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Allen-Bradley 1771-A1B I/O Chassis 4-Slot PLC-5 Rack

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SKU: 1770-A1B PLC & Industrial Automation Modules Allen-Bradley (Rockwell)

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Allen-Bradley 1771-A1B I/O Chassis Overview

The Allen-Bradley 1771-A1B is a compact 4-slot I/O chassis engineered for PLC-5 control systems, delivering reliable backplane communication and modular expansion capabilities. This panel-mounted chassis provides a robust foundation for integrating 1771 series I/O modules in industrial automation environments.

Technical Specifications

  • Model: 1771-A1B
  • Slot Configuration: 4 slots for 1771 series modules
  • Mounting Type: Panel-mounted design
  • Backplane: Integrated communication bus
  • Compatibility: PLC-5 processors and 1771 I/O modules
  • Weight: 3.6 kg
  • Origin: Made in USA

Application Scenarios

The 1771-A1B chassis excels in space-constrained installations requiring compact PLC-5 I/O expansion. Ideal applications include:

  • Small-scale manufacturing control panels
  • Remote I/O stations in distributed control systems
  • Retrofit projects upgrading legacy PLC-5 installations
  • Machine control cabinets with limited mounting space
  • Process monitoring systems requiring modular I/O flexibility

Solutions & Benefits

Modular Flexibility: Accommodates up to 4 I/O modules, allowing customized configurations for digital inputs, outputs, analog signals, and specialty modules.

Proven Reliability: Built to Allen-Bradley’s industrial standards, ensuring long-term operation in harsh manufacturing environments with temperature fluctuations and electrical noise.

Easy Integration: Direct compatibility with existing PLC-5 systems eliminates complex programming or adapter requirements, reducing installation time and costs.

Common Questions

Q: Is this chassis compatible with newer ControlLogix modules?
A: No, the 1771-A1B is designed exclusively for 1771 series I/O modules used with PLC-5 systems. For ControlLogix applications, consider 1756 chassis alternatives.

Q: What power supply modules work with this chassis?
A: Compatible power supplies include the 1771-P5E (24V DC) and 1771-P7 (120/220V AC). Power supply selection depends on your I/O module requirements and available facility power.

Q: Can I mix different I/O module types in the same chassis?
A: Yes, the chassis supports any combination of compatible 1771 modules, including digital, analog, and specialty modules, as long as total power consumption stays within supply limits.

Related Products

Product Description Link
1771-A3B 12-Slot I/O Chassis for larger PLC-5 systems View Product
1771-P5E 24V DC Power Supply Module for PLC-5 chassis View Product
1771-IAN AC Input Module for 1771 chassis systems View Product

Warranty & Support

All products from Industrial Control Hub include a comprehensive 12-month warranty covering manufacturing defects and functional failures. Our technical support team provides expert assistance for installation, configuration, and troubleshooting.


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Product Series

ControlLogix 1756

Country of Origin

US

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