Viconics R850 Installation Guide - Manual

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
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.
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
impedance:
0 to 10 Vdc into 10 K Ω minimum
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
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
Innovative Control Solutions For Your Needs
(2) Vernier stage selection
OFF = 0 to 10 Vdc (SCR)
ON = Vdc pulsed signal (SSR)
4 to 20 mA
0 to 135 Ω
2 1 3 4
ON
2 1 3 4 (1) Sequence of operation
(LIFO or FIFO)
OFF = LIFO (Last IN, First OUT)
ON = FIFO (First IN, First OUT)
R850V-8
0 to 10 Vdc
signal selection
(1-4) Input
ON
2 1 3 4
ON
I N P U T
2 1 4 3
S
ON
1
W
(3-6) Number of steps selection
(see next pages for details)
C O N T R O L
4 2 1 3 5 6
S
ON
2
W
4 to 20 mA
(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)
Ω 0 to 135
1 2 3 4
ON
1 3 2 4
2
W
S
(3-4) Number of steps selection
(see next pages for details)
S
signal selection
(1-4) Input
0 to 10 Vdc
ON
1 3 2 4
ON
I N P U T
1 3 2 44
C O N T R O L
3 1 22 4
W1
R850V-4
ON ON