Description

The Allen-Bradley 1771-IFE is an analog input module designed for the PLC-5 programmable controller system. This module provides 16 single-ended or 8 differential analog input channels, offering 12-bit resolution for precise signal processing in industrial control environments. It is engineered to interface with a variety of analog sensors and transmitters, converting field signals into digital data for the PLC processor.

Features

• 16-point analog input configuration
• 12-bit resolution for high-accuracy signal conversion
• Compatible with the Allen-Bradley 1771 I/O chassis
• Supports both single-ended and differential input modes
• Integrated backplane communication for seamless PLC-5 integration

Technical Specifications

Installation Guidelines

• Ensure the PLC-5 chassis power is disconnected before installing or removing the 1771-IFE module to prevent electrical damage.
• The module must be seated firmly into the designated slot of the 1771 I/O chassis and secured with the top and bottom locking tabs.
• Use shielded twisted-pair cabling for analog signal inputs to minimize electromagnetic interference (EMI) and noise.
• Ensure proper grounding of the cable shields at the signal source or the cabinet ground bus, following standard industrial wiring practices.
• Maintain adequate clearance around the chassis to allow for proper airflow and cooling, preventing thermal degradation of internal components.
• Handle the module using ESD-safe practices to protect sensitive electronic circuitry from electrostatic discharge.

FAQ

Is the 1771-IFE still supported by the manufacturer?

No, the 1771-IFE was discontinued by Allen-Bradley on May 31, 2017. It is now primarily available through surplus or secondary market channels for maintenance and legacy system support.

What is the power requirement for this module?

The module draws 0.75 Amps at 5 VDC from the I/O chassis backplane.