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

Product Description

The Allen Bradley PLC-5 1771-A1B I/O Chassis is a rugged and reliable backplane designed to house up to four I/O modules. Built for industrial control applications, it provides stable mounting, high current capacity, and robust mechanical endurance. This open-style chassis is suitable for standalone installations and ensures dependable operation in demanding environments.

Technical Specifications

• Model / Part Number 1771-A1B

• Manufacturer Allen Bradley (Rockwell Automation)

• Product Line PLC-5 Series

• Product Type I/O Chassis

• Weight 7.75 lbs (3.52 kg)

• Number of Slots 4 module slots

• Backplane Current Capacity 16 A at 5 VDC

• Mounting Method Back panel installation

• Enclosure Type Open style

• Shock Resistance

• Operating: 15 g

• Non-operating: 30 g

• Vibration Resistance 2 g (10–500 Hz)

• Location Standalone use

Application Scenarios

• Housing multiple I/O modules in PLC-5 control systems

• Standalone industrial automation setups requiring compact chassis solutions

• Environments with mechanical vibration and shock where durability is essential

FAQ

Q: How many slots does the 1771-A1B chassis provide?  A: It supports up to 4 I/O modules.

Q: What is the maximum backplane current capacity?  A: 16 A at 5 VDC.

Q: What type of mounting is supported?  A: Back panel mounting.

Q: Is the chassis suitable for standalone installations?  A: Yes, it is designed for standalone use in PLC-5 systems.

Comparison with Similar Models

• 1771-A1B: 4-slot chassis, 16 A backplane current, standalone use

• 1771-A2B: 8-slot chassis, higher capacity for larger systems

• 1771-A3B: 12-slot chassis, extended expansion capability