Allen-Bradley 1756-OB16I ControlLogix 16 Point D/O Module

Description 

The Allen-Bradley 1756-OB16I is a ControlLogix digital output module designed for reliable DC control applications. It provides 16 individually isolated sourcing outputs operating within a voltage range of 10 to 30 VDC. This module is widely used in industrial automation systems where output isolation and configurable fault handling are required.

Technical Specifications 

Information About 1756-OB16I

The 1756-OB16I is part of the Allen-Bradley ControlLogix family, developed to deliver flexible, high-performance output control. It supports 16 isolated outputs, each rated for up to 2 A at 30 °C or 1 A at 60 °C, with a maximum module current of 8 A at 30 °C and 4 A at 60 °C. Outputs are configurable for fault and program modes, with options including hold last state, ON, or OFF. The module operates with fast response times, featuring 1 ms OFF-to-ON and 2 ms ON-to-OFF switching. It requires a 1756 chassis and compatible RTBs such as the 1756-TBCH or 1756-TBS6H for wiring. The 1756-OB16I provides diagnostic LEDs for status indication, supports direct-connect or rack-optimized communication formats, and synchronizes scheduled outputs with the ControlLogix system clock. It also offers surge protection of up to 4 A for 10 ms per point, repeatable every 2 seconds. With industrial certifications including UL, CSA, CE, and ATEX, the module is suitable for standard and hazardous location applications.

Key Features:

• Outputs: 16 individually isolated DC sourcing outputs.

• Voltage Range: Operates at 10–30 VDC.

• Output Current: Up to 2 A per point at 30 °C, 1 A at 60 °C.

• Module Current: 8 A maximum at 30 °C, 4 A at 60 °C.

• Switching Speed: 1 ms ON delay, 2 ms OFF delay.

• Surge Protection: 4 A for 10 ms, repeatable every 2 seconds.

• Isolation: Channel-to-channel and user-to-system isolation tested to 250 V AC continuous.

• Diagnostics: LED indicators for module and point status.

• Wiring: Requires 36-position RTB (1756-TBCH or 1756-TBS6H).

• Certifications: UL, CSA, CE, ATEX for industrial and hazardous environments.

The 1756-OB16I delivers the flexibility, isolation, and reliability required for demanding industrial digital output applications.

Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.