1746-OBP16 | Allen-Bradley SLC 500 Digital DC Output Module Supplier

What Happens When Your System Needs Reliable High-Current DC Outputs?

Industrial automation often demands precise control of high-current loads. The 1746-OBP16 from Allen-Bradley meets this need with sixteen sourcing outputs and integrated fuse protection. As part of the trusted SLC 500 series, this digital DC output module ensures stable operation in demanding environments.

Core Specs of the 1746-OBP16

Every technical detail of the 1746-OBP16 is designed for performance. Below are the key specifications from the manufacturer:

• Manufacturer: Rockwell Automation
• Brand: Allen-Bradley
• Part Number: 1746-OBP16
• Series: SLC 500
• Module Type: Digital DC Output Module
• Outputs: 16 (sourcing configuration)
• Voltage Range: 20.4-26.4 Volts DC
• Current per Output: 1.5 or 1 amp
• Current per Module: 6.4 amps
• Backplane Current (5 Volts): 250 milliamps
• Applications: High Current
• Fuse Protection: Yes
• Step Response: 60 milliseconds in, 2.5 milliseconds out
• Compatible Fuse: Littelfuse #322010,10A or #332010,10A
• Fuse Kit Part Number: 1746-F8
• Recommended Signal Wires: Max 2 mm² (14 AWG)

The module occupies a single slot in an SLC 500 chassis and works with both fixed and modular hardware.

Unique Performance Insight: Integrated Fuse Protection

A standout feature of the 1746-OBP16 is its integrated electronic fuse. This fuse protects each channel from short circuits and overloads. When a fault occurs, the E-FEUSE LED illuminates on the front panel. Other channels continue to operate because protection is individual per channel. After the error is corrected, removing and reapplying system power resets the module automatically. This design reduces downtime and simplifies maintenance.

Installation and Setup Guide

Installing the 1746-OBP16 is straightforward. First, ensure the SLC 500 chassis power is off. Insert the module into any available single slot. Use signal wires up to 2 mm² (14 AWG) for connections. For fuse replacement, pull the module from the chassis. Replace the fuse with Littelfuse #322010,10A or #332010,10A. The fuse kit (1746-F8) includes five fuses to maintain UL/CSA ratings. Always follow the manufacturer's manual for detailed wiring instructions.

Maintenance and Reliability Tips

Regular inspection of the 1746-OBP16 ensures long service life. Check the E-FEUSE LED periodically for fault indications. Keep the module free from dust and moisture. Verify that the backplane current (250 milliamps at 5 Volts) remains within limits. Because the module handles high currents, ensure proper ventilation in the enclosure. Routine checks help prevent unexpected failures and extend module reliability.

Compatibility and Integration

The 1746-OBP16 integrates seamlessly with SLC 500 systems. It works with both fixed and modular chassis configurations. The module communicates via the backplane, requiring 250 milliamps at 5 Volts. For system expansion, it pairs with other SLC 500 I/O modules. Refer to the official Allen-Bradley documentation for specific controller compatibility.