Product Overview

The 1771-IFE is an analog input module from Allen-Bradley. It works with PLC5 programmable logic controllers. You can use it in any 1771 I/O chassis. This module gives you sixteen single-ended or eight differential input channels. Each channel supports voltage and current signals. You can choose ranges like 1 to 5V, 0 to 5V, -5 to +5V, -10 to +10V, and 0 to 10V for voltage. For current, options include 4 to 20mA, 0 to 20mA, and -20 to +20mA. The module uses 12-bit resolution with an extra sign bit for bipolar ranges. It converts analog signals to digital data for the PLC processor.

This module uses block transfer programming. It handles communication with the PLC processor. If input communication fails, the module responds automatically. It uses the default user configuration. This gives a predictable and safe response. It limits the extent of any fault. The front panel has a green RUN light and a red FAULT light. Optoelectrical isolation protects system circuits from electrical noise.

Application Scenarios

The 1771-IFE is ideal for measuring process variables. Common applications include temperature, pressure, level, and flow. Other uses cover speed, viscosity, turbidity, pH, vibration, and displacement. Any parameter that can be represented by voltage or current signals works. You can use it in industrial automation, manufacturing, and process control. It fits well in legacy PLC5 systems. It offers flexibility with multiple input ranges. You can configure it for single-ended or differential inputs. This makes it suitable for both simple and complex applications.

Technical Specifications

Below are the key technical details for the 1771-IFE:

• Manufacturer: Rockwell Automation
• Brand: Allen-Bradley
• Part Number: 1771-IFE
• I/O: 8 Differential or 16 Single-Ended
• Module Type: Analog Input
• Chassis Compatibility: Any 1771 chassis
• Channel Update Time: 18 ms for 8 channels; 36 ms for 16 channels
• Data Format: Natural Binary or BCD scaling to +/-9999
• Resolution: 12-bit binary; 12 bits plus sign on bipolar ranges
• Accuracy: 0.1% of full scale range at 25°C
• External Power: Not required
• Backplane Current: 750 mA
• Voltage Range: -10 to 10 Volts DC
• Current Range: -20 to 20 mA
• Wiring Arm: 1771-WG
• Slot Width: 1 Slot
• Power Dissipation: 2.5 Watts
• Thermal Dissipation: 8.52 BTU/hour

Installation & Maintenance Guide

Install the 1771-IFE in any 1771 I/O chassis. It requires one slot. Use keying bands between pins 10 and 12 for the lower connector and pins 24 and 26 for the upper connector. This ensures correct installation. The module comes with a 1771-WG wiring arm. You can replace the module without disconnecting wiring. This simplifies maintenance. The module has input filtering to reduce electrical noise. It also includes optoelectrical isolation for protection. Keep the chassis clean and free from dust. Ensure proper ventilation to avoid overheating. Check the RUN and FAULT indicators during operation. If the FAULT light is on, check the configuration and wiring.

Packing List

The package includes:

• 1 x Allen-Bradley 1771-IFE Analog Input Module
• 1 x 1771-WG Wiring Arm
• Installation manual (if available)

Shipping methods: FedEx, UPS, or DHL. Contact us for more details.