Allen-Bradley 1734-IE4C POINT I/O 4-Channel Analog Current Input Module

Product Overview

The Allen-Bradley 1734-IE4C functions as a high-density analog input solution within the POINT I/O family. This module converts analog current signals from field devices—such as pressure transmitters, flow meters, and temperature sensors—into digital values for the controller. It supports both 0–20 mA and 4–20 mA input ranges across four single-ended channels. We supply this unit as 100% Brand New and Original, ensuring your distributed I/O architecture maintains the precise signal calibration and thermal stability required for high-stakes industrial processing.

Technical Specifications

Engineering Advantages

• High-Precision Delta-Sigma Conversion: The 1734-IE4C utilizes Delta-Sigma analog-to-digital conversion. This technology oversamples the input signal to filter out high-frequency noise, delivering an absolute accuracy of 0.1% for sensitive process measurements.

• Extreme Noise Immunity: A common mode rejection ratio of -120 dB allows the module to maintain signal integrity even in environments characterized by heavy electromagnetic interference. This rejection prevents ground loop noise from corrupting the 4-20 mA data stream.

• Space-Optimized High Density: The module packs four independent channels into a ultra-slim POINT I/O form factor. This high-density design significantly reduces the required DIN rail length in overcrowded control cabinets without sacrificing thermal performance.

• Simplified Diagnostics: Integrated status indicators provide immediate visual feedback regarding the module's health and network status. These LEDs allow maintenance teams to identify channel-specific faults or power issues at a glance, shortening troubleshooting windows.

FAQs

• How do I prevent damage during installation? 

• Ensure you set the keyswitch on the 1734-TB or 1734-TBS terminal base to Position 3 before inserting the module. This mechanical interlock prevents the accidental insertion of the wrong module type into a wired base, protecting both the module and the field wiring from overvoltage conditions.

• Does this module require external calibration? 

• The 1734-IE4C comes factory-calibrated to maintain 0.1% full-scale accuracy. Under normal operating conditions, the Delta-Sigma converter compensates for minor thermal drift. For ISO-certified environments, we recommend a yearly verification of the input loop rather than manual adjustment of the module.

• Is this a "New Surplus" or "Open Box" unit? 

• We guarantee this 1734-IE4C is 100% Brand New and Original. It arrives in its original factory-sealed Allen-Bradley packaging. This ensures the unit has never been mounted and carries the full mechanical integrity of the gold-plated backplane connectors.

• What is the significance of the 60 Ohm input impedance? 

• The low 60 Ohm impedance minimizes the voltage drop across the input module. This allows for longer cable runs between the field transmitter and the POINT I/O rack, as it leaves more "voltage overhead" for the transmitter to operate effectively on a standard 24V DC loop.