The Mitsubishi QE81WH is a power measurement module designed for the MELSEC-Q Series PLCs, equipped with a single channel for direct sensor connection. This module allows precise power monitoring by interfacing directly with sensors, making it ideal for applications requiring real-time energy consumption data, load monitoring, and overall power efficiency management in industrial settings.

Technical Specifications and Supported Programs

    Channel Configuration: 1 channel, allowing for direct connection to a compatible power sensor.
    Measurement Capabilities: The module supports real-time measurement of various power parameters, including voltage, current, and power consumption, depending on the connected sensor.
    Direct Sensor Connection: The module is designed to interface directly with specific power sensors, reducing the need for intermediary devices and simplifying system integration.
    Isolation: Ensures electrical isolation to protect both the module and connected equipment from potential surges and noise.
    Wiring: Screw terminals provide stable, industrial-grade connections suitable for secure sensor attachment.
    Environmental Conditions:
        Operating Temperature: 0-55°C
        Humidity: 10-90% RH (non-condensing)
        Vibration and Shock Resistance: Compliant with IEC 61131-2 standards, ensuring robustness in industrial applications.

Supported Software: The QE81WH module is compatible with GX Works2 and GX Developer for configuration and monitoring, as well as MELSEC Energy Control software, which allows detailed visualization of power data and energy management.

Commissioning Notes and Recommendations

    Installation and Wiring: Secure the module in the PLC rack and connect the sensor directly to the module according to wiring guidelines.
    Sensor Calibration: Verify sensor calibration and configure the module settings within GX Works2 or GX Developer to match the sensor specifications for accurate measurement.
    Testing and Monitoring: Use MELSEC Energy Control software for detailed monitoring and to verify that real-time data is accurately reflected in the system.
    Maintenance: Regularly inspect and clean terminal connections to ensure stable sensor communication and reliable data acquisition.

By following these guidelines, the QE81WH module will provide accurate and efficient power measurement capabilities, ideal for applications focused on energy management and industrial power monitoring.

>> Mitsubishi QE81WH User manual (pdf)

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