Allen-Bradley 1756-L61 ControlLogix Processor Module

Product Overview

The Allen-Bradley 1756-L61 is a powerful ControlLogix processor module. It offers 2 MB of user memory. This module also has 478 KB of I/O memory. It supports a maximum of 128,000 I/O points. The 1756-L61 uses a CompactFlash card for nonvolatile storage. This card is the 1784-CF128 model. It provides 128 MB of memory. The module fits into any slot of a 1756 ControlLogix chassis. It has a fast program scan time of 0.08 milliseconds.

Application Scenarios

This controller works well in many industrial settings. Use it for discrete and process control. It is ideal for batch processing applications. The 1756-L61 handles motion control tasks. It also manages high-speed data collection. Factories use it for assembly line automation. It controls packaging machinery effectively. The module works in material handling systems. It is also suitable for oil and gas operations.

Technical Specifications

The 1756-L61 has a fixed memory of 2, 4, or 8 MB. It draws 1.2 Amps from the 5V DC backplane. It needs 14 milliamps from the 24V DC backplane. The module weighs 0.71 pounds. It can handle vibration from 10 to 500 Hertz. It operates in 5 to 95 percent relative humidity. The module uses a 1756-BA1, 1756-BATM, or 1756-BATA battery. It has one RS-232 serial port. It supports DF1 full and half-duplex protocols. It also supports DH-485 and Modbus via logic.

Installation & Maintenance Guide

Install the 1756-L61 in any slot of the chassis. Ensure the chassis is powered off first. Slide the module into the guides. Push it firmly until it locks. Connect the battery for memory backup. Use only approved batteries from the list. Replace the battery when the low battery indicator lights up. The module requires no regular maintenance. Keep the area clean and dry. Check the CompactFlash card periodically for errors.

Packing List

Each unit ships with one 1756-L61 processor module. The package includes a static-safe bag. It also has a documentation sheet. The battery is not included in the box. The CompactFlash card is sold separately. All items are packed securely. Shipping uses FedEx, UPS, or DHL services.