Overview
Manuals
Channel Configuration
Power and Terminal Base
Commissioning
Features:
- Four individually isolated analog output channels for voltage or current signals.
- Fifteen-bit-plus-sign resolution with a 2.5 or 5.0 ms all-channel update setting.
- Requires an external 19.2 to 31.2 V DC supply, nominally 24 V DC.
The 1794-OF4I adds four individually isolated analog output channels to a compatible FLEX I/O node. Each channel can be configured for a supported voltage or current range, allowing the controller to send analog setpoints to equipment such as valve positioners, I/P converters, variable-frequency drives and process instruments while maintaining channel-to-channel isolation.
The module provides 15-bit-plus-sign resolution and a documented all-channel update selection of 2.5 or 5.0 ms. Reliable operation depends on the correct FLEX I/O terminal base, a 19.2 to 31.2 V DC external supply, field polarity and load, channel range, scaling, data format and fault behavior. Those settings must match the controller program and connected device requirements.
The 1794-OF4I Allen-Bradley FLEX I/O Isolated Analog Output Module may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1794-OF4I documentation and reference links.
Important Notice: The linked PDF is an official manufacturer document for this model or its documented exact product family. Confirm the complete order code, revision, connected hardware and installation requirements before replacement. Accessories, software and certificates are included only when stated in the written quotation.
Match each channel's voltage or current range, scaling, data format and fault action to the controller program.
Confirm the external 19.2 to 31.2 V DC supply and the exact compatible FLEX I/O terminal base before wiring.
Verify polarity, load range, commanded value, actual loop current or voltage and safe fault response on all four channels.
