Overview
The Allen-Bradley 1746-OW16 is a 16-point digital relay output module specifically designed for the SLC500 programmable controller platform. This module delivers solid-state relay outputs suitable for controlling industrial equipment across a broad voltage range. With its proven reliability and integration into mature automation systems, the 1746-OW16 remains a trusted choice for engineers maintaining or expanding existing SLC500 installations.
Key Features
- 16 Digital Outputs configured as Normally Open with multiple common points (8 points per common) for flexible circuit configuration
- Solid-State Relay Outputs rated 5–125V DC and 5–265V AC for broad compatibility with industrial loads
- Removable Terminal Blocks enable fast wiring and field maintenance without additional tools
- LED Status Indicators provide visual confirmation of output state
- Fast Signal Response with 1 ms ON delay and 11 ms OFF delay (resistive loads)
- Compact Rack-Mount Form Factor for seamless integration into SLC500 chassis
Technical Specifications
- Module Type: 16-Point Digital Relay Output
- Platform Compatibility: Allen-Bradley SLC500 programmable controllers
- Output Voltage Rating: 5–125V DC / 5–265V AC
- Maximum Load Voltage: 250V AC / 125V DC
- Minimum Load Current: 10 mA @ 5V DC
- Backplane Current: 0.17A @ 5V DC / 0.18A @ 24V DC
- Signal Delay (Resistive Load): ON = 1 ms / OFF = 11 ms
- Off-State Leakage: 2 mA maximum
- Operating Temperature: 0–60°C
- Mounting: Rack-mounted on SLC500 chassis
- Weight: 0.64 lbs
Typical Applications
The 1746-OW16 is widely used in material handling systems, HVAC controls, high-speed assembly operations, process automation, and SCADA installations. Its solid-state relay outputs make it ideal for driving contactors, solenoids, indicator lamps, and other AC/DC loads requiring distributed control logic from a centralized SLC500 processor.
Compatibility & Replacements
Compatible With
- Allen-Bradley SLC500 series programmable controllers (all modular processors)
- SLC500 I/O chassis and backplane systems
- RSLogix 500 programming software for I/O configuration
- Standard 24V DC and 5V DC SLC500 backplane power supplies
Replaces / Drop-In Replacement For
- Allen-Bradley 1746-OW16/B
- Allen-Bradley 1746-OW16/C
- Allen-Bradley 1746-OW16/D (Series D units)
Works With
- RSLogix 500: Full programming and diagnostics support
- Communication Networks: ControlNet, DeviceNet, Universal I/O link (via optional communication interface modules)
- EtherNet/IP: Distributed I/O capability via 1747-AENTR EtherNet/IP adapter
- System Integration: Compatible with Allen-Bradley industrial automation ecosystems including CompactLogix and Flex systems when networked
