OVERVIEW

Official designation: Allen-Bradley 1746-OW16 (SLC 500, Digital Contact Output Module)

This digital output module for the SLC 500 series features 16 normally open relay contacts arranged in two isolated groups of eight outputs per common. It handles wide AC/DC voltage loads.

KEY SPECS SUMMARY

Power: 170 mA at 5V DC backplane

Interfaces / Ports: 1746-RT25C terminal block

Indicators: 16 output status LEDs

Operating Temp: 0 to 60 degrees C

Platform / Compatibility: SLC 500 chassis

Limit: 1.5A at 120V AC per point

Lifecycle: Active/Legacy

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum continuous current rating for the entire 1746-OW16 module?

A: The maximum continuous current is 16.0A AC or 8.0A per common.

Wiring & Installation:

Q: How are the 16 relay output channels electrically segregated within the module?

A: The outputs are split into two isolated groups, with eight points sharing one common per group.

Troubleshooting & Compatibility:

Q: What is the typical lifetime of the relay contacts when switching the maximum rated load?

A: The electrical contact life is approximately 100,000 operations at the maximum rated load.

Replacement & Upgrades:

Q: What are the common alternative or replacement options for the 1746-OW16 in a modern system?

A: The ControlLogix or CompactLogix platforms with appropriate 1756 or 5069 relay output modules are alternatives.