Product Overview
The 1771-IFEK is a PLC-5 series analog input module designed to convert analog signals from sensors, transducers, and transmitters into digital values for the processor. It accepts up to 8 differential or 16 single-ended inputs, with selectable voltage and current ranges. No external power supply is needed—it draws power from the backplane.
Technical Specifications Breakdown
Key parameters for the 1771-IFEK are listed below for quick reference:
| Feature | Specification |
|---|---|
| Module Type | Analog Input |
| Number of Inputs | 8 Differential Selectable or 16 Single-Ended Selectable |
| Data Format | Natural Binary or BDC Scaling to +/- 9999 |
| Channel Update/Resolution | 18 ms/8 channels; 36 ms/16 channels; 12 bits + sign |
| Voltage Range | 0-5 V dc, 1-5 V dc, +/- 5 V dc, +/- 10 V dc |
| Current Range | 4-20 mA, 0-20 mA, +/- 20 mA |
| Backplane Current | 750 Miliamperes |
| External Power Required | No |
| Wiring Arm | 1771-WG |
| Coating | Conformal Coat |
| Mounting | Rack Mountable |
Industry Applications
Use it with indicators, solenoids, and AC motor starters. The conformal coating extends life in humid or corrosive environments, reducing downtime and replacement costs.
Installation & Setup Guidance
Mount the 1771-IFEK in a single slot of a 1771 I/O chassis. Use the 1771-WG wiring arm for field connections—no need to disconnect wires when replacing the module. Install keying bands between pins 10-12 and 24-26 to ensure only this module is accepted. Configure input ranges and data format via block transfer programming.
Maintenance & Reliability
Periodically inspect the module for signs of moisture or contamination. The conformal coating provides robust protection, but ensure the chassis environment remains within specified limits. The front panel includes a green RUN and red FAULT indicator for quick status checks.
Compatibility & Integration
It uses block transfer to exchange data and configuration words. Digital filtering and optoelectrical isolation reduce electrical noise for stable readings.
Selection Guide & Purchasing Advice
When selecting an analog input module, verify your input signal types (voltage or current) and channel count. The 1771-IFEK covers 0-10V DC, 4-20mA, and more. For availability and lifecycle status, contact AutoDCSTech before ordering. We stock genuine Allen-Bradley parts with fast shipping.
Troubleshooting & Common Issues
If the FAULT LED is lit, check backplane power and wiring connections. Ensure the 1771-WG arm is fully seated. Verify configuration data matches the input signal type. For persistent issues, consult the module documentation.
Availability & Condition at AutoDCSTech
| Part Number | 1771-IFEK |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
