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R850
Installation Guide
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Viconics R850 Installation Guide

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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
An integrated vernier control output will give a precise and full modulation of the load from 0 to 100% of the total capacity.
FEATURES AND BENEFITS
Microcomputer-based design Accuracy and reliability Adjustable inter-stage delay Provides flexibility in
replacement applications
Adjustable Vernier ratio Simplifies design of
proportional stage Choice of pulsed or analog Vernier output
Permits use of SCR or lower
cost SSR Up to 16 stages One product family can handle
all applications Choice of LIFO or FIFO sequencing
Increased flexibility of FIFO
permits even use of contactors Test button Quick troubleshooting
MODELS AVAILABLE
The R850-V is available in 2 models
• R850V-4 4 stage unit
• R850V-8 8 stage unit
If more than 8 stage are required, the R850-V8 can be used 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.
OVERRIDE TEST BUTTON
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.
A status LED per step will come on for each of the configured stage.
SPECIFICATIONS
Operating
Conditions:
0°C to 80°C ( 32°F to 176°F ) 0 % to 95 % R.H. non-condensing
Relay outputs: Isolated relay 30 Vac @ 1.0 amps. max. per
output, up to a maximum of 4.0 amps. total per R850 controller. See application note 02.
Vernier stage: Vdc pulsed: 6 Vdc, 30 mA max.
0 to 10 Vdc 5 mA max.
Input
0 to 10 Vdc into 10 KΩ minimum
impedance:
Power supply: 24 Vac -15%, +10% 50/60 Hz; 4 VA
Use a Class 1 ( properly fused ) or Class 2, CSA or UL recognized transformer for power supply & relay outputs.
Specifications and equipment are subject to change without prior notice.
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 & WIRING CONTROL INPUT
ON
21 43
I
NPU
(1-4) Input
signal sele ction
0 to 10 Vdc
4 to 20 mA
0 to 135
ON
ON
ON
Ω
R850V-8
1 W
S
T
21 3 4
21 3 4
21 3 4
ON
421 3 56
CONTR
(3-6) Number of steps selection
(see next pages for details)
(2) Vernier stage selection
OFF = 0 to 10 Vdc (SCR) ON = Vdc pulsed signal (SSR)
(1) Sequence of operation (LIFO or FIFO)
OFF = L IFO (Last IN, First OUT) ON = FIF O (Fir st IN, First OUT)
2W
S
L
O
ON ON
(1-4) Input
signal sele ction
0 to 10 Vdc
4 to 20 mA
0 to 135
1 32 44
I
NPU
ON
1
ON
1 32 4
ON
Ω
1 234
R850V-4
W1 S
T
CONTR
32 4
2WS
3122 4
(3-4) Number of steps selection
(see next pages for details)
(2) Vernier stage selection
OFF = 0 to 10 Vdc (SCR) ON = Vdc pulsed signal (SSR)
(1) Sequence of operation (LIFO or FIFO)
OFF = L IFO (Last IN, First OUT) ON = FIF O (Fir st IN, First OUT)
L
O
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 Ω 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
y
y
y
2
y
( Power To The Thermostat Is Supplied By The R850V )
0 To 135Ω Stand Alone Thermostat
1
123ON4
123
I
P
U
N
2 Vdc = 0% capacity
10 Vdc = 100% capacit
Common
24 Vac
0 to 10 Vdc
output
2 To 10 Vdc Or 0 To 10 Vdc From D.D.C.
Building Automation System
1
123ON4
123
I
PUT
N
2 Vdc = 0% capacity
10 Vdc = 100% capacit
-
+
T
0 Ohms = 0% capacity
135 Ohms = 100% capacit
Building Automation System
4 mA = 0% capacity
0 mA = 100% capacit
1
123ON4
123
W
R
B
I
4 To 20 mA From D.D.C.
1
123ON4
123
­+
PUT
N
I
T
P
U
N
24 VAC POWER & 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 & connector #1 Common Screw terminal & connector #2 24 Vac Screw terminal & 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 wave 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.
• Use a Class 1 ( properly fused ) or Class 2, CSA or UL recognized transformer.
•
4 STAGE APPLICATION R850V-4
24 Vac contactor coils
C1
C2 C3 C4
V
S
C8
C7
C6
C5
C4
C3
C2
C1
C
POWER
12 3
R850V-4
23ON4
1
I
123
P
N
120
90
123ON4
CONTROL
60
30
T
U
200
VR2
150
DELAY(s)
RATIO(%)
100
COM
JUNE 99
REV.1
001-0102
TEST
of stage
Switch #3 Switch #4
1 Off Off 2 On Off 3 Off On 4 On On
2
R850V-4 Control SwitchNumber
8 STAGE APPLICATION R850V-8
V
V
•
24 Vac contactor coils
C1
C2 C3 C4 C5 C6 C7 C8
C3
C2
C1
C
R850V-8
POWER
12 3
23ON4
1
I
123
PUTCO
N
C4
200
VR2
150
DELAY(s)
RATIO(%)
100
123ON4 5 6
NTR
120
90
60
L
O
30
COM
JUNE 99
REV.1
001-01 02
TEST
V
S
C8
C7
C6
C5
•
12 STAGE APPLICATION
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
R850V-8 MASTER UNIT, R 850V-4 SLAVE UNIT ( See also slave application section at the end )
24 Vac contactor coils 24 Vac contactor coils
Use vernier output of master
R850V-8 Control SwitchNumber
S
JU N
R
E
EV
99
.1
TE ST
if verni er control is required
CO M
00 1­01 02
C1 C2 C3 C4 C5 C6 C7 C8 C9
C
P O W
C6C5C4C3C2C1
R850V-8
C8
C7
3
2
1
123ON4 123ON4 5 6
123
N
PUT
CONTR
90
60
O
L
20
12
0
0
D
R
EL
V
15
AT
A
0
R2
IO
Y(
(%
10
30
0
C10 C11 C12
CO
C
P O W
3
2
1
R850V-4
123ON4
123
NPU
C8C7C6C5C4C3C2C1
20
12
0
0
D
90
60
123ON4
CONTR
OL
T
30
R
EL
V
AT
15
A
R2
0
IO
Y(
(%
10 0
M
S
JU N
R
E
EV
99
00 1­01 02
TE ST
Note: Set all control signal INPUT dip switch to OFF on 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 master unit is proportional to the slave output.
3
R850V-8 Master Unit Control Switch R850V-4 Slave UnitNumber
• 16 STAGE APPLICATION R850V-8 MASTER UNIT, R 850V-4 SLAVE UNIT ( See also slave application section at the end )
24 Vac contactor coils 24 Vac contactor coils
Use vernier output of master
C1 C2 C3 C4 C5 C6 C7 C8 C9
C8
C7
C6
C5
C4
C3
C2
C1
C
if vernier control is r equired
V
S
COM
C10 C11 C12 C13 C14 C15 C16
C4
C3
C2
C1
C
COM
V
S
C8
C7
C6
C5
R850V-8
POWER
12 3
123
123ON4 123ON4 5 6
I
UTCONTR
N
P
REV.1
JUNE 99
200
120
90
150
60
L
O
VR2
DELAY(s)
30
100
001-0102
TEST
RATIO(%)
POWER
23
1
R850V-8
123ON4 123ON4 5 6
123
I
NPU
JUNE 99
REV.1
200
120
90
60
CONTR
L
O
T
VR2
150
DELAY(s)
30
100
001-0102
TEST
RATIO(%)
Note: Set all control signal INPUT dip switch to OFF on slave unit.
R850V-8 Master Unit Control Switch R850V-8 Slave Unit Control SwitchNumber
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 & INSTALLATION
7.075"
0.325" 3.450" 0.250"3.050"
V
S
C8
C7
C6
C5
C4
C3
C2
C1
C
COM
0.425"
0.325"
Power indicating
green LED
POWER
23
1
123
2.700"
REV.1
JUNE 9 9
ON
4
23
1
I
N
123ON4 5 6
U
T
CONTR
P
120
90
60
L
O
30
200
VR2
150
DELAY(s)
RATIO(%)
100
001-01 02
TEST
0.225"
Vernier output green LED Slave output yellow LED
3.675"
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 only 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.
4
LIFO / FIFO ADJUSTMENT
The R850V series features 2 different staging sequences:
•
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
•
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.
75
60
90
45
30 120
Interstage delay potentiometer setting
105
A potentiometer is used to adjust the interstage delay from 30 seconds up 120 seconds.
This delay is active in 3 ways.
•
Minimum time delay between each step activation when the control signal rises
•
Minimum ON time when the step is activated
•
Minimum time delay between each step de-activation when the control signal drops
150
125
200
100
Vernier stage ratio
175
A potentiometer is used to adjust the vernier stage ratio from 100% to 200% capacity of the other on/off stage capacity.
60
90
30
120
DELAY( s)
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: The total unit has 100 kW divided in 10 equal stage of 10 kW. If only 10 kW is used as the modulating stage, then the heater would have 9 on/off mechanical stage plus
100
RATIO(% )
150
VR2
200
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%.
•
TYPE OF VERNIER STAGE SETTING
The vernier stage output can be configured to operate either as a:
•
Vdc pulsed output to activate an R810 power module
•
0 to 10 Vdc analog output to activate an R820 SCR power controller.
•
VERNIER STAGE WIRING
Control Switch #2 On Vdc pulsed to activate R810 power modules
R810
Do not wire more than six R810 power module on the vernier stage output
V
S
COM
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
5
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 & #3 Off Switch #4 On
The intensity of the green status LED on the master unit is proportional to vernier output
For more information, please refer to the R820 service manual
C
COM
R820
V
S
C8
C7
C6
C5
C4
C3
C2
C1
SCR Power Controller
POWER
23
1
123
ON
23
4
1
123ON4 5 6
I
T
CONTR
P
U
N
120
90
DELAY(s)
60
L
O
30
JUNE 99
REV.1
200
150
001-0102
VR2
TEST
RATIO(%)
100
1 2 3
SLAVE APPLICATION SECTION
When using a unit for slave applications, it is important that the proper adjustments & 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:
•
Set vernier ratio potentiometer to 100%
•
Set interstage delay potentiometer to the same value as the master unit
•
Set all control signal INPUT dip switch to OFF
123
123ON4
I
N
PUT
TEST MODE BUTTON
The test mode button can be used to verify if the number of stage have been configured properly.
1. Press and hold the button for 3 to 4 seconds.
2. If a slave unit is used, press & hold the 2 units button simultaneously
3. All the selected stage will come on, one after the other until all selected number of stages are all on.
4. There is a delay of approximately 5 second between each step activation.
5. When all selected stage are on, they will stay on for approximately 30 seconds before shutting down.
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
sales@viconics.com
LIT-R850V-E03
6
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