Allen Bradley 1769-L23-QBFC1B CompactLogix Packaged Controller

Products Description

Allen Bradley 1769-L23-QBFC1B CompactLogix Packaged Dual Serial Port Controller IN STOCK

Core Features & Advantages

• Integrated I/O and Communication: The module's standout feature is its "packaged" design, which combines a controller, power supply, 16 discrete inputs, 16 discrete outputs, 4 analog inputs, and 2 analog outputs in a single unit . It further integrates dual serial ports (RS-232/485) for DF1 and DH-485 protocols, as well as a built-in DeviceNet scanner port for network communication . This reduces the need for multiple separate modules and simplifies system architecture.

• Flexible Communication: The dual serial ports allow for connection to a variety of devices, such as PanelView Plus terminals, drives, and other serial equipment, providing flexible integration options . The DeviceNet port enables direct connection to a DeviceNet network for distributed I/O and device control .

• Comprehensive Control Capability: As a Logix controller, it uses the same RSLogix 5000 programming software and tag-based data model as other ControlLogix and CompactLogix controllers . This ensures a consistent programming experience and supports common control functions like ladder logic, structured text, and function block diagrams.

Typical Applications

The 1769-L23-QBFC1B is well-suited for small to medium-sized applications that require a compact, cost-effective solution with integrated I/O and serial communication, including:

• Standalone Machine Control: Controlling packaging machines, labeling equipment, and simple conveyor systems.

• Legacy System Integration: Interfacing with older serial devices or HMIs using the built-in RS-232/485 ports.

• Distributed Control: Acting as a DeviceNet master to coordinate multiple sensors, actuators, and drives on a DeviceNet network .

Frequently Asked Questions (FAQ)

Q1: What is the difference between 1769-L23-QBFC1B and 1769-L23E-QBFC1B?
A: The key difference is the presence of an Ethernet port. The 1769-L23E-QBFC1B includes an integrated EtherNet/IP port, while the 1769-L23-QBFC1B does not . The "QBFC1B" model relies on its dual serial ports and DeviceNet port for communication .

Q2: What programming software is required for this controller?
A: It requires RSLogix 5000 software, version 16 or later . It is not compatible with newer Studio 5000 software without the appropriate firmware.

Q3: What is the maximum backplane current available for expansion modules?
A: The controller provides 800 mA of 5V DC bus current for powering additional 1769 I/O modules connected to it . This is a critical limitation when adding expansion modules or high-power communication cards.

Q4: Does the module support hot-swapping of I/O modules?
A: The 1769 CompactLogix series allows for online insertion and removal (RIUP) of I/O modules, but specific capabilities depend on the controller firmware and RSLinx software version . Refer to the controller's user manual for exact procedures.

Q5: What type of battery does the controller use?
A: The controller uses a 1769-BA or equivalent 3.0V lithium battery (CR14250SE) for real-time clock backup and program retention . The battery has an estimated life that can be monitored via the programming software .

Recommended Models & Related Products

The 1769-L23-QBFC1B is part of the 1769 CompactLogix packaged controller family. Below are key related models and accessories for different application needs:

Choosing the Right Model

• For applications needing Ethernet: The 1769-L23E-QBFC1B is recommended, as it provides the same I/O and features but with an integrated EtherNet/IP port .

• For purely discrete control: The 1769-L23E-QB1B offers digital I/O only, which may be more cost-effective if analog capabilities are not required .

• For expansion beyond the controller's capacity: An external power supply, such as the 1769-PA2, or a power supply module may be required to support additional I/O modules beyond the controller's internal power rating.