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Allen-Bradley 1402-LS51 Product Introduction

Sep 10, 2025 Allen-Bradley

Allen‑Bradley 1402-LS51 is a line synchronization module for PLC-5 series programmable logic controllers(PLCS)produced by Allen-Bradley(a brand of Rockwell Automation).The following is a detailed introduction to the module.

Allen-Bradley 1402-LS51

Basic functions

The main function of the Allen‑Bradley 1402-LS51 module is to synchronize the external clock signal with the internal timer of the PLC,thereby ensuring that multiple PLCs can work in coordination.It receives pulse signals from external signal sources such as encoders or photoelectric switches,and converts these pulse signals into a format that the PLC can understand,and then the synchronization signal is distributed to the internal timer of the PLC.

Technical Specifications

Manufacturer:Allen-Bradley(Rockwell Automation)

Model:1402-LS51

Number of slots:2

Current:0 to 5A RMS continuous current,200A RMS 1 second current

Backplane current consumption:1.1A current consumption at 5V DC

Allen-Bradley 1402-LS51

Application scenarios

Allen‑Bradley 1402-LS51 module is suitable for industrial automation applications that require coordination of multiple PLCS,such as

Production line:In an automated production line,multiple PLCS may need to run synchronously to ensure a smooth production process.

Conveying system:In a material conveying system,precise control and scheduling of materials can be achieved by synchronizing multiple PLCS.

Robot:In a robot control system,the synchronization module can ensure the coordinated work of the robot with other equipment to improve production efficiency.

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