1771-A1B | Allen-Bradley | PLC-5 I/O Chassis Assembly, 4 Slot, Back-panel mount

Description 

The Allen-Bradley 1771-A1B I/O rack is an I/O rack and chassis assembly. It is manufactured in the Allen-Bradley PLC 5 series. The 1771-A1B I/O rack comes with 5 slots for hosting 5 I/O modules. The current rating of this I/O rack and chassis assembly is 16 Amps and the voltage rating is 5.25 Volts DC. The 1771-A1B I/O rack can work with an Allen-Bradley 1771-P7 power supply module.

Technical Specifications 

Information About 1771-A1B

The 1771-A1B is an Allen-Bradley PLC-5 Chassis . The Allen-Bradley 1771-A1B chassis is the backbone of every Allen-Bradley PLC-5 programmable controller system. This chassis provides a communication path between various I/O modules and either the controller or the I/O adapter module. 1771-A1B is a universal and compact enclosure for the processor, power-supply modules, remote and extended-local I/O adapter modules, and I/O modules. 1771-A1B chassis has 4 slots for mounting various modules. The far-left slot of 1771-A1B chassis is reserved for either the processor or adapter module. The other slots in the chassis are compatible with communication modules, I/O modules, and power-supply modules. It is crucial to follow the compatibility tables for each PLC-5/1771 module. Please note the 1771-A1B is part of series B. Power supplies 1771-P1, -P2, -P7 and -PS7 can be mounted on the left side plate of the 1771-A1B chassis.

The 1771-A1B chassis is designed for panel mount installation. 1771-A1B chassis can receive power through processors with integral power supplies that provide 2 to 4 amps, power supply modules that provide 3 to 8 amps, and external power supplies that provide 6.5 to 16 amps. The largest back-plane current for the 1771-A1B is 16 amps operating at 5 Volts DC. The 1771-A1B chassis must be connected to a central ground bus via grounding studs situated on the chassis itself. The chassis’ power supply is configured via the configuration jumper. The jumper has two positions: "N" - position for external power supply, and "Y" - position for power-supply module or processor with and an integral power supply. 1771-A1B chassis cannot be powered with both a power-supply module and an external power supply at the same time.

Manufacturer information

Allen‑Bradley components, integrated control and information solutions are built for demanding industrial applications. We integrate control and information across the enterprise to make you as productive as possible.

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