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1764-LRP

Allen-Bradley 1764-LRP | MicroLogix 1500 Processor

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  • Manufacturer: Allen-Bradley

  • Product No.: 1764-LRP

  • Product Type: Controller Module

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 200g

  • Shipping port: Xiamen

  • Warranty: 12 months

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Description

Allen-Bradley 1764-LRP MicroLogix 1500 Processor Unit

Product Overview

The 1764-LRP functions as the advanced, high-memory processor unit for the MicroLogix 1500 controller platform. Featuring an expanded 14 KB memory capacity, this unit excels in applications requiring extensive data logging, complex recipe management, and intricate control logic. Its dual-port architecture significantly enhances communication flexibility, allowing simultaneous connection to human-machine interfaces (HMI) and external networking protocols. 

Core Technical Advantages

This LRP (Long-Range Processor) variant distinguishes itself through a dedicated RS-232-C port that supports multiple protocols, including DH-485, Modbus RTU, and ASCII. This versatile connectivity enables the hardware to bridge data between different factory floor devices without requiring additional gateways. The processor manages up to 30 expansion I/O modules, providing a scalable path for machine builders who require more significant localized control than standard micro-controllers. Its low heat dissipation design ensures stable logic execution and long-term hardware reliability in dense control cabinets.

Technical Specifications

Feature Specification
Catalog Number 1764-LRP
User Memory 14 KB (High Capacity)
Communication Ports RS-232 (DH-485, Modbus, DF1)
Compatible Bases 1764-AWA, 1764-BWA, 1764-BXB
Bus Current Draw 380 mA
Protection Rating IP20 Enclosure

Installation & Engineering Guide

To deploy the processor, firmly seat the unit into the 1764 base unit until the side latches engage. Ensure the power to the base unit (100-240 VAC) is disconnected during installation to prevent electrical transients. For communication, utilize the Channel 1 port for high-speed device networking while reserving Channel 0 for local HMI access. It is recommended to maintain at least 50mm of clearance around the base unit for proper convective cooling, even though the processor itself generates minimal heat.

Engineering Advantages

This unit offers the highest memory-to-footprint ratio in its class, making it ideal for retrofitting older systems that require more logic capacity. Its ability to support up to 30 I/O modules allows engineers to consolidate control of large-scale machines into a single, compact processor node. Furthermore, the native Modbus RTU support facilitates cost-effective integration with third-party drives and instrumentation, significantly reducing total system engineering costs.

Technical FAQs

Q1: Can I upgrade a 1764-LSP system to this high-memory unit?
A1: Yes. The unit is physically compatible with all MicroLogix 1500 base units, allowing for a straightforward drop-in replacement to increase memory and port functionality.

Q2: Does this processor support Online Editing?
A2: No. Like most MicroLogix 1500 processors, changes to the user program require the controller to be in Program mode for a download.

Q3: How is the user program protected against power failure?
A3: The unit relies on the internal battery of the MicroLogix base unit or an optional memory module to retain the program and data registers during power outages.

🏷️ Tags: Controller Module
  • Blue

Scalar (V/f)

Vector

AC-powered
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