Allen-Bradley 1771-IFF Analog Input Module | Rockwell Automation

Allen-Bradley 1771-IFF Analog Input Module

The 1771-IFF module from Allen-Bradley helps your PLC 5 system read analog signals. It works with many sensors like temperature and pressure sensors.

Technical Specifications

• Input Types: 16 single-ended or 8 differential
• Voltage Ranges: 0-5V, 1-5V, ±5V, ±10V
• Current Ranges: 4-20mA, 0-20mA, ±20mA
• Resolution: 12 bits + sign
• Update Time: 5ms (8 ch) or 10ms (16 ch)
• Data Format: Binary or BCD (±9999)
• Backplane Current: 750 mA
• Isolation: Optoelectrical isolation
• Power Dissipation: 2.5W max
• Indicators: RUN (green), FAULT (red)

Installation & Wiring

• Fits all 1771 I/O chassis with one slot
• Uses 1771-WG wiring arm for easy connection
• Keying: lower connector (pins 10-12), upper (pins 24-26)
• Designed for harsh industrial environments
• Reduces electrical noise with input filtering

What’s Included

• 1 × 1771-IFF Analog Input Module
• 12-month warranty
• Shipping: FedEx, UPS, or DHL available

FAQ

• What types of signals can the 1771-IFF read?
  It reads voltage (0-5V, 1-5V, ±5V, ±10V) and current (4-20mA, 0-20mA, ±20mA).
• How does the module handle wiring faults?
  It can use a default value set by the user to keep the system safe.
• Can I mix voltage and current inputs?
  Yes, each channel can be set independently for voltage or current.
• What does the red FAULT light indicate?
  It means the module has detected an error or wiring problem.
• Is external power needed for the inputs?
  No, the module gets all needed power from the PLC backplane.