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Product overview
The Viconics R820 series SCR power controls are designed for cost effective, precise
modulation of electric loads for most electric heating applications.
(Applicable on resistive loads only)
The R820 series consists of SCR's power controls, c/w factory assembled heatsink for
surface or in-panel mounting.
Models available
Model No.
R820-211-REV2
R820-213-REV2
R820-321-REV2
R820-323-REV2
R820-341-REV2
R820-343-REV2
R820-421-REV2
R820-423-REV2
R820-441-REV2
R820-443-REV2
R820-471-REV2
R820-621-REV2
R820-623-REV2
R820-641-REV2
R820-643-REV2
R820-671-REV2
R820-PCB-A01
Features
Complete assembly with factory installed heat sink.
Designed for surface or panel mounting
UL Recognized
CSA approved for Canada and USA
Status LED
High quality assembly with 2-year warranty
Full line of matching peripheral temperature
controllers
They are compatible with many industry standard signals. A typical application would be to control a modulating
electric duct heater with a 0 to 10 Vdc control signal from an analog room thermostat. The R820 power controller also
contain four dip switch to adjust to the following control signals:
• 0 to 10 Vdc control signal ( 2 to 10 Vdc control range)
• 4 to 20 mA control signal
Voltage Range
24 - 240 Volts AC
24 - 240 Volts AC
24 - 347 Volts AC
24 - 347 Volts AC
24 - 347 Volts AC
24 - 347 Volts AC
24 - 480 Volts AC
24 - 480 Volts AC
24 - 480 Volts AC
24 - 480 Volts AC
24 - 480 Volts AC
24 - 600 Volts AC
24 - 600 Volts AC
24 - 600 Volts AC
24 - 600 Volts AC
24 - 600 Volts AC
24 Vac Electronic PCB
Feature
SCR POWER CONTROLS
Phase
1
3
1
3
1
3
1
3
1
3
1
1
3
1
3
1
1 or 3
Reduced total installation cost
Covers wider array of application with same
component.
Easily integrated into complete assembly requiring
industry listings.
Trouble free approval process
Quick field troubleshooting.
Reduced field service calls.
Simplified component sourcing and matching for
reliable operation
R820 REV2 SERIES
NOVEMBER 2017
Max Current
10 Amp
10 Amp
25 Amp
25 Amp
45 Amp
45 Amp
25 Amp
25 Amp
45 Amp
45 Amp
75 Amp
25 Amp
25 Amp
45 Amp
45 Amp
75 Amp
-----
Benefit
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Related Manuals for Viconics R820 REV2 Series
Summary of Contents for Viconics R820 REV2 Series
- Page 1 SCR POWER CONTROLS NOVEMBER 2017 Product overview The Viconics R820 series SCR power controls are designed for cost effective, precise modulation of electric loads for most electric heating applications. (Applicable on resistive loads only) The R820 series consists of SCR’s power controls, c/w factory assembled heatsink for surface or in-panel mounting.
- Page 2 Power modules installation Important. All external safety devices like: contactors, relays, flow switch & thermal protections are to be supplied and installed by other. When the SCR is installed inside a panel, the enclosure needs to be adequately louvered for proper ventilation and heat dissipation.
-
Page 3: Installation
DIP Switch Adjustments per applications INPUT SIGNAL SWITCH #1 SWITCH #2 SWITCH #3 SWITCH #4 0 to 10 Vdc control signal (2 to 10 Vdc control range) 4 to 20 mA control signal Typical applications 0 To 10 Vdc From a Thermostat Dip switch position 2 V dc = 0% ca pa city 10 V dc = 100% ca pa city... - Page 4 0 To 10 Vdc From a Building Automation System Dip switch position 2 V dc = 0% ca pa city 10 V dc = 100% ca pa city 0 to 10 Vdc control signal Off Off Off On 24vac (Second SSR only on 3 phases models) 4 TO 20mA From a Building Automation System...
- Page 5 24 Vac Power& Wiring • 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.
- Page 6 • Verify control wiring & control signal • Correct control signal is present at the SCR Check polarity of control signal • Verify fuses & all protections & contact the heater manufacturer Viconics Technologies Inc. Tel.: Fax: Toll free: www.viconics.com...