1734-IE8C | Allen-Bradley POINT I/O 8-Channel High-Density Analog Current Input Module

Overview

The 1734-IE8C is a high-density analog input module designed for the Allen-Bradley POINT I/O system, providing eight single-ended channels for precise current sensing. This module is an ideal solution for industrial applications requiring a compact footprint without sacrificing channel density. It efficiently converts analog signals from field devices—such as pressure transmitters, flow meters, and temperature sensors—into digital data for processing by Logix-based controllers. The 1734-IE8C supports both 0–20 mA and 4–20 mA input ranges, allowing for versatile integration across various process control environments.

Technical Specifications

• Manufacturer: Allen-Bradley / Rockwell Automation

• Product Series: POINT I/O

• Model Number: 1734-IE8C

• Input Quantity: 8 Channels (Single-ended, Non-isolated)

• Input Signal Range: 0 to 20 mA or 4 to 20 mA

• Resolution: 16-bit (0 to 21 mA corresponds to 0–32767 counts)

• POINTBus Current: 75 mA maximum @ 5V DC

• Power Dissipation: 0.6 Watts @ 28.8V DC maximum

• Thermal Dissipation: 2.0 BTU/hr @ 28.8V DC maximum

• Isolation Voltage: 50V (Continuous), tested at 1500V AC for 60 seconds (Field-to-System)

• Input Impedance: 50 Ohms

• Keyswitch Position: 3

• Terminal Base Requirement: Compatible with 1734-TB, 1734-TBS, 1734-TOP, or 1734-TOPS

• Environmental Rating: Open-style enclosure

• Physical Dimensions: 75.5mm x 12mm x 56mm

• Unit Weight: 0.04 kg (0.088 lbs)

Installation and System Integration

The 1734-IE8C module snaps easily into the POINT I/O terminal base, utilizing a sliding mechanism for secure attachment to adjacent modules. The high-density 8-channel design significantly reduces the required DIN rail space compared to standard 2 or 4-channel modules. It is essential to ensure that the terminal base is correctly wired, as there is no isolation between individual input channels. For applications in high-vibration environments, the 1734-TBS (spring clamp) base is recommended to maintain electrical contact integrity.

Frequently Asked Questions

Does the 1734-IE8C support HART protocol pass-through?No, the 1734-IE8C is a standard analog current input module. If HART communication is required for instrument diagnostics, the 1734-IE8CH (HART-enabled version) should be used instead.

Can I mix 0–20mA and 4–20mA sensors on the same module?Yes, the input range is software-configurable via Studio 5000 or RSLogix 5000. You can define the specific current range for each channel according to the connected field device requirements.

What is the significance of the Keyswitch Position 3?The keyswitch on the terminal base must be set to position 3 before inserting the 1734-IE8C. This mechanical interlock prevents the accidental insertion of a different module type into a base wired for high-density current inputs, protecting the hardware from electrical damage.