1745-LP156 | Allen-Bradley SLC 150 Processor Unit

The Allen-Bradley 1745-LP156 is an integrated SLC 150 programmable logic controller processor unit engineered for standalone machine control and small-scale industrial automation applications. Featuring a memory capacity of 12k words, this unit integrates processor logic, power conversion, and fixed I/O channels into a single robust enclosure weighing 1.77 kg.

I/O Configuration and Circuitry

The processor comes equipped with a fixed 32-point I/O configuration designed to support high-voltage AC input signals and flexible output driving:

• AC Inputs: 20 digital input points accepting 85-132 VAC or 170-265 VAC line voltages.
• Solid-State Outputs: 10 Triac outputs suited for switching AC loads directly with reduced mechanical wear.
• Relay Outputs: 2 hard contact relay outputs providing isolated dry contact switching for auxiliary circuits.

This combination allows direct connection to AC sensors and switches without requiring interposing signal converters, while Triac outputs ensure high-cycle reliability for AC control devices.

Technical Specifications

Frequently Asked Questions

Q: What input voltage levels does the Allen-Bradley 1745-LP156 accept? A: The input points accommodate high-voltage AC signals operating within dual ranges of 85-132 VAC or 170-265 VAC.

Q: What type of output circuitry is integrated into the 1745-LP156? A: It includes 10 solid-state Triac outputs intended for AC switching alongside 2 hard contact relay outputs for auxiliary dry-contact isolation.