Allen‑Bradley 1746‑OW16 SLC500 Relay Output Module

Allen‑Bradley 1746‑OW16 is a 16‑channel relay‑type digital output module for SLC500 PLC system. It receives logic commands from SLC CPU, drives external field loads via mechanical relay contacts, supports both AC and DC field‑side loads for general industrial on‑off control applications. 

This single‑slot SLC rack‑mount module provides isolated relay outputs with LED channel‑status indication, supports common‑group contact wiring. It is widely used as replacement spare‑part for on‑site troubleshooting, equipment maintenance and automation system retrofit projects.

Main Specifications

• Brand: Allen‑Bradley (Rockwell Automation)
• Model: 1746‑OW16
• Product Type: SLC500 16‑Channel Relay Digital Output Module
• Channel Quantity: 16 isolated relay output channels
• Contact Rating: 5‑120VAC / 5‑24VDC per channel resistive load
• Backplane Supply: 5VDC from SLC500 rack backplane
• Indicator: On‑board LED for each channel status display
• Mounting: Single‑slot installation within SLC500 chassis rack
• Compatibility: SLC 500 series PLC hardware platform
• Operating Temperature Range: 0℃ ~ +60℃
• Application: Spare‑part replacement for industrial PLC automation equipment

Core Functions

• Receive output logic instructions from SLC500 CPU through rack backplane bus
• Mechanical relay contacts switch on‑off state to drive solenoid valves, contactors, indicator lamps and other field actuators
• Relay‑contact electrical isolation separates PLC internal circuit from field‑side load circuit
• Per‑channel LED indicators intuitively show output on‑off status for on‑site commissioning and fault checking
• Group‑common wiring design simplifies field wiring work for multi‑channel discrete‑control scenarios
• Adapt to both AC and DC field load types, flexible for different kinds of field‑device driving requirements
• Standard single‑slot rack‑mount structure supports quick disassembly and convenient on‑site spare‑part replacement
• Industrial‑grade module hardware ensures stable discrete‑output performance for long‑time continuous‑running production‑site conditions

Application Scenarios

• Factory production‑line SLC500 PLC control cabinet discrete‑output configuration projects
• Packaging, material‑handling and general‑machinery equipment on‑off control supporting projects
• On‑site relay output module fault replacement and daily SLC500 PLC system maintenance work
• Legacy automation equipment renovation for expanding discrete‑control output channels
• Legacy Allen‑Bradley SLC500 series spare‑parts replacement scenarios
• Spare‑parts inventory backup for factory workshop SLC‑series PLC control cabinets
• General‑industry PLC cabinet discrete‑output hardware maintenance supporting engineering projects