Allen-Bradley 1769-L24ER-QBFC1B PLC

Overview

The Allen-Bradley 1769-L24ER-QBFC1B is a versatile Programmable Logic Controller (PLC) from the CompactLogix series, designed for small to medium automation applications. This controller integrates various features, including I/O channels, communication ports, and expandable memory, all within a compact and robust design.

With 32 I/O channels and two Ethernet communication ports, the 1769-L24ER-QBFC1B enables efficient data processing and flexible network communication. It also supports multiple communication protocols such as ASCII, DH485, and DF1, ensuring compatibility with various industrial systems.

Key Features

Integrated I/O: Includes 16 24V DC digital inputs and 16 24V DC digital outputs.
Expandable Memory: Comes with 768Kbytes of embedded memory and supports 1GB or 2GB external memory cards for further storage.
Ethernet and USB Ports: Equipped with two Ethernet I/P ports, one USB port, and one RS232 port for diverse connectivity options.
Processor Capacity: Supports up to 32 tasks with each task capable of running 100 continuous programs.
Power Supply: Operates with a 24V DC isolated power supply.

Technical Specifications

Parameter	Details
Part Number	1769-L24ER-QBFC1B
Manufacturer	Allen-Bradley
Product Type	Programmable Logic Controller
Product Line	CompactLogix
Weight	0.91 kg (2.00 lbs)
Module Type	Processor Module
Communication Ports	2 Ethernet I/P, 1 USB, 1 RS232
Memory	768Kbytes (expandable via SD card)
I/O Channels	16 Digital Inputs, 16 Digital Outputs
Power Supply	24V DC (isolated)
Supported Protocols	ASCII, DH485, DF1, Ethernet
No. of Tasks	Up to 32
Max Programs per Task	100
Max Axes over Ethernet	2 axes
Input Voltage Range	10V – 28.8V DC
Output Voltage Range	20.4V – 26.4V DC
Current Draw at 5V	1.54A
Current Draw at 24V	0.95A
Current per Point at 24V	0.83A (40°C) / 0.5A (60°C)
Max Voltage Drop per Output	1V at 1A (on-state)
Mounting	DIN Rail

Description

The Allen-Bradley 1769-L24ER-QBFC1B is designed to offer enhanced functionality for a variety of industrial automation applications. This controller is equipped with two Ethernet ports that support Device Level Ring (DLR) topology, allowing reliable network communication in ring networks. It also features a RS232 serial port for local communication, supporting multiple industrial protocols like ASCII, DH485, and DF1.

With 16 DC inputs and 16 DC outputs, this controller offers flexible I/O options to handle a wide range of input/output devices. The 1769-L24ER-QBFC1B is capable of running up to 32 tasks simultaneously, making it ideal for multi-process control. Additionally, its expandable memory allows users to accommodate large programs and complex processes, supporting 1GB or 2GB SD cards.

The controller’s compact design (4.53 x 4.13 x 4.65 inches) and robust features, including built-in LEDs for status monitoring, make it an excellent choice for applications where space and performance are critical.

Applications

The Allen-Bradley 1769-L24ER-QBFC1B is commonly used in small to medium-scale automation applications where reliable control and communication are essential. It is ideal for machine control, process monitoring, and remote monitoring in various industrial sectors.