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      1762-IR4

      MicroLogix 1200 RTD/Resistance Input Module
      In Stock
      Ships by Saturday, October 24
      Fast Shipping Available

      Product Describe：

      Allen-Bradley 1762-IR4 is a four-channel MicroLogix 1200 expansion module for RTD and direct resistance measurements. Each channel uses selectable 0.5 mA or 1.0 mA excitation within the configured input mode.

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      Technical specifications Information Technical notes FAQ

      Technical specifications for 1762-IR4

      Technical specifications for 1762-IR4

      • Manufacturer:
        Allen-Bradley
      • Product Category:
        PLC Systems
      • Spare Part Number:
        1762-IR4
      • Estimated shipping dimensions:
        4×8.6×10.8cm
      • Weight:
        0.15 kg
      • Tariff Code:
        8537101190
      • Counliy of origin:
        USA
      • Product family:
        MicroLogix 1200 Bulletin 1762
      • Module role:
        RTD and resistance input expansion module
      • Input channels:
        4
      • Excitation current:
        0.5 mA or 1.0 mA selectable per channel
      • A/D conversion:
        Delta-sigma
      • Input impedance:
        Greater than 10 MΩ
      • Bus current:
        50 mA maximum at 24 V DC
      • Open-circuit detection:
        6 ms
      • Common-mode rejection:
        Greater than 110 dB at 60 Hz with the 10 or 60 Hz filter
      • Autocalibration:
        On channel enable or configuration change; optional every 5 minutes
      • Connection:
        Screw terminals
      • Operating temperature:
        0 to 55 °C
      View as PDF Ask for Quote

      Information

      Information

      Overview Manuals Common Applications Product Precautions
      The module converts four temperature or resistance signals for the MicroLogix controller while maintaining channel-specific sensor, wiring and filter configuration.
      • Four RTD or direct-resistance input channels
      • Selectable 0.5 mA or 1.0 mA excitation per channel
      • Delta-sigma analog-to-digital conversion
      • Automatic calibration on enable or configuration change

      Record each channel's sensor type, wiring method, excitation current, filter and engineering-unit configuration before replacement. Keep low-level RTD conductors segregated from noise sources and preserve shield and grounding practice. After commissioning, compare every channel with a traceable reference and confirm open-circuit diagnostics, raw data and scaled temperature or resistance values.

      Important Notice: Confirm the full 1762-IR4 identity and all four channel configurations before moving the removable terminal block or applying excitation current.

      Allen-Bradley 1762-IR4 Manuals & Downloads
      Allen-Bradley 1762-IR4 Official Technical Reference Excerpt (PDF)Allen-Bradley 1762-IR4 Installation & Commissioning Guide (PDF)

      The first document contains the applicable manufacturer reference pages for this exact product; the second organizes preparation, wiring, diagnostics and handover checks.

      RTD temperature measurement
      Acquires four configured RTD channels for the MicroLogix control program.
      Direct resistance sensing
      Measures compatible resistance inputs under the selected excitation setting.
      Compact process monitoring
      Adds temperature and resistance channels to a Bulletin 1762 expansion system.
      Controlled analog replacement
      Restores saved sensor, wiring, filter and scaling data after module exchange.
      Read the applicable Allen-Bradley instructions before work. Verify 1762-IR4 and the installed system configuration before isolation or replacement.
      1
      Record the 1762-IR4 marking, slot and four channel configurations.
      2
      Place the process and controller in the approved maintenance state.
      3
      Isolate controller power before moving the module or terminal block.
      4
      Identify each sensor type, wiring method and excitation-current setting.
      5
      Inspect low-level conductors, shields, grounds and terminal tightness.
      6
      Restore the saved filter, data format and engineering-unit configuration.
      7
      Check open-circuit diagnostics and raw channel data after power-up.
      8
      Compare all four measurements with a traceable reference before release.

      Technical notes

      Technical notes

      The 1762-IR4 input stage has greater than 10 MΩ input impedance, draws no more than 50 mA from the 24 V DC bus and reports an open circuit within 6 ms. With the 10 or 60 Hz filter, published common-mode rejection exceeds 110 dB at 60 Hz. Autocalibration can also be enabled at five-minute intervals after the initial configuration-based calibration.

      FAQS

      • What role does Allen-Bradley 1762-IR4 perform?
        Allen-Bradley 1762-IR4 performs the documented role of a micrologix 1200 rtd/resistance input module within its approved system architecture.
      • What published value is associated with input channels on 1762-IR4?
        The published input channels for 1762-IR4 is 4.
      • How does the documentation identify excitation current for 1762-IR4?
        Documentation identifies excitation current for 1762-IR4 as 0.5 mA or 1.0 mA selectable per channel.
      • Which value should be checked for a/d conversion when servicing 1762-IR4?
        Service personnel should check a/d conversion against the documented value of Delta-sigma.
      • Where does 1762-IR4 fit in the published system?
        Within the published architecture, 1762-IR4 functions as the micrologix 1200 rtd/resistance input module described for the installed equipment.
      • Why must the complete 1762-IR4 marking be recorded?
        Recording the complete marking prevents a different suffix, rating or hardware configuration from being substituted during maintenance.
      • When 1762-IR4 is replaced, what must technicians verify?
        Technicians must verify the installed input impedance, mating hardware, wiring and approved configuration before energization.
      • Which acceptance check completes work on 1762-IR4?
        Commissioning is complete only after identity, wiring, diagnostics and every affected operating function have passed the approved checks.
      Trusted by 5,000+ plants worldwide | Backed by our vast inventory of top-tier control parts, modules and cards, fast shipments are dispatched to cover your urgent needs. ABOUT US >>
      Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

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