Allen Bradley 1746-OW8 SLC 500 Digital Contact Output Module

The 1746-OW8 is an 8-channel relay output digital module belonging to Allen-Bradley’s SLC™ 500 series (product series: Bul. 1746 / 1747), designed for compact PLC systems. It features normally open (NO) relay outputs that support both AC and DC loads, making it highly versatile for industrial control scenarios such as switching motors, solenoids, valves, and indicator lights across diverse power supply environments.

With a wide voltage range compatibility (5–265V AC / 5–125V DC), the module adapts to various industrial power configurations without the need for separate modules for AC and DC loads. It delivers reliable switching capability with high per-channel and total module current ratings, ensuring stable operation of medium-power devices.

The module integrates seamlessly with SLC 500 programmable controllers and supports system expansion with flexible analog and digital I/O card options. It can be upgraded to distributed I/O using an EtherNet I/P Adapter (1747-AENTR), extending its application in networked industrial systems. Backed by continued support from NHP and Rockwell Automation, including lifecycle management strategies, it ensures long-term reliability and maintainability in industrial environments.

Core Specifications: 8 digital output channels, relay output type (normally open, AC/DC compatible).

Electrical Parameters: Voltage range 5–265V AC / 5–125V DC. Per-channel maximum rated current 1.5A; module total maximum rated current 16A.

Environmental Adaptability: Operating temperature 0–60°C; storage temperature -40–85°C. Maximum relative humidity 95% (non-condensing).

System Compatibility: Compatible with Allen-Bradley SLC 500 series controllers (SLC50x). Supports expansion with analog/digital I/O cards and conversion to distributed I/O via 1747-AENTR EtherNet I/P Adapter.

Product Support: Backed by NHP and Rockwell Automation’s technical support and lifecycle management services. Related accessories (replacement power supplies, chassis, communication modules) are available.

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