Overview

The Allen-Bradley 1756-OW16I is a ControlLogix discrete output module featuring 16 individually isolated relay outputs. This module is designed to interface with electrical actuators and devices through dry-contact relay outputs, controlling loads such as indicator lights, solenoids, and relays that require voltage isolation and switching flexibility. Each channel provides normally open (N.O.) contact outputs, supporting both DC (5–125V) and AC (10–240V) voltage ranges for versatile control applications.

Key Features

• 16 individually isolated relay output channels with normally open (N.O.) contacts
• Support for both AC (10–240V) and DC (5–125V) voltage ranges
• Maximum output delay of 10 ms for both ON-to-OFF and OFF-to-ON transitions
• 150 mA backplane current draw; 4.4 Watts total backplane power consumption
• Configurable fault responses and scheduled outputs during program and faulted modes
• 250V continuous insulation between output isolation

Technical Specifications

The module delivers robust output current ratings across multiple voltage levels, making it suitable for general-purpose and pilot-duty applications in industrial control systems. Its low power consumption and compact form factor simplify integration into ControlLogix chassis.

Typical Applications

The 1756-OW16I is ideal for process automation, machine control, and facility management systems that require reliable dry-contact switching. Common applications include:

• Indicator light and alarm lamp control
• Solenoid valve and actuator switching
• Motor starter and contactor control
• Discrete event signaling in production environments
• Mixed AC/DC load switching with voltage isolation

Compatibility & Replacements

Compatible With

• ControlLogix chassis-based automation systems
• Rockwell Automation Studio 5000 software and RSLogix environments
• EtherNet/IP industrial networks integrated within ControlLogix platforms
• 1756-compatible removable terminal blocks (RTB): 1756-TBCH and 1756-TBS6H

Replaces / Drop-In Replacement For

Verify compatibility with your system integrator before ordering. The 1756-OW16I is a current production module in the ControlLogix family and remains supported in new installations.

Works With

• Rockwell Automation Studio 5000 (current and legacy versions)
• RSLogix 5000 development environments
• ControlLogix firmware and configuration tools
• EDS (Electronic Data Sheet) files for 1756 discrete I/O and ControlLogix family integration