Viconics R850 Series Quick Start Manual

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DESCRIPTION
The Viconics R850V series step controller is designed for
cost-effective, precise modulation of multi-stage control
applications. 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 R850V is available in 1 model
R850V-8 8 stage unit
If more than 8 stages are required, the R850-V8 can be
used as a master unit with another R850V as a slave unit.
Adding another unit can bring the total step number up to
16.
INPUT SIGNAL
The R850V has four INPUT dip switches (S1 to S4) to select the
control signal input: They are compatible with industry-standard signals.
DIP SWITCH ADJUSTMENTS & WIRING CONTROL INPUT
028-5007-03 LIT-R850V-E06-EN
R850V STEP CONTROLLER
WITH INTEGRATED VERNIER STAGE
Pulsed or analog 0 to 10 Vdc vernier stage
8 step models
Up to 16 stage total with a slave unit
Test button
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
Innovative Control Solutions For Your Needs
R850 SERIES
OVERRIDE TEST BUTTON
The override test button can be used to by-pass the
interstage delay and bring on all stages at one time. This
simplifies the verification of the configured maximum number
of stages.
A status LED per step will come on for each of the configured
stages.
SPECIFICATIONS
Agency cULus
Approval:
Operating 0°C to 80°C ( 32°F to 176°F )
Conditions: 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 K∧ 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.
ON
1 2 3
(1-4) Input
signal selection
ON
0 to 10 Vdc
1 2
ON
4 to 20 mA
1 2
Oct-20
R850V-8
ON
4 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)
3 4
ON = Vdc pulsed signal (SSR)
(1) Sequence of operation
3 4
(LIFO or FIFO)
OFF = LIFO (Last IN, First OUT)
ON = FIFO (First IN, First OUT)
1