFF FACTORY DEFAULT This is the regular mode Stage 1 will always be the first to energize and the last stage to de energize e FIFO FIRST IN FIRST OUT CONTROL SWITCH 1 ON In this mode the stages are rotated to ensure a more uniform wear of the contactors and elements For example on an increase in demand stage 1 will be energized following by stage 2 etc On a decrease in demand stage 1 will de energized first followed by stage 2 etc Please verify that if this mode is enabled the manufactured product still complies with active codes and regulations VERNIER STAGE SELECTION AND WIRING The Viconics R850V series step controller has an integrated vernier control output This output will give a precise and full modulation of the load from 0 to 100 of the total capacity of the unit If a master slave application is used always connect the vernier output of the master unit ADJUSTMENTS Functions of the units can be configured with six dip switch and 2 potentiometers ni a Interstage delay potentiometer setting 0 A potentiometer is used to adjust the interstage d
7. o activate an R820 SCR power controller e VERNIER STAGE WIRING Control Switch 2 On Vdc pulsed to activate R810 power modules R81 0 Do not wire more than six R810 power module on the vernier stage output Respect the polarity between the R850 step controller board an the R810 power modules Connect V to Connect COM to The green status LED on the master unit will cycle at the same rate as the time proportioning vernier output For more information please refer to the R810 service manual Control Switch 2 Off 0 to 10 Vdc analog output to activate R820 SCR power controller Set the R820 SCR power controller to accept a 0 to 10 Vdc control signal input Switch 1 2 amp 3 Off Switch 4 On The intensity of the green status LED on the master unit is proportional to vernier output R820 SCR Power Controller Co N SLAVE APPLICATION SECTION When using a unit for slave applications it is important that the proper adjustments amp setting be made to the unit for proper operation of the system The yellow LED near the vernier output connector is proportional to the vernier output of the master unit 0 to 5 Vdc On the slave unit e Set vernier ratio potentiometer to 100 e Set interstage delay potentiometer to the same value as the master unit e Set all control signal INPUT dip switch to OFF TEST MODE BUTTON The test mode but
8. st OUT Input Signal Switch Switch 1 Switch 2 Switch 3 Switch 4 0 to 10 Vdc control signal 2 to 10 Vdc control range Off Off Off On 4 to 20 mA control signal Off Off On Off 0 to 135 Q control signal On On Off Off If a slave unit is used wire the control signal input to the master unit only 2 To 10 Vdc Or 0 To 10 Vdc Stand Alone Thermostat Power To The Thermostat Is Supplied By The R850V is AIS ne Et 0 Ohms 0 capacity 135 Ohms 100 capacity 2 Vdc 0 capacity 10 Vdc 100 capacity N02 cease ple Dele Common lw 24 Vac R 0 to 10 Vdc B output 2 To 10 Vdc Or 0 To 10 Vdc From D D C 4 To 20 mA From D D C Building Automation System Building Automation System m 2 Vdc 0 capacity 10 Vdc 100 capacity r SS O FP EEE mN CD sa56 Baaj T N O zas 4 mA 0 capacity 20 mA 100 capacity 24 VAC POWER amp RELAY OUTPUT WIRING The wiring diagrams are for the R850V 8 models with 8 outputs The wiring for the R850V 4 is the same except that the unit only has 4 outputs Terminals Screw terminal amp connector 1 Common Screw terminal amp connector 2 24 Vac Screw terminal amp connector 3 Control Signal input It is not necessary to ground any leg of the transformer to earth with the controller card The controller uses internally a half w
9. ton can be used to verify if the number of stage have been configured properly Press and hold the button for 3 to 4 seconds If a slave unit is used press amp hold the 2 units button simultaneously All the selected stage will come on one after the other until all selected number of stages are all on There is a delay of approximately 5 second between each step activation When all selected stage are on they will stay on for approximately 30 seconds before shutting down OW Go NS Powering up the R850V controller while holding down the test button will by pass the interstage delay for 10 minutes During that period the unit will respond to a changing signal input very rapidly Also hold down slave test button on start up if a slave unit is used After that 10 minute period the unit will function normally with the interstage delays active Viconics Electronics Inc 9245 Langelier Blvd St Leonard Quebec Canada H1P 3K9 www viconics com 28 5007 M 1_BINDER 6_R800 Series SCR SSR Spec sheet english R850 R850 Vse16 doc 4 30 01
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