Allen-Bradley 1771-OM Digital AC Output Module

The 1771-OM is an 8-point digital AC output module designed for the Allen-Bradley PLC-5 programmable controller platform. It provides discrete AC output switching for controlling external electrical loads, with a specified operating voltage of 220/240 VAC and a listed capacity of 1320 VA. This module has been discontinued by the manufacturer.

Technical Specifications

Output Function

The 1771-OM provides eight discrete AC output points for PLC-5 control applications. The module converts controller output commands into switched AC signals for connected field loads, supporting on/off control of compatible electrical devices.

The specified 220/240 VAC rating identifies the output voltage class, while the 1320 VA value represents the listed apparent power capacity. Load compatibility should be checked against the actual electrical requirements of the connected equipment and the module's output circuit limitations.

PLC-5 System Application

Designed for the PLC-5 platform, the 1771-OM serves as an output interface between controller logic and external AC-operated equipment. Its eight-point configuration allows multiple discrete control signals to be handled through one module.

When evaluating this module as a replacement for an existing PLC-5 output module, verify the rack configuration, field wiring, output voltage requirements and load characteristics. Similar 1771-series modules should not be assumed to have identical electrical specifications or interchangeability.

Product Availability and Warranty

The 1771-OM is discontinued by the manufacturer. The supplied product listing states that the factory warranty does not apply and includes a Radwell 2-year warranty.

For maintenance and procurement purposes, confirm the exact model number and electrical ratings before ordering, particularly when replacing an installed AC output module.

Frequently Asked Questions

Q: How many output points does the Allen-Bradley 1771-OM have?

A: The 1771-OM has 8 digital AC output points for controlling external electrical loads through a PLC-5 system.

Q: What voltage does the 1771-OM support?

A: The specified output voltage is 220/240 VAC. Connected equipment must be suitable for the applicable AC voltage and module output ratings.

Q: Is the 1771-OM still manufactured?

A: No. The manufacturer has discontinued this model. The supplied listing includes a Radwell 2-year warranty, while the original factory warranty does not apply.