The Allen-Bradley 1794-OE4/B, also cataloged as the 1794OE4 Flex 4 Point Analog Output Module, operates as a dedicated hardware component for generating 4 to 20 mA control signals within FLEX I/O distributed systems.

Model Suffix Analysis and Hardware Revisions

• Base Catalog Number: 1794-OE4
• Alternate and Spare Part Numbers: 1794OE4, 1794-OE4/A, 1794-OE4/B
• Series Classifications: Series A and Series B revisions
• Packaging Classification: Single module unit with integrated terminal base interface compatibility

Hardware Specifications

Backplane Communication and I/O Density Integration

• Executes deterministic data exchanges over the FLEX I/O backplane bus communication architecture.
• Utilizes firmware flash compatibility protocols to ensure seamless integration across varied controller platforms.
• Features localized I/O density scaling designed to minimize cabinet footprint in high-density automation panels.
• Supports robust rack utilization limits defined by the host adapter communication capacities.

Ordering Information

• 1 x Allen-Bradley 1794-OE4 Analog Output Module
• 1 x Technical Instruction Sheet

Field Installation and Wiring Guidelines

• Mounting Protocol
  • Mount the module securely onto a compatible 1794 terminal block base unit.
  • Ensure the DIN rail is securely fastened and grounded in accordance with local industrial electrical codes.
• Wiring and Grounding
  • Terminate field wiring using shielded twisted-pair cables to mitigate electromagnetic interference.
  • Connect the cable shield to the designated ground terminal at one end only to prevent ground loops.
  • Verify external 24 VDC supply polarity prior to energizing the system terminals.

Frequently Asked Questions

• What is the nominal output current range for this module?

  The module provides an output current terminal range of 4 to 20 mA.

• What is the maximum current load allowed on the voltage output?

  The maximum current load on the voltage output is limited to 3 mA.

• What is the required external power supply voltage?

  The module requires a nominal external DC supply of 24 VDC.

• What are the operational temperature limits for this hardware?

  The operating temperature ranges from 0 to 55 deg C (32 to 131 deg F).

• Does this module support hot-swap capabilities?

  Yes, FLEX I/O modules support removal and insertion under power (RIUP) when installed on compatible terminal bases.

• What is the physical weight of the unit?

  The unit weighs approximately 0.12 kg.

• Where is the country of origin for this specific module?

  The country of origin is the USA, with shipment originating from Xiamen, China.

• What vibration limits can the module withstand during operation?

  The module withstands vibration levels up to 5g at frequencies between 10 to 500 Hz.