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OVERVIEW
Official designation: Allen-Bradley 1762-IR4 (MicroLogix Series, RTD/Resistance Input Module)
Role/Application: This 4-channel specialty expansion module acquires temperature data from RTDs or resistance values up to 3000 Ohm. It is compatible with MicroLogix 1100, 1200, and 1400 controllers for precise industrial temperature monitoring.
KEY SPECS SUMMARY
Power: 40 mA at 5V DC bus
Interfaces / Ports: Removable screw connection
Indicators: Power diagnostic LED
Operating Temp: 0 to 55 degrees C
Platform / Compatibility: MicroLogix 1100/1200/1400
Limit: Input to system isolation 707V DC
Lifecycle: Current Product
FREQUENTLY ASKED QUESTIONS
Technical Specifications:
Q: What are the input current excitation values provided for the RTD and resistance sensors?
A: The module provides either 0.5 mA or 1.0 mA excitation current to the connected sensors.
Wiring & Installation:
Q: What are the installation requirements regarding spacing for the 1762-IR4 module?
A: Maintain a minimum spacing of 50.8 mm (2 in.) on all sides for adequate ventilation.
Troubleshooting & Compatibility:
Q: What is the input-to-system isolation test voltage for the RTD/Resistance module?
A: The module is type tested for input group to system isolation at 707V DC for 1 minute.
Replacement & Upgrades:
Q: Is this MicroLogix RTD/Resistance module currently available for new installations?
A: Yes, the 1762-IR4 module is currently listed as an existing product in the MicroLogix line.
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