1746-OW8-1094N-1300

Overview of Allen Bradley 1746-OW8

The Allen Bradley 1746-OW8 is an 8-point digital output module designed for the SLC 500 Programmable Logic Controller (PLC) platform. It features eight normally open (N.O.) relay contact outputs grouped into two sets of four channels per common. This module supports a wide operating voltage range from 5 to 265V AC and 5 to 125V DC, making it versatile for various industrial applications requiring relay contact output. The 1746-OW8 offers reliable performance with fast response times — 60 milliseconds for input and 2.5 milliseconds for output — and a backplane current consumption between 0.85 to 0.9 A at 5V DC. Its compact design allows easy integration within the SLC 500 series system, providing efficient control of output devices with robust electrical isolation. This module is well-suited to operate in demanding environments requiring durable and consistent relay output control.

Key Features of Allen Bradley 1746-OW8

• Eight Normally Open (N.O.) relay contact outputs
• Operating voltage range of 5-265V AC or 5-125V DC
• Two output groups with four channels per common
• Compatible with Allen Bradley SLC 500 PLC systems
• Maximum output current of 1.5 amps per channel at 120 VAC
• Fast signal delay times: 10 ms ON and OFF for resistive loads
• Backplane current draw of approximately 0.85 to 0.9 amps at 5V DC
• Compact and rugged design suitable for industrial environments
• Step response time of 60 ms input and 2.5 ms output

Technical Specs of 1746-OW8

Specification	Details
Module Type	Digital Contact Output Module
Number of Outputs	8
Output Type	Normally Open Relay Contact
Output Voltage	5-265V AC / 5-125V DC
Groups	2 (4 points per group)
Output Current (120 VAC)	1.5 amps per output
Output Current (24 VDC)	1.2 amps per output
Signal Delay (Max Resistive Load)	10 ms ON / 10 ms OFF
Step Response Time	60 ms input / 2.5 ms output
Backplane Current	0.85-0.9 amp at 5V DC
Compatible Series	SLC 500

Applications / Use Case

The Allen Bradley 1746-OW8 is widely used in industrial automation for controlling relay-driven output devices such as solenoids, pilot lights, and small motors within manufacturing and process control systems. Its eight relay outputs enable flexible control schemes and easy grouping of output channels for complex operations. The capability to handle both AC and DC voltages allows it to be employed in diverse environments, including factories, water treatment facilities, and assembly lines. The module’s relay contact outputs provide electrical isolation, which increases system reliability and safety by preventing voltage spikes or electrical noise from affecting the controller. It is particularly effective for applications requiring switching of high voltage or current loads with the protection of the PLC system, making it an essential component in legacy and ongoing automation projects that utilize the Allen Bradley SLC 500 family.

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