Allen-Bradley 1756-L1M1 ControlLogix Processor Module

Product Overview

The Allen-Bradley 1756-L1M1 is a processor module from the ControlLogix series. It features 500 KB of data and logic memory. This module also includes 150 KB I/O memory and 512 KB expansion memory. It operates on a backplane current of 950 mA at 5.1V. The power rating is 5.33 W. This module works in temperatures from 0 to 60 °C. It stores safely from -40 to 85 °C. The enclosure type is open. It weighs 12.5 oz or 0.35 kg. A replaceable battery like the 1756-BA1 is required. Use the 1756-CP3 serial cable for programming. This module is ideal for complex control tasks.

Application Scenarios

This processor works well in discrete and process control. It fits in manufacturing plants and assembly lines. It also works in material handling systems. The module supports high-speed logic operations. It handles data intensive tasks with ease. Use it in harsh industrial environments. The module withstands vibration up to 2.0 G. It also handles shock up to 30 G peak. This makes it suitable for heavy machinery. The module works with various I/O modules. It integrates easily into existing ControlLogix systems. Many industries use it for reliable automation.

Technical Specifications

The module has a nonvolatile memory type of none. It uses a backplane current of 950 mA at 5.1V. It also uses 20 mA at 24V. The average power dissipation is 4.6 W. The average thermal dissipation is 15.6 BTU/hr. Operating shock is 30 G peak for 11 ms. Storage shock is 50 G peak for 11 ms. Isolation voltage is 30 Volts continuous. It is tested to 500 Volts for 60 seconds. ESD immunity is 6 kV contact discharge. It also has 8 kV air discharge. Radiated RF immunity is 10V/m from 30 MHz to 1000 MHz. EFT/B immunity is +/-4 kV at 2.5 kHz on power ports. Conducted RF immunity is 10Vrms from 150 kHz to 80 MHz. Minimum operating current is 2 milliamps at 10 Volts DC. Maximum operating current is 3.5 milliamps at 30 Volts DC. Maximum input current off-state is 1.5 milliamps. Power dissipation max is 4.1 Watts at 60 degrees Celsius. Backplane current at 5 Volts is 120 milliamps. Backplane current at 24 Volts is 2 milliamps. Removable terminal blocks are 1756-TBCH and 1756-TBS6H.

Installation and Maintenance Guide

Install the module into a ControlLogix chassis. Ensure the backplane is clean and dry. Align the module with the guide slots. Push firmly until it locks in place. Connect the programming cable to the serial port. Use category 3 cable for best results. Replace the battery every few years. Use only the 1756-BA1 battery. Store the module in a cool dry place. Avoid high humidity and extreme heat. Check for loose connections regularly. Clean the module with a dry cloth. Do not use solvents or water. Follow all local safety codes. Use proper ESD protection during handling. This ensures long life and reliability.

Packing List

1 x Allen-Bradley 1756-L1M1 processor module. 1 x battery holder with instructions. 1 x product manual. 1 x quick start guide. No additional accessories are included. Shipping is via FedEx, UPS, or DHL. We ship worldwide from our warehouse. All items are new and in original packaging. Contact us for bulk order discounts.