Viconics Electric Step Controllers
Electric Heat Step Controllers
The Viconics R850V series LOW VOLTAGE 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 full modulation of the load from 0 to 100% of the total capacity.
Features:
- Pulsed or analog 0-10 VDC stage
- 4 or 8 step models
- Up to 16 stage total with slave unit
- Test button
Specifications:
Relay Outputs: Isolated relay 30 VAC @ 1.0 amps max. per output, up to 4.0 amps total per R850 controller
Vernier stage: VDC pulsed; 6 VDC, 30mA max. 0-10 VDC 5mA max.
Input Impedance: 0-10 VDC into 10KΩ minimum
Power Supply: 24 VAC -15% + 10% 50/60Hz; 4 VA Use a Class 1 (properly fused) or Class 2, CSA or UL recognized transformer for power supply & relay outputs.
The Viconics R851B series LINE OR LOW VOLTAGE STEP CONTROLLER is designed for cost effective, precise modulation of multi-stage control applications. A common application is a multi-step electric boiler.
Features:
- Analog 0-10 VDC stage
- 4 or 8 step models
- Up to 16 stage total with slave unit
- Test button
Specifications:
Relay Outputs: Pilot Duty: 24 – 120 VAC – 720 VA
Motor Load: 120 VAC – 1 HP; 240 VAC – 2 HP
Vernier stage: VDC pulsed: 0-10 VDC 5mA max.
Input Impedance: 0-10 VDC into 10KΩ minimum
Power Supply: 24 VAC -15% + 10% 50/60Hz; 4 VA
Change "B" to "V" for low voltage
