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Allen-Bradley 1794-OF4I Flex I/O Isolated Analog Output Module

Product Description

The 1794-OF4I is a 4-channel isolated analog output module from Allen-Bradley's Flex I/O series, designed for industrial automation systems requiring precise control of analog signals. It provides isolated voltage/current outputs for applications like process control, motor speed regulation, and HVAC systems .

Key Features

High Precision Outputs
- 4 isolated channels supporting 0–20 mA, 4–20 mA, ±10V DC, and 0–10V DC signals .
- 16-bit resolution for accurate signal generation .
Isolation & Protection
- Channel-to-channel isolation (50V continuous) to prevent interference .
- Short-circuit and overvoltage protection for robust operation .
Flexible Integration
- Compatible with 1794-TB3, 1794-TB3S, and 1794-TBN terminal bases .
- Supports RIUP (Removal and Insertion Under Power) for hot-swapping .
Diagnostics & Indicators
- LED status lights for power, communication, and channel activity .
Environmental Durability
- Operating temperature: 0°C to +55°C .
- IP20 enclosure (requires protective housing for harsh environments) .

Technical Specifications

Parameter	Value
Model	1794-OF4I
Output Channels	4 (isolated)
Output Ranges	0–20 mA, 4–20 mA, ±10V DC, 0–10V DC
Resolution	16-bit
Isolation Voltage	50V continuous
Power Supply	24V DC (19.2–31.2V range)
Dimensions	94 × 94 × 53.3 mm
Weight	~0.5 kg

Applications

Process Control: Valve positioning, flow/pressure regulation .
Motor Drives: Speed control for VFDs .
HVAC Systems: Fan/pump modulation .

Installation & Usage Notes

Wiring
- Use shielded twisted-pair cables for noise immunity .
- Ensure proper grounding to avoid signal degradation .
Configuration
- Program via Studio 5000 or RSLogix 5000 for Logix platforms .
Maintenance
- Regularly inspect terminal connections for corrosion .