Features:
- Interface Between the FLEX I/O System and Isolated Analog Field Devices
- Combines Capability of High-Precision Signal Conversion with Channel-to-Channel Isolation
- Operates in Conjunction with Multiple Terminal Base Units and FLEX I/O Communication Adapters
The Allen-Bradley 1794-0F4I 4 Output Isolated Analog Module serves as a critical analog output interface within the FLEX I/O architecture, providing reliable isolated current and voltage signals to field instrumentation. The 1794-0F4I continuously converts digital control commands from the programmable controller into precise analog outputs, supporting configurable current ranges of 4 to 20 mA and 0 to 20 mA, as well as voltage ranges of ±10 Volts, ±5 Volts, 0 to 10 Volts, and 0 to 5 Volts. Seamless signal integrity is standard with the 1794-0F4I, with channel isolation preventing cross-talk and ground loop interference between outputs. The 1794-0F4I has been engineered to deliver 15-bit plus sign resolution with exceptional accuracy of 0.1% full scale at 25 degrees Celsius.
The 1794-0F4I provides essential analog output functions for distributed control applications, and is a critical component of the control signal path, directly affecting the proper, precise operation of field actuators and process equipment. One or multiple 1794-0F4I modules may be deployed per FLEX I/O rack depending on the number of analog control points required.
For isolated multi-channel control applications, the 1794-0F4I provides four independent analog output channels with individual channel isolation. In addition to standard signal generation, the 1794-0F4I performs automatic output ranging based on user configuration. The 1794-0F4I module executes signal conversion using internal digital-to-analog circuitry specified in the module specifications. Using this method, the 1794-0F4I continually maintains output stability with update rates of 2.5 or 5 milliseconds for all channels. If the system detects configuration changes or power cycle events, the 1794-0F4I initializes outputs to 0 until valid configuration data is established.
The 1794-0F4I Allen-Bradley 4 Output Isolated Analog Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1794-0F4I 4 Output Isolated Analog Module Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Allen-Bradley 1794-0F4I 4 Output Isolated Analog Module Specs
General
- Manufacturer Allen-Bradley
- Model 1794-0F4I
- Condition New Original ready stock
- Product Family 1794-OF4IXT,1794-IF4I,1794-IF4IXT
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Distributed Control Systems: Used across industries such as Water Treatment, Oil & Gas, and Automotive to manage remote analog devices while minimizing long wiring runs.
- Safety & Compliance: Certified for use in SIL 2 safety-related applications (when used in 1oo2 configurations) and listed for Class I Division 2 hazardous locations.
- High-Noise Environments: Its channel-to-channel isolation protects against signal interference and voltage spikes, critical in power plants or heavy manufacturing.
- Precision Actuator Control: Ideal for driving proportional valves, motor drives, and actuators that require high accuracy and electrical isolation to prevent ground loops.
- Terminal Base Mounting: The module must be snapped onto a compatible terminal base (like the 1794-TB3). Ensure the keyswitch on the base is rotated clockwise to Position 4 before insertion.
- Power Connections: Connect external 24V DC power (19.2–31.2V DC) to terminal 34 and the common return to terminal 16.
- Signal Wiring: Connect individual output leads to the numbered terminals on Row A.
- Crucial: Connect only one current or one voltage signal per channel; never both simultaneously.
- Use shielded copper wire and ground the shield as close to the module as possible to reduce noise.
- Hot Swapping (RIUP): The module supports Removal and Insertion Under Power, allowing you to replace modules without interrupting the rest of the FLEX backplane system.
- Terminal Bases: Fully compatible with various FLEX I/O bases.
- Communication Adapters: Integrates with any 1794 FLEX communication adapter to connect to major networks like EtherNet/IP, ControlNet, and DeviceNet.
- Controller Families: Works seamlessly with ControlLogix and CompactLogix systems using Studio 5000 Logix Designer for configuration.
- Backward Compatibility: The 1794-OF4IXT (extended temperature) version is a direct drop-in replacement for standard environments requiring higher durability.