Allen-Bradley 1771-IM | PLC-5 Digital AC/DC Input Module

Product Description

The Allen-Bradley 1771-IM is a rack-mounted digital input module designed for the PLC-5 series. It provides eight input channels capable of handling both AC and DC signals within the 220 V category. Built for reliability, the module ensures consistent signal processing with defined delay times and low leakage current, making it suitable for industrial automation systems requiring precise input monitoring.

Technical Specifications

• Manufacturer Allen-Bradley

• Product Line PLC-5

• Category PLC Modules

• Part Number 1771-IM

• Weight 1.13 lbs (0.51 kg)

• Module Type Digital AC/DC Input Module

• Number of Inputs 8 channels

• Voltage Category 220 V AC/DC

• AC Operating Voltage 184–276 V

• DC Operating Voltage 184–276 V

• Backplane Current 75 mA

• Maximum Off-State Current (AC/DC) 1.0 mA

• Typical AC Signal Delay (On) 20 ms ±6 ms

• Typical DC Signal Delay (On) 10 ms ±4 ms

• Typical AC Signal Delay (Off) 20 ms ±6 ms

• Typical DC Signal Delay (Off) 20 ms ±9 ms

• Wiring Arm 1771-WA

• Mounting Rack-mountable

Application Scenarios

• Monitoring AC/DC input signals in PLC-5 control systems

• Industrial automation requiring reliable digital input processing

• Use in rack-mounted PLC configurations with multiple input modules

FAQ

• Q: How many inputs does the module support?  A: Eight digital inputs.

• Q: What is the operating voltage range?  A: 184–276 V AC/DC.

• Q: Which wiring arm is compatible with this module?  A: The 1771-WA wiring arm.