Allen-Bradley 1771-IAN PLC-5 Digital Input Module

Allen-Bradley 1771-IAN Digital AC/DC Input Module

The 1771-IAN from Allen-Bradley provides reliable 32-point input capability for industrial control systems. This module converts AC signals to processor logic levels with excellent noise immunity.

Technical Specifications

• Brand: Allen-Bradley (Rockwell Automation)
• Model: 1771-IAN
• Series: PLC-5
• Input Type: Digital AC/DC
• Input Points: 32 (4 groups of 8)
• Voltage Rating: 120V AC/DC
• Operating Voltage: 85-138V AC
• Backplane Current: 280 mA
• Signal Delay (On): 10ms (±7ms)
• Signal Delay (Off): 20ms (±15ms)
• Off-State Current: 3.0mA AC max
• Power Dissipation: 7W maximum
• Isolation: 1500V AC optical isolation

Input Performance Characteristics

• 85-138V AC operating voltage range
• 10ms typical turn-on response time
• 20ms typical turn-off response time
• 3.0mA maximum off-state leakage current
• Built-in input filtering for noise reduction

Compatibility & Integration

• Designed for 1771 I/O chassis systems
• Supports ½-slot and 1-slot addressing
• Works with PLC-5 processors
• Includes 1771-WN wiring arm
• Keying bands prevent incorrect installation

Packaging List

• 1x 1771-IAN Digital Input Module
• 1771-WN wiring arm
• Installation documentation
• Mounting hardware
• Shipping via FedEx, UPS, or DHL

Frequently Asked Questions

• What input devices can connect to this module?
  Pushbuttons, limit switches, motor starters, and sensors.
• How many input points does it provide?
  32 input points organized in four groups of eight.
• What is the operating voltage range?
  85-138V AC for reliable operation.
• Does it include status indicators?
  Yes, 32 red LED indicators show input status.
• What protection features does it offer?
  Optical isolation and input filtering for noise protection.