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1734-IR2

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Allen-Bradley 1734-IR2 is a two-channel POINT I/O RTD input module for resistance and temperature measurement across supported sensor curves.
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Technical specifications for 1734-IR2

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1734-IR2
  • Product Family:
    Point I/O 1734
  • Product Type:
    POINT I/O 2-Channel RTD Input Module
  • Stock:
    1
  • Inputs:
    2 single-ended non-isolated RTD channels
  • Resistance range:
    0...600 Ω
  • Resolution:
    16 bits; 9.5 mΩ/count
  • Temperature resolution:
    0.03 °C/count for Pt 385 at 25 °C
  • Conversion method:
    Delta Sigma
  • POINTBus current:
    220 mA at 5 V DC
  • Weight:
    0.036 kg
  • Estimated shipping dimensions:
    5.66x1.21x7.75cm
  • Tariff Code:
    8537101190
  • Country of origin:
    Singapore
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications RTD Wiring Integrity Filter and Calibration Product Applications

Features:

  • Temperature acquisition: two RTD or resistance channels
  • Sensor coverage: documented platinum, nickel, and copper curves
  • Diagnostic processing: open-wire detection, alarms, and selectable notch filtering
1734-IR2 converts low-level resistance changes into controller temperature data within a compact POINT I/O slot.

Sensor curve, lead resistance, shielding, filter choice, and non-isolated references all influence the credibility of the final measurement.

A replacement should be accepted with resistance or temperature checks, not only a green channel indicator.

Availability of 1734-IR2 is subject to Apter Power inventory and sourcing confirmation.
Allen-Bradley 1734-IR2 POINT I/O 2-Channel RTD Input Module Manuals and Product Resources
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Allen-Bradley 1734-IR2 POINT I/O 2-Channel RTD Input Module Specs

General

  • ManufacturerAllen-Bradley
  • Model1734-IR2
  • ConditionNew Original ready stock
  • Product FamilyPOINT I/O 1734
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

Protect the resistance measurement

  • Sensor curve: select the exact platinum, nickel, copper, or ohms mode.
  • Leads: document conductor count and terminal assignment.
  • Shield: route low-level wiring away from powered circuits.
  • Open wire: investigate the sensor and every connection before recalibration.

Balance stability and response

  • Notch: choose noise rejection from the measured environment.
  • Response: verify update and step timing against the thermal process.
  • Reference: compare each channel with known resistance or temperature.
  • Record: retain curve, filter, offsets, and acceptance results.

Supported product applications

  • Platinum RTDs: acquire supported Pt temperature curves.
  • Nickel and copper sensors: monitor documented resistance-temperature devices.
  • Resistance measurement: use the 0...600 Ω input mode where approved.
  • Remote temperature I/O: place two RTD channels near the monitored equipment.
Description
1734-IR2 measures two single-ended, non-isolated RTD or resistance inputs in a POINT I/O station. Its 0...600 Ω range and 16-bit conversion support documented platinum, nickel, and copper sensor curves as well as resistance-mode acquisition.

Selectable notch filtering, per-channel alarms, open-wire detection, and factory calibration help 1734-IR2 distinguish sensor faults from process temperature changes. The filter setting changes update and step response, so noise rejection must be balanced against the thermal response expected by the control strategy.

For an 1734-IR2 installation, verify Series C, the supported sensor curve and lead arrangement, terminal-base wiring, shield grounding, range, filter, scaling, and calibration records. The module has no input overvoltage protection, which makes separation from powered signal wiring especially important.
Revisions

Revision Part #

Also known as

1734-IR2 Series B
1734-IR2/B, Series B
1734-IR2 Series C
1734-IR2/C, Series C
Alternative Names
Allen-Bradley 1734-IR2 Rockwell Automation 1734-IR2 AB 1734-IR2 1734IR2 1734 IR2 POINT I/O two-channel RTD input
Technical notes
1734-IR2 has no input overvoltage protection and its two RTD channels are non-isolated. Before connection, confirm Series C, supported sensor curve, lead arrangement, terminal base, shielding, resistance range, notch filter, open-wire action, engineering-unit scaling, and channel calibration. Keep powered conductors separated and validate each sensor with known resistance or temperature evidence.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Why can 1734-IR2 report maximum value after an RTD lead opens?
Open-wire detection forces the data high and sets overrange status; inspect the sensor, terminals, lead continuity, and selected curve before clearing the fault.
How should the notch filter of 1734-IR2 be chosen for a slow thermal process?
Select adequate mains-noise rejection, then confirm the resulting update and step response still supports alarms, control, and the required process trend.
What can make both 1734-IR2 temperatures shift after nearby power wiring changes?
Review shield routing, grounding, common potential, lead resistance, induced noise, terminal condition, and filter settings because the channels are non-isolated.
Can 1734-IR2 safely accept a powered voltage signal on an RTD terminal?
No. The input is intended for supported resistance sensors and has no overvoltage protection; isolate and correct the wiring before reconnecting the module.
Which acceptance test is more useful than a room-temperature check for 1734-IR2?
Compare both channels against at least two known resistance or temperature points that exercise the configured sensor curve and verify open-wire response.
What records should accompany a 1734-IR2 maintenance purchase?
Provide Series, sensor types, terminal base, lead arrangement, filters, project profile, quantity, nameplate photos, destination, and required delivery date.

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