Allen Bradley 1746-OW16 SLC 500 Relay Output Module

Module Introduction

The Allen Bradley 1746-OW16 is a 16-point relay output module within the SLC 500 I/O family, designed to provide reliable control for AC and DC output loads. This module bridges logic-level signals from the controller to field devices such as solenoids, indicators, and contactors, using mechanical relay outputs for maximum isolation and flexibility across voltage types.

Its ability to switch both AC and DC loads makes it a versatile choice for mixed-control environments in manufacturing, utilities, and process industries. The 1746-OW16 is known for its robust design, high surge tolerance, and field-proven reliability, making it one of the most widely used output modules in SLC 500 systems.

Technical Specifications

Common Industrial Applications

The 1746-OW16 is ideal for applications where electrical isolation, mixed-voltage operation, and high-load switching are required. It is frequently found in:

• Manufacturing Control Panels – operating AC contactors, solenoid valves, and lamps.

• Process Control Systems – driving motor starters and alarms with diverse voltage levels.

• Material Handling Equipment – energizing mechanical relays, gates, and conveyors.

• Batch Processing Units – handling output control for valves and heaters.

• HVAC and Facility Automation – controlling dampers, fans, and lighting circuits.

Its electromechanical design makes it an excellent interface between low-voltage logic circuits and high-power actuators.

Engineering Advantages

• Dual-Voltage Flexibility: Supports both AC and DC loads for universal field compatibility.

• High Isolation: 1500V RMS isolation ensures safety and signal integrity in noisy environments.

• Durable Relay Contacts: Long operational life even under inductive loading conditions.

• Built-In LED Indicators: Simplify troubleshooting and maintenance with clear visual feedback.

• Compact and Modular: Fits seamlessly into SLC 500 chassis, saving space in control enclosures.

• Versatile Load Handling: Capable of switching resistive, inductive, and capacitive loads efficiently.

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