OVERVIEW

Official designation: Allen-Bradley 1745-LP156 (SLC 150, Programmable Controller)

Role/Application: A micro-processor based controller featuring 20 DC current sinking inputs and 12 AC/DC outputs, including 10 Triac and 2 hard contact relays, designed for simple automation tasks.

KEY SPECS SUMMARY

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

Interfaces / Ports: 20 input, 12 output terminals

Indicators: 20 red input status LEDs

Operating Temp: 0 degrees C to 60 degrees C

Platform / Compatibility: SLC 150 Controller

Limit: 25 Volt-Amps maximum power

Lifecycle: Discontinued, Obsolete

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the available memory size and type on the 1745-LP156 controller?

A: The unit has 1200 words of CMOS RAM memory with an optional EEPROM module.

Wiring & Installation:

Q: What is the recommended interconnect cable for connecting this controller to expansion units?

A: The recommended interconnect cable for expansion is the 1745-C2 or 1745-C3 cable.

Troubleshooting & Compatibility:

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

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

Replacement & Upgrades:

Q: What is the Allen-Bradley manufacturer status regarding the availability of the 1745-LP156 unit?

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