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Allen Bradley PLC 5 1772-LI

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1772-LI

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The Allen Bradley 1772-LI is a processor control module designed for the PLC 5 series. It operates at 24 V DC and is rack-mounted within the PLC chassis for easy integration. This module is characterized by TTL and logic-level signal compatibility, with a program scan time ranging from 7 to 12 milliseconds.

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Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 1772-LI

ManufacturerAllen Bradley
Product TypeProcessor Control Module
Product LinePLC 5
Part Number1772-LI
Weight0.88 lbs (0.40 kg)
UPC662468045583
Operating Voltage24 V DC
Power Supply SourceBackplane
Backplane Current Draw1–1.25 A @ 5 V DC
Signal Voltage LevelsTTL/logic-level signals
Frequency50/60 Hz
Memory TypeRAM (volatile)
Base Memory Capacity2 KB RAM
Program Scan Time7–12 ms
MountingRack-mounted in PLC chassis
Form FactorModular plug-in card
HousingMetal/plastic
Cooling MethodPassive air-cooled via chassis airflow
Operating Temperature0°C to 60°C
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The 1772-LI, part of the Allen Bradley PLC 5 family, functions as a processor control module. This unit requires an operating voltage of 24 V DC and draws power through the backplane. For optimal performance, the backplane current draw is between 1 and 1.25 A at 5 V DC. This processor is designed to work with TTL and logic-level signals, providing compatibility for varied control tasks. Operating frequencies supported by the module include both 50 Hz and 60 Hz, making it versatile for different applications.

In terms of memory, the 1772-LI utilizes volatile RAM, with a base capacity of 2 KB which can accommodate necessary operational data. The program scan time for this module is between 7 to 12 milliseconds, allowing for responsive processing in automation setups. The module is rack-mounted, facilitating integration within the PLC chassis, and features a modular plug-in card form for convenient installation and maintenance.

The housing combines metal and plastic materials, ensuring durability while remaining lightweight. Cooling is achieved through passive air circulation, relying on airflow present within the chassis. The module is operational within a temperature range extending from 0°C to 60°C, suitable for standard industrial environments.