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SKU: 1794-OE12

Allen-Bradley 1794-OE12 Analog Output Module

The Allen-Bradley 1794-OE12 is a 12-channel FLEX I/O analog output module. It offers 16-bit resolution for ±10V and 4-20mA signals with 0.1% accuracy. This high-density module provides precise control for actuators and process valves in distributed I/O systems.

The Allen-Bradley 1794-OE12 provides high-density analog signal generation within the versatile FLEX I/O platform. This module features twelve independent channels to control a wide array of industrial actuators. Furthermore, its small footprint allows for significant space savings inside control cabinets. It effectively bridges the gap between digital controllers and precision analog field equipment. Engineers typically select this model for distributed I/O architectures requiring high channel counts.

Precision Control and Conversion Performance

This module utilizes advanced 16-bit resolution to deliver highly accurate command signals. Each channel converts digital data into precise electrical outputs with a 0.1% full-scale accuracy. Consequently, the unit provides the granularity needed for sensitive process adjustments. The hardware supports multiple signal formats to ensure compatibility with global instrumentation standards.

  • Resolution: 16-bit unipolar or bipolar
  • Current Output Ranges: 0–20 mA and 4–20 mA
  • Voltage Output Range: ±10V DC
  • Current Resolution: 0.641 μA per LSB
  • Voltage Resolution: 320 μV per LSB
  • Step Response: < 2 ms to 95% of final value
  • Data Format: 16-bit 2’s complement or binary

Electrical and Thermal Specifications

The 1794-OE12 operates on a nominal 24V DC external power supply. It maintains stable performance across a voltage range of 10.5V to 31.2V DC. Additionally, the design prioritizes efficient thermal management to prevent overheating in dense racks. The module consumes approximately 7.68W of power during peak operation at 24V DC. Robust internal circuitry protects the device against transient voltage spikes common in industrial settings.

Mechanical Installation and Terminal Compatibility

This module mounts onto a 1794 terminal base to simplify field wiring tasks. Specifically, the unit requires a keyswitch setting at position 4 for proper alignment. This mechanical keying prevents the insertion of incorrect modules into live bases. Users can perform maintenance without removing existing wire terminations from the base unit. This feature reduces downtime during routine inspections or module swaps.

Environmental Durability and Reliability

Rockwell Automation designed the 1794-OE12 to withstand harsh manufacturing environments. The unit handles operational shocks up to 30g and continuous vibrations of 5g. Moreover, it functions reliably in temperatures ranging from 0°C to 55°C. The module also complies with major international standards including CE, c-UL-us, and CSA. These certifications confirm its suitability for global deployment in oil, gas, and chemical processing plants.