The 1734-IR2E from Rockwell Automation delivers two high-resolution RTD inputs with 16-bit signed integer data format. This compact module measures only 0.47 inches wide and dissipates just 1 Watt of power. Operators gain real-time status through LEDs for network, module, and input conditions.
Expert Technical Evaluation & Performance Review
The 1734-IR2E achieves a 16-bit input resolution at 2.4 milliohms per count and 0.006 degrees Celsius per count. This enables precise temperature tracking for demanding industrial processes. The module offers an accuracy of 0.1% full scale at 25 degrees Celsius for ohm inputs.
Engineers benefit from an accuracy drift of only 30 ppm per degree Celsius. The module provides a common mode rejection ratio of 120 dB and a normal mode rejection ratio of 100 dB. This ensures reliable readings even in electrically noisy environments.
The device supports four predefined temperature scales: Celsius, Fahrenheit, Kelvin, and Rankine. Users can also select a custom millivolt scale. Built-in alarms detect over-range, under-range, low level, high level, and open wire conditions.
The input step response ranges from 6 to 60 milliseconds. This allows the module to quickly react to temperature changes within its 0 to 220 ohm resistance range. The operating temperature spans -20 to 55 degrees Celsius without external DC power supply.
Step-by-Step Installation Guide
Mount the 1734-IR2E on a DIN rail using a compatible terminal base unit like the 1734-TB or 1734-TOP. Use 22 to 14 AWG shielded thermocouple wire for all input connections. Ensure the keyswitch position matches position 6 on the base.
Connect the two RTD inputs to the terminal base. Monitor module status via the front-panel LEDs. The module automatically produces up to 6 bytes of fault status data without consuming any additional I/O data.
No external power supply is needed because the module draws power directly from the POINT I/O bus. The enclosure type is open, so plan for appropriate cabinet protection. Verify isolation voltage of 50 volts continuous between channels.
The module weighs just 0.08 pounds and measures 2.21 x 0.47 x 2.97 inches. This slim profile allows high-density installation on a DIN rail. Always confirm the wire gauge stays between 22 and 14 AWG for optimal signal integrity.
Logistics & Standard Packaging Details
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