Allen-Bradley 1756-PLS | ControlLogix Programmable Limit Switch – Resolver Interface, 4x4 I/O, 3-Slot Module

Overview

The Allen-Bradley 1756-PLS is a high-speed programmable limit switch (PLS) module for the ControlLogix platform, designed for motion control and precision timing applications. This 3-slot wide module features a resolver interface and 4 groups of 4 configurable inputs and outputs, providing real-time response based on position feedback.

Ideal for rotary indexing, high-speed packaging, labeling, or press operations, the 1756-PLS enables tight synchronization between machine motion and discrete outputs with microsecond-level accuracy.

Key Features

• Module Type: Programmable Limit Switch (PLS)

• Width: 3-slot wide

• I/O Groups: 4 groups of 4 (total of 16 inputs and 16 outputs)

• Input Type: Resolver-based position feedback

• Output Response Time: Microsecond-level precision

• Connector Type: Three 20-pin interfaces

• High-Speed Timing – Ideal for motion control synchronization

• Fully Integrated with ControlLogix architecture

• Software Configurable – Custom limit switch profiles

Technical Specifications

• Model: 1756-PLS

• Platform: Allen-Bradley ControlLogix

• Inputs/Outputs: 4 groups × 4 channels each

• Feedback Type: Resolver interface

• Slot Width: 3 standard ControlLogix slots

• Connectors: 3 × 20-pin

• Mounting: ControlLogix chassis

• Operating Temp: 0°C to +60°C

• Certifications: UL, CE, c-UL

Applications

• High-Speed Packaging Equipment – Output sync with rotary motion

• Labeling & Printing Machines – Precise cut, mark, or apply control

• Stamping & Press Automation – Limit switch logic based on shaft position

• Motion-Based Triggers – Rotary encoder or resolver-based precision control

Why Choose the 1756-PLS?

• Ultra-fast response based on resolver position feedback

• Flexible and programmable I/O logic per position or machine cycle

• Optimized for high-performance motion control environments

Order Now

In stock and ships worldwide. Ask about resolver cables, terminal connectors, or motion controller compatibility.