.svg?v=180920048278408794651776809924){kind=small}
Viconics R850V-8 8-Stage Low-Voltage Step Controller with Vernier Output
- Regular price
- $899.00
- Sale price
- $899.00
- Regular price
-
Couldn't load pickup availability
Product Description P/N: R850V-8
Description
Viconics R850V-8 is an eight-stage low-voltage step controller designed for precise modulation of multi-stage heating applications. It is commonly used with electric duct heaters and provides an integrated vernier output for proportional control of the total heating capacity.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Viconics |
| Part Number | R850V-8 |
| Category | HVAC |
| Subcategory | Electric Heater Step Controllers |
| Product Series | R850V |
| Product Type | Low-Voltage Step Controller |
| Stage Capacity | 8 stages |
| Power Supply | 24 VAC -15%, +10%, 50/60 Hz |
| Power Consumption | 4 VA |
| Control Inputs | 0–10 VDC, 4–20 mA, 0–135 ohm |
| 0–10 VDC Vernier Output | 5 mA maximum |
| Pulsed Vernier Output | 6 VDC, 30 mA maximum |
| Relay Outputs | Isolated relay, 30 VAC, 1.0 A maximum per output |
| Sequencing | LIFO or FIFO selectable |
| Operating Temperature | 0–80°C (32–176°F) |
| Operating Humidity | 0–95% RH, non-condensing |
| Expansion Capability | Up to 16 stages using master/slave configuration |
| Weight | 2 lb |
Information About R850V-8
The R850V-8 is part of the Viconics R850V series of microcomputer-based step controllers for electric heating and other staging applications. It operates from 24 VAC and accepts standard 0–10 VDC, 4–20 mA, and 0–135 ohm control signals. The controller provides eight selectable stages with adjustable inter-stage timing and configurable LIFO or FIFO sequencing. Its vernier stage can provide either 0–10 VDC analog output for SCR control or a pulsed signal for SSR applications.
Key Features:
- Eight-Stage Control: Provides up to eight independently sequenced heating stages.
- Vernier Output: Provides proportional modulation from 0–100% of total load capacity.
- Multiple Input Signals: Accepts 0–10 VDC, 4–20 mA, and 0–135 ohm control signals.
- Adjustable Timing: Allows configuration of inter-stage delays for controlled equipment sequencing.
- LIFO/FIFO Sequencing: Supports selectable last-in-first-out or first-in-first-out operation.
- SCR Compatibility: Provides a 0–10 VDC vernier signal for proportional SCR power control.
- SSR Compatibility: Supports pulsed vernier output for solid-state relay applications.
- Expandable Control: Can operate as a master with another R850V unit for up to 16 stages.
The R850V-8 delivers the staging flexibility and proportional control required for reliable multi-stage electric heating applications.
Description
Viconics R850V-8 is an eight-stage low-voltage step controller designed for precise modulation of multi-stage heating applications. It is commonly used with electric duct heaters and provides an integrated vernier output for proportional control of the total heating capacity.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Viconics |
| Part Number | R850V-8 |
| Category | HVAC |
| Subcategory | Electric Heater Step Controllers |
| Product Series | R850V |
| Product Type | Low-Voltage Step Controller |
| Stage Capacity | 8 stages |
| Power Supply | 24 VAC -15%, +10%, 50/60 Hz |
| Power Consumption | 4 VA |
| Control Inputs | 0–10 VDC, 4–20 mA, 0–135 ohm |
| 0–10 VDC Vernier Output | 5 mA maximum |
| Pulsed Vernier Output | 6 VDC, 30 mA maximum |
| Relay Outputs | Isolated relay, 30 VAC, 1.0 A maximum per output |
| Sequencing | LIFO or FIFO selectable |
| Operating Temperature | 0–80°C (32–176°F) |
| Operating Humidity | 0–95% RH, non-condensing |
| Expansion Capability | Up to 16 stages using master/slave configuration |
| Weight | 2 lb |
Information About R850V-8
The R850V-8 is part of the Viconics R850V series of microcomputer-based step controllers for electric heating and other staging applications. It operates from 24 VAC and accepts standard 0–10 VDC, 4–20 mA, and 0–135 ohm control signals. The controller provides eight selectable stages with adjustable inter-stage timing and configurable LIFO or FIFO sequencing. Its vernier stage can provide either 0–10 VDC analog output for SCR control or a pulsed signal for SSR applications.
Key Features:
- Eight-Stage Control: Provides up to eight independently sequenced heating stages.
- Vernier Output: Provides proportional modulation from 0–100% of total load capacity.
- Multiple Input Signals: Accepts 0–10 VDC, 4–20 mA, and 0–135 ohm control signals.
- Adjustable Timing: Allows configuration of inter-stage delays for controlled equipment sequencing.
- LIFO/FIFO Sequencing: Supports selectable last-in-first-out or first-in-first-out operation.
- SCR Compatibility: Provides a 0–10 VDC vernier signal for proportional SCR power control.
- SSR Compatibility: Supports pulsed vernier output for solid-state relay applications.
- Expandable Control: Can operate as a master with another R850V unit for up to 16 stages.
The R850V-8 delivers the staging flexibility and proportional control required for reliable multi-stage electric heating applications.