Allen-Bradley 1771-A1B I/O Chassis

Allen-Bradley 1771-A1B I/O Chassis

The Allen-Bradley 1771-A1B I/O Chassis is a four-slot Universal I/O chassis for the 1771 family of industrial automation hardware. Rockwell/Allen-Bradley documentation identifies the 1771-A1B as a chassis for 1771 I/O modules, providing the backplane connections required by the modular I/O system. It is a structural and electrical platform within a PLC-5-era control architecture rather than an I/O module itself. The Allen-Bradley 1771-A1B designation is retained as the primary SEO and product-identification concept for this listing. Buyers evaluating a used, surplus, or pre-owned technical component should distinguish the manufacturer’s model specifications from the condition and configuration of the individual unit offered for sale.

Key Features

• Four module slots for the 1771 I/O family.
• Backplane provides communication paths between installed I/O modules and the processor or I/O adapter.
• Back-panel mounting configuration.
• Designed for modular industrial control-system assemblies.

Technical Specifications

• Chassis type:Universal I/O chassis
• I/O slots:4
• Dimensions:315 ? 229 ? 193 mm (12.4 ? 9.0 ? 7.6 in)
• Weight:3.6 kg (8.0 lb)
• Mounting:Back-panel mount
• System:Allen-Bradley 1771 I/O / PLC-5

Applications

The 1771-A1B is relevant to industrial automation maintenance, PLC-5 system servicing, legacy-control-system repair, and replacement of a compatible 1771 chassis. Its four-slot capacity makes it appropriate for installations requiring the A1B chassis format. Before replacement, technicians should verify the existing rack configuration, power-supply arrangement, module placement, grounding, and system documentation. In a technical workflow, the component should be selected and integrated according to the manufacturer’s applicable system documentation and the requirements of the specific method or instrument. Model and part-number verification is especially important for replacement components, optical parts, electronic boards, pumps, rotors, and other configuration-dependent products.

Additional Benefits

• Local pickup available in Houston, Texas.
• Free shipping on select products within the USA.
• International shipping via FedEx available upon request.

Contact us today to request a customized quote and help ensure your laboratory or industrial workflow operates efficiently using Allen-Bradley 1771-A1B I/O Chassis.