Introduction

The Allen Bradley 1746-OB8/A Digital DC Output Module provides 8-channel digital output for SLC 500 systems, delivering reliable and precise control of relays, solenoids, and other DC-powered devices. Its compact, industrial-grade construction ensures dependable performance in demanding environments. Fully compatible with SLC 500 CPUs and I/O modules, the OB8/A module simplifies system design, reduces wiring complexity, and supports diagnostics for efficient maintenance and operation.

Technical Specifications

Parameter	Specification
Module Type	Digital DC Output Module
Model Number	1746-OB8/A
Dimensions (L×W×H)	144.5 × 34.6 × 130.18 mm
Weight	0.181 kg / 0.40 lb
Functionality	8-channel DC output for SLC 500 systems
Channels	8 digital output channels
Output Type	DC
Mounting	Allen Bradley SLC 500 Rack
Operating Temperature	0°C to 55 °C
Storage Temperature	-20°C to 70 °C
Compatibility	Allen Bradley SLC 500 Controllers & I/O modules

Applications

The Allen Bradley 1746-OB8/A Digital DC Output Module is designed for efficient and reliable digital output in SLC 500 systems. It is commonly used in industrial automation, manufacturing, and process control environments to operate DC-powered devices such as relays, solenoids, and indicator lights. Its 8-channel output provides precise and dependable control for medium-scale industrial applications.

Advantages

8 Independent Channels: Provides robust DC output control for multiple devices.
Compact Design: 144.5 × 34.6 × 130.18 mm, weighing 0.181 kg / 0.40 lb, fits standard SLC 500 racks.
Reliable Switching: Ensures accurate on/off operation for industrial devices.
Seamless Integration: Fully compatible with Allen Bradley SLC 500 CPUs and I/O modules.
Easy Installation and Maintenance: Terminal-based design allows quick wiring, inspection, and replacement.

Technical FAQs

How many channels does the 1746-OB8/A support?
8 independent digital DC output channels.
What type of devices can it drive?
Relays, solenoids, indicator lights, and other DC-powered devices.
Is it suitable for harsh industrial environments?
Yes, designed to withstand vibration, electrical noise, and temperature fluctuations.
What is the typical output voltage?
Compatible with standard 24V DC industrial control circuits.
Does it provide diagnostic feedback?
Yes, supports channel status monitoring and fault detection.
Is programming required?
Minimal configuration is needed through the SLC 500 CPU programming software.
Can it replace multiple smaller output modules?
Yes, depending on the system layout, it can consolidate outputs.
What is the switching speed?
Optimized for rapid on/off operation suitable for industrial applications.
Is maintenance complicated?
No, modular design ensures quick replacement and easy inspection.
Does it fit standard SLC 500 racks?
Yes, fully compatible with standard mounting configurations.