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Allen Bradley 1769-L23E-QB1B CompactLogix Controller

Configured for distributed I/O control and Ethernet-based data communication in CompactLogix platforms, the Allen Bradley 1769-L23E-QB1B (1769-L23E-QB1B Controller) provides direct physical and electrical execution for embedded digital signal processing and controller operations.

Hardware Specifications

Parameter	Specification
Model	1769-L23E-QB1B
Brand	Allen Bradley
Product Type	Controller
Product Line	CompactLogix
Origin	USA
Weight	2.00 lbs (0.91 kg)
Power Consumption	Bus current: 1 A at 5 VDC; 710 mA at 24 VDC
User Memory	512 KB
Communication Interfaces	RS-232 and Ethernet
Digital Inputs	16 inputs
Digital Outputs	16 outputs
Status Indicators	Included
Expansion Capacity	Supports 2 Bulletin 1769 CompactLogix I/O modules
Compatible Battery	1769-BA Battery
Compatible Right End Cap	1769-ECR Right End Cap
Compatible Controller Door	1769-RDQB Door
UPC	612598350766

EtherNet/IP and CompactLogix Backplane Integration

The 1769-L23E-QB1B operates as a CompactLogix controller with integrated communication interfaces for controller-to-device data exchange. It supports Ethernet communication for network connectivity and RS-232 communication for serial device integration. Furthermore, the controller manages local I/O expansion through the 1769 CompactLogix backplane architecture.

The controller supports I/O density scaling through its embedded 16-point digital input and 16-point digital output configuration. Therefore, users can connect additional 1769 expansion modules when the application requires increased signal capacity. The controller also maintains compatibility with CompactLogix firmware and hardware accessories designed for the 1769 platform.

Frequently Asked Questions (FAQ)

Q: Does the 1769-L23E-QB1B support Ethernet communication?
A: Yes. The controller includes an Ethernet communication interface for CompactLogix network connectivity and data exchange.

Q: How many local I/O points are integrated into the controller?
A: The controller provides 16 digital inputs and 16 digital outputs as embedded I/O resources.

Q: What is the controller backplane current requirement?
A: The module requires 1 A bus current at 5 VDC and 710 mA bus current at 24 VDC according to the supplied specifications.

Field Installation Guidelines

• Install the controller within the specified CompactLogix chassis arrangement and verify module positioning before applying power.
• Connect Ethernet and RS-232 communication cables according to industrial wiring practices to reduce electromagnetic interference.
• Separate communication cables from high-voltage power conductors and motor cables to minimize signal disturbance.
• Verify backplane current capacity before adding 1769 expansion modules to prevent power supply overload.
• Install compatible accessories, including the 1769-BA battery, 1769-ECR right end cap, and 1769-RDQB controller door, according to the controller hardware configuration requirements.
• Confirm grounding and shielding practices for communication wiring before commissioning the control system.

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