Overview
Allen-Bradley 1746-OX8 Series A is a digital contact output module designed for the SLC 500 control platform. This output module comes with 8 high-current relay contact outputs that are individually-isolated. Operating voltage ranges from 5–265 Volt AC or 5–125 Volts DC with 8 N.O. relay contact outputs, intended for individually isolated, high-current relay applications. The module features screw-terminal connections for secure field wiring and is rated for both hazardous and non-hazardous industrial environments.
Key Features
- 8 high-current relay contact outputs that are individually-isolated
- Operating voltage of 5–265 Volt AC or 5–125 Volts DC
- Output range of 5 AMP @ 265 VAC / 5 Amp @ 125 VDC
- Optical isolation, input filtering, and built-in protection from voltage surges
- Complies with UL, CSA, and CE standards and is rated for industrial applications
- Rack-mount design with open-type enclosure for easy installation in SLC 500 chassis
Technical Specifications
The 1746-OX8 is designed for precise control of high-current relay circuits. Operating temperature range is 32 to 140 degrees Fahrenheit; non-operating temperature range is -40 to 185 degrees Fahrenheit. Recommended non-condensing operating humidity range is 5 to 95%. Maximum resistive load signal delay is 10 milliseconds in the on-state. Weight is 0.64 lbs with 50/60 Hz frequency rating.
Typical Applications
- Motor control and pump switching in industrial processes
- Solenoid and valve actuation in packaging and fluid systems
- High-current load switching in manufacturing automation
- Safety-critical relay control applications requiring isolated outputs
- Equipment shutdown and emergency stop circuits
- Legacy SLC 500 system upgrades and maintenance
Compatibility & Replacements
Compatible With
- SLC 500 PLC family controllers (Bulletin 1747)
- SLC 500 I/O chassis with 16-slot and 8-slot racks
- Studio 5000 Logix Designer software (for legacy system documentation)
- Allen-Bradley backplane communication via I/O scanner modules
Replaces / Drop-In Replacement For
- Earlier SLC 500 relay output modules with same pinout
- Direct replacement for worn or failed 1746-OX8 Series A units
- Note: SLC 500 Bulletin numbers are discontinued and customers are encouraged to migrate to CompactLogix 5370 or 5380 control platforms for new designs.
Works With
- Allen-Bradley programming software: RSLogix 500, Studio 5000 Logix Designer
- SLC 500 Input/Output Scanner modules for remote I/O
- Industrial Ethernet and ControlNet gateways (via gateway modules)
- Preventive maintenance and legacy system support tools
