OVERVIEW

Official designation: Allen-Bradley 1745-E156 (SLC 150, I/O Expansion Unit)

Role/Application: An I/O expansion unit for the SLC 150 controller, providing 20 DC sourcing digital inputs and 12 AC/DC hard contact relay outputs to scale control applications.

KEY SPECS SUMMARY

Power: 85 to 265V AC or 10 to 30V DC

Interfaces / Ports: 20 input, 12 output terminals

Indicators: 20 input status LEDs

Operating Temp: 0 degrees C to 60 degrees C

Platform / Compatibility: SLC 150 Controller

Limit: 15 Volt-Amps maximum power rating

Lifecycle: Discontinued, Obsolete

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the voltage and current ratings for the hard contact relay outputs?

A: Outputs are rated 10 to 125V DC at 2.5A and 10 to 250V AC with a 3 Amp fuse.

Wiring & Installation:

Q: What interconnect cable is required to connect the 1745-E156 to the processor?

A: The 1745-C3 interconnect cable is used for linking this expansion unit.

Troubleshooting & Compatibility:

Q: What is the operating environment relative humidity limit for the 1745-E156 module?

A: The module is rated for 5 to 95 percent non-condensing relative humidity.

Replacement & Upgrades:

Q: Are there any direct modern replacement models available from the manufacturer for this module?

A: Refer to the latest manufacturer manual for official modern alternatives to this obsolete unit.