Allen-Bradley GuardLogix 5570 Controller 1756-L72S PAC

Product Overview

The Allen-Bradley 1756-L72S is a powerful GuardLogix 5570 processor module. It belongs to the ControlLogix family from Rockwell Automation. This unit provides 4MB of user memory. It also features 2MB of safety memory. The controller ships with 1GB of non-volatile memory. It supports up to 128,000 digital I/O points. This makes it ideal for large-scale automation tasks.

This PAC uses a safety partner controller, the 1756-L7SP. It ensures high-integrity safety functions. The module has an integrated Energy Storage Module, 1756-ESMCAP. It also supports external storage options. The design is open-style with no enclosure. It draws 800 mA at 5.1 Volts DC. The thermal dissipation is only 8.5 BTU per hour.

Application Scenarios

This controller works well in heavy manufacturing. It is perfect for automotive assembly lines. It also suits packaging and material handling systems. The safety features help protect personnel and equipment. You can use it in chemical processing plants. It also works in oil and gas facilities. The high I/O count supports complex machinery.

Engineers use this module for discrete and process control. It handles up to 31 standard tasks and one safety task. Each task can run 100 programs. Event tasks support all trigger types. This flexibility allows for precise machine control.

Technical Specifications

The module has 0.98 MB of I/O memory. Maximum analog I/O is 4000 points. It offers one built-in USB port for programming. The isolation voltage is 30 Volts continuous. Current draw at 1.2 Volts DC is 5 milliamperes. Power dissipation is 2.5 Watts. The unit weighs about 0.68 kg.

It supports various Energy Storage Modules. These include 1756-ESMCAP, 1756-ESMNSE, and 1756-ESMNRM. The controller is part of the GuardLogix 5570 series. It ensures reliable operation in harsh environments.

Installation & Maintenance Guide

Install the module in a ControlLogix chassis. Use the correct slot location for safety partners. Connect the power supply first. Then insert the module firmly. Do not force it into the slot. Use the USB port for initial setup. Update firmware via ControlFlash software.

Check the Energy Storage Module regularly. Replace it if the LED is red. Keep the area free of dust. Ensure proper ventilation around the chassis. Use only approved cables and accessories. Follow Rockwell’s manual for detailed steps.

Packing List

Each order includes one Allen-Bradley 1756-L72S processor module. It comes with an integrated Energy Storage Module. You will also get a quick start guide. No cables or software are included. The product ships in anti-static packaging. We use FedEx, UPS, or DHL for shipping.