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Product Description

The 1769-IF16C is a high-density analog current input module for Allen-Bradley CompactLogix and MicroLogix 1500 systems. It supports 16 single-ended or 8 differential 4–20 mA/0–20 mA inputs, delivering 16-bit resolution and high-accuracy signal conversion. Onboard filtering and compact 1.5-slot design make it ideal for chemical processing, water treatment, and high-density analog applications.


Technical Specifications

Item Specification
Catalog Number 1769-IF16C
Number of Inputs 16 single-ended / 8 differential (software configurable)
Input Range 0–20 mA, 4–20 mA
Resolution 16-bit (unipolar)
Backplane Current Draw 190 mA @ 5.1 V DC, 70 mA @ 24 V DC
ADC Type Sigma-Delta
Input Impedance 249 Ω
Full Scale Error ±0.2% @ 25 °C
Input Filter Programmable low-pass
Common Mode Rejection >100 dB @ 50/60 Hz
Normal Mode Rejection >45 dB @ 50/60 Hz
Isolation Voltage 30 V AC/DC continuous; tested 500 V DC / 1 s
Power Supply Distance Rating 8 modules
Module Width 1.5 slots
Operating Temperature 0–60 °C 

Key Notes

  • Differential wiring improves noise immunity and eliminates ground potential errors

  • Open-circuit detection alerts if a 4–20 mA field wire is broken

  • Backplane powered; field sensors may require external 24V DC supply

  • Designed for high-density analog current monitoring in compact PLC racks

  • Not suitable for voltage signals; use 1769-IF16V or 1769-IF8 for voltage inputs

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