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      In Stock
      ESB Bus Coupler Module

      EC402-51

      Spare Part Number

      PNEC402-51

      Product Information:

      ESB Bus Coupler Module

      (for N-IO/FIO, 2-Port)

      The ESB Bus Coupler Module is

      a communication module to

      connect the Field Control Unit

      and the Node Unit for

      ESB Bus via the ESB bus.

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      Technical specifications for

      EC402-51

      0 TECHNICAL PARAMETERS
      • Manufacturer:
        Yokogawa
      • Product Category:
        DCS Systems
      • Spare Part Number:
        EC402-51
      • Estimated shipping dimensions:
        15.2 x 20.1 x 14 cm
      • Weight:
        0.24 kg
      • Tariff Code:
        8537101190
      • Country of origin:
        Japan
      • Place of shipment:
        Xiamen, Fujian, China
      • Product Type:
        ESB Bus Coupler
      • Category Series:
        Centum VP
      • Protection class:
        Standard type with no explosion protection
      • Main Type:
        With ISA Standard G3 option
      • Current consumption:
        0.5 A
      • Series:
        Yokogawa Centum CS - Centum VP
      • Stock:
        30
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      • 03

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      Alternative Names

      EC40251 EC402 51

      Manuals

      PRODUCT & ORDER FAQS

      Questions buyers ask about EC402-51

      • What primary functional purpose does the EC402-51 module serve within Centum VP and Centum CS distributed control system architectures?

        The EC402-51 functions as a high-integrity analog control module, facilitating precise acquisition, conditioning, and output of analog process signals. It acts as the interface between field instrumentation and the DCS, enabling deterministic control and real-time monitoring of industrial processes.

      • How does the signal processing capability of EC402-51 enhance loop performance and measurement fidelity in critical process applications?

        The EC402-51 incorporates high-resolution A/D and D/A conversion, linearization routines, and galvanic isolation, ensuring that input and output signals are accurately represented within the DCS. This enhances control loop stability, minimizes noise susceptibility, and reduces offset drift in continuous process regulation.

      • Why is EC402-51 considered essential for high-reliability and safety-compliant operations in Centum VP/CS systems?

        By providing accurate and isolated analog interfacing, the EC402-51 ensures deterministic control and alarm signaling, critical for compliance with process safety standards. Its robust design guarantees uninterrupted operation in industrial environments with electrical noise, thermal variations, and mechanical vibration.

      • In what environmental conditions is EC402-51 validated to operate with consistent performance?

        The EC402-51 is specified for industrial conditions including wide temperature ranges, humidity, vibration, and electromagnetic interference, ensuring reliable operation in applications such as turbines, compressors, chemical reactors, and refinery processes.

      • How does EC402-51 maintain channel isolation and prevent crosstalk in densely populated DCS racks?

        The EC402-51 incorporates channel-to-channel galvanic isolation, shielded signal paths, and noise rejection circuitry, preserving signal fidelity and ensuring deterministic analog behavior even in racks with multiple high-speed or high-power modules.

      • Why is calibration and linearization critical when deploying EC402-51 in precision regulatory control applications?

        Calibration and linearization of the EC402-51 align the module’s digital representation with the actual physical variable, reducing measurement error, optimizing PID loop performance, and ensuring adherence to process and safety standards in high-accuracy operations.
      All FAQ
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          Moore Disclaimer: Moore Automated's sales automation equipment and related solutions are intended for industrial automation and business operational efficiency improvement purposes only. Product information, technical parameters, and application cases are for reference only and do not constitute an absolute guarantee of performance for any specific industry, scenario, or final application. Actual equipment performance may vary depending on factors such as the usage environment, system integration method, and maintenance conditions. Users should confirm compatibility and safety based on professional technical assessments. Moore Automated assumes no liability for any direct or indirect losses caused by improper use, modification, or failure to operate according to specifications, to the extent permitted by law.

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