Allen-Bradley 1769-L24ER-QB1B CompactLogix Programmable Automation Controller Configured for controller task execution and Ethernet/IP communication management in CompactLogix control networks, the...
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Configured for controller task execution and Ethernet/IP communication management in CompactLogix control networks, the Allen-Bradley 1769-L24ER-QB1B (1769-L24ER-QB1B Programmable Automation Controller) provides direct processor control and I/O management functions.
Hardware Specifications
Parameter
Specification
Model
1769-L24ER-QB1B
Brand
Allen-Bradley
Origin
United States
Product Type
Programmable Automation Controller
Series
CompactLogix
Weight
0.91 kg (2.00 lbs)
Dimensions
Not specified in provided data
Operating Temp
0 to 60 deg C
Power Consumption
12 W maximum power dissipation
User Memory
750 KB
Controller Tasks
32 tasks, 100 programs per task
Communication Ports
2 Ethernet ports, 1 USB port
Communication Protocols
EtherNet/IP and DeviceNet
Local Expansion Modules
Maximum 4 modules
Current Draw
1.54 A at 5 VDC; 0.95 A at 24 VDC
Isolation Voltage
30 V continuous
Mounting Method
DIN rail or panel mount
Embedded Power Supply
24 VDC isolated input
EtherNet/IP and CompactLogix Control Architecture
The 1769-L24ER-QB1B operates as a CompactLogix controller with integrated Ethernet communication capability. It manages application logic through task-based execution, supporting up to 32 controller tasks with 100 programs assigned to each task.
Furthermore, the controller uses EtherNet/IP communication for industrial network data exchange and provides USB connectivity for local programming and configuration. The integrated Ethernet ports support distributed control architectures while maintaining direct communication between controller resources and connected devices.
The CompactLogix platform supports I/O density scaling through local expansion modules. Therefore, the controller can extend its processing functions with up to 4 local expansion modules according to system requirements.
Frequently Asked Questions
Q: Does the 1769-L24ER-QB1B support redundant controller operation? A: The 1769-L24ER-QB1B does not provide built-in controller redundancy functions. Redundant configurations require compatible system-level architectures and additional hardware evaluation.
Q: What communication interfaces are available on the 1769-L24ER-QB1B? A: The controller provides two Ethernet ports and one USB port. It supports EtherNet/IP communication and local USB-based programming functions.
Q: Can the 1769-L24ER-QB1B use local expansion modules? A: Yes. The controller supports up to 4 local expansion modules within the CompactLogix system configuration.
Field Installation Guidelines
Install the 1769-L24ER-QB1B on a suitable DIN rail or panel mounting surface according to the mechanical installation requirements of the control cabinet.
Use shielded communication cables for Ethernet connections in electrically noisy environments. Connect cable shields according to the site grounding practice to reduce electromagnetic interference.
Keep Ethernet communication wiring separated from high-voltage power conductors and motor drive cables. Maintain proper cabinet airflow to prevent temperature accumulation around the controller.
Before applying power, verify the 24 VDC supply polarity, grounding arrangement, and module installation position. Confirm firmware compatibility between the controller, programming software, and connected CompactLogix system components before commissioning.
