The Allen-Bradley 1794-IF4I is a 4-channel isolated analog input module from the Bulletin 1794 FLEX I/O family. It is designed to interface analog current and voltage signals from field instruments with Allen-Bradley programmable control systems. Each of its four analog inputs is isolated, helping reduce interference and ground-loop issues in demanding automation applications.
Features
- 4 individually isolated analog input channels
- Supports both current and voltage signals
- Configurable 4–20 mA, 0–20 mA and ±20 mA
- Configurable 0–5 V, ±5 V, 0–10 V and ±10 V
- High 16-bit unipolar resolution
- Sigma-Delta analog-to-digital conversion
- 0.1% full-scale accuracy at 25°C
- Fast configurable channel update rate
- High voltage-input impedance
- Modular FLEX I/O architecture
- Designed for distributed process and machine-control systems
Typical Applications
- Pressure transmitter monitoring
- Temperature measurement systems
- Flow transmitter monitoring
- Tank and liquid-level measurement
- Process instrumentation
- Motor and pump monitoring
- Industrial process control
- Machinery automation
- Marine machinery monitoring
- Engine-room automation
- PLC-based data acquisition
- Distributed analog I/O systems
