SLC 500 1746-OW4 Digital Output Module 4 Relay Contact

Product Overview

The Allen-Bradley 1746-OW4 is a digital contact output module for the SLC 500 series. It provides four normally open relay contacts. This module works with 5-265 Volt AC or 5-125 Volt DC loads. Each output handles up to 1.5 amps at 120 VAC. It also manages 1.2 amps at 24 VDC. The backplane current draw is only 45 milliamps. This unit is ideal for switching industrial loads.

Application Scenarios

Use this module in factory automation systems. It controls motors, valves, and solenoids. It also works well for lighting and alarm systems. The relay outputs isolate the controller from high-power circuits. This design protects your PLC from electrical noise. It is common in packaging and material handling lines.

Technical Specifications

The 1746-OW4 has a step response of 60 ms in and 2.5 ms out. The signal delay for both ON and OFF is 10 ms. It consumes 0.045A on both the 5V DC and 24V DC backplane rails. The minimum load current is 1 mA at 5V DC. Maximum thermal dissipation is 1.9 W. Each point dissipates 0.133 W. The module supports a maximum continuous current of 8A.

Installation & Maintenance Guide

Install the module into any SLC 500 chassis slot. Ensure the backplane power is off. Secure the module with the locking tab. Wire loads to the terminal block. Use copper wire rated for 60°C or higher. Check all connections for tightness. Regularly inspect for dust and debris. Keep the module within its operating temperature range.

Packing List

One Allen-Bradley 1746-OW4 module. One installation manual. No additional accessories are included. Shipping is via FedEx, UPS, or DHL.