Viconics R851V-4 Quick Start Manual

•
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
The Viconics R851V 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.
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
Adjustable inter-stage delay
Adjustable Vernier ratio
Choice of pulsed or analog
Vernier output
Up to 16 stages
Choice of LIFO or FIFO
sequencing
Test button
MODELS AVAILABLE
The R851-V is available in 2 models
•
R851V-4 4 stage unit
•
R851V-8 8 stage unit
If more than 8 stages are required, the R851-V8 can be used as
a master unit with another R851V as a slave unit. Adding
another unit ( R851V-4 or R851V-8 ) can bring the total step
number up to 12 or 16.
INPUT SIGNAL
The R851V 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
R851V-8
ON
1 2 3 4
(1-4) Input
signal selection
ON
0 to 10 Vdc
1 2 3 4
ON
4 to 20 mA
1 2 3 4
ON
0 to 135
Ω
1 2 3 4
Input Signal Switch
0 to 10 Vdc control signal ( 2 to 10 Vdc control range )
4 to 20 mA control signal
0 to 135 Ω control signal
If a slave unit is used, wire the control signal input to the master unit only
R851V STEP CONTROLLER
WITH INTEGRATED VERNIER STAGE
Accuracy and reliability
Provides flexibility in
replacement applications
Simplifies design of
proportional stage
Permits use of SCR or lower
cost SSR
One product family can handle
all applications
Increased flexibility of FIFO
permits even use of contactors
Quick troubleshooting
ON
1 2 3 4 5 6
(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 = LIFO (Last IN, First OUT)
ON = FIFO (First IN, First OUT)
Innovative Control Solutions For Your Needs
SPECIFICATIONS
Operating 0°C to 80°C ( 32°F to 176°F )
Conditions: 0 % to 95 % R.H. non-condensing
Relay outputs: Pilot duty:
Motor load:
Vernier stage: 0 to 10 Vdc 5 mA max.
Vdc pulsed, 6 Vdc, 30 mA max.
Input
0 to 10 Vdc into 10 KΩ minimum
impedance:
Power supply: 24 Vac -15%, +10% 50/60 Hz; up to18 VA
Use a Class 1 ( properly fused ) or Class 2,
CSA or UL recognized transformer for power
supply & relay outputs.
UL recognized: File # E212649
Specifications and equipment are subject to change without prior notice.
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 stages. A status
led per step will come on for each of the configured stage.
R851V-4
ON ON
1 2 3 4 4 1 2 2
(1-4) Input (3-4) Number of steps selection
signal selection
(see next pages for details)
ON
(2) Vernier stage selection
0 to 10 Vdc
OFF = 0 to 10 Vdc (SCR)
1 2 3 4
ON
ON = Vdc pulsed signal (SSR)
4 to 20 mA
(1) Sequence of operation
1 2 3 4
ON
0 to 135
Ω
OFF = LIFO (Last IN, First OUT)
1 2 3 4
ON = FIFO (First IN, First OUT)
Switch #1 Switch #2
Off Off
Off Off
On On
- 24 - 120 Vac – 720 VA
- 240 Vac – 690 VA
- 120 Vac – 1 HP
240 Vac – 2 HP
-
3 4
(LIFO or FIFO)
Switch #3 Switch #4
Off
On
Off
On
Off
Off
1