Overview
The Allen-Bradley 1746-OW16 is a discrete relay output module engineered for the SLC 500 family of programmable logic controllers. This 16-point digital output module provides electromechanical relay contacts capable of switching both AC and DC loads, making it ideal for applications requiring mixed-voltage environments. The module’s two isolated groups of eight channels enable simultaneous operation of different voltage types without external interposing relays, reducing panel complexity and wiring overhead.
Key Features
- 16 Normally Open Relay Outputs: Supports both AC (5–265 V) and DC (5–125 V) control applications
- Two Isolated Output Groups: Each with eight channels and a dedicated common terminal, allowing one group to operate with AC voltage and the other with DC, or both with the same type of voltage
- Electromechanical Relay Isolation: Providing robust isolation and the ability to switch a wide range of AC and DC voltages
- Single-Slot Installation: Can be installed in any available I/O slot of an SLC 500 chassis, though Slot 0 is reserved for the processor or remote I/O adapter
Technical Specifications
The 1746-OW16 contains 16 outputs, distributed as two groups of eight points per common terminal. The backplane current consumption for the 1746-OW16 is 0.17A at 5V dc and 0.18A at 24V dc, and the module has a continuous current of 16A ac and 8A/Common. Operating temperature ranges from 0-60 degrees Celsius (32-140 degrees Fahrenheit), and storage temperature ranges from -40-85 degrees Celsius (-40-185 degrees Fahrenheit). Signal delay maximum resistive load equals 10ms at ON and OFF. Total heat dissipation for the module is 5.7 Watts.
Typical Applications
The Allen-Bradley 1746-OW16 is well-suited for:
- Industrial equipment control requiring mixed AC/DC voltage switching
- Solenoid, motor, and relay actuation in automated systems
- Process automation with diverse load types and voltage requirements
- Manufacturing systems where panel space and wiring efficiency are critical
Compatibility & Replacements
Compatible With
- Allen-Bradley SLC 500 programmable logic controller platform
- SLC 500 I/O chassis and all available I/O slots (except slot 0)
- Studio 5000 Logix Designer and RSLogix software environments
- Allen-Bradley standard I/O communication protocols
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 1746-OW16 Series D may replace earlier series versions of the same model number when specifications align. Consult the original equipment documentation to confirm direct replacement compatibility.
Works With
- RSLogix 500 programming environment
- Allen-Bradley SLC 500 ladder logic and structured programming
- Standard SLC 500 I/O communication modules and adapters
- External relays and contactors for load switching and protection
