Product Introduction
The Allen-Bradley 1746-OB32 is a digital DC output module designed for the SLC 500 controller platform. This module provides 32 output channels for energizing discrete devices such as pilot lights, solenoids, and small motors. As a replacement or upgrade for older SLC 500 modules, the 1746-OB32 offers high-density output in a compact form factor, fitting into any available slot except slot 0 of a 1746 chassis.
Industry Applications
In manufacturing facilities, the Allen-Bradley 1746-OB32 controls indicator lights and alarms on production lines. For packaging systems, it actuates solenoid valves and small actuators. In material handling, this module drives signal lamps and warning buzzers. Its 24VDC output is ideal for modern control panels that require reliable switching of low-power DC loads.
Compatibility & Integration
The 1746-OB32 integrates seamlessly with SLC 500 fixed and modular hardware. It works with 1746 chassis and uses a compatible wiring system such as the 1746-N3 or 1492 system. This module ships with a removable terminal block (RTB) and includes a 32-LED indicator panel for easy status monitoring. When upgrading from older output modules, the 1746-OB32 provides higher channel density and reliable performance in the same slot configuration.
Selection Guide & Purchasing Advice
When selecting the Allen-Bradley 1746-OB32, verify that your SLC 500 system has an available slot and adequate backplane current. This module draws 5V backplane current, so ensure your power supply can support it. For wiring, use the recommended 1746-N3 or 1492 wiring system to maintain proper termination and enclosure door closure. For reliable sourcing and prompt delivery, contact UBEST Automation at ubest101.myshopify.com.
Troubleshooting & Common Issues
If the module does not power up, check backplane connections and verify the chassis slot is not slot 0. LED indicators on the front panel show channel status; if an LED remains off, confirm the output device is within the operating voltage range. For intermittent operation, inspect wiring at the terminal block for loose connections. The module includes electronic protection, but always ensure output loads do not exceed 0.5A per point to avoid damage.