The Allen-Bradley 1794-OF4I is a 4-channel isolated analog output module designed for the Bulletin 1794 FLEX I/O system. It converts digital control commands from a PLC/controller into precise analog voltage or current signals for controlling field devices such as actuators, control valves, drives, positioners, and other process-control equipment.
Key Features
- 4 isolated analog output channels
- Supports voltage and current output signals
- Current ranges include 0–20 mA and 4–20 mA
- Configurable voltage ranges including ±10 V, 0–10 V, ±5 V and 0–5 V
- 15-bit + sign output resolution
- Digital-to-analog conversion for precise field control
- Factory calibrated for reliable operation
- Fast output response of less than 25 µs to 63% of full scale
- Supports multiple data formats, including 2’s complement, binary and offset binary
- Designed for integration with Allen-Bradley FLEX I/O distributed control architectures.
Typical Applications
- Process control and automation systems
- Control valve and actuator positioning
- Variable-frequency drive speed reference
- Motor and machinery control systems
- Pressure, flow, temperature and level control loops
- Distributed PLC-based automation systems
- Marine machinery and auxiliary control systems
- Industrial plant monitoring and control
- Analog reference signal generation for field equipment
