The Mitsubishi QD62E is a high-speed counter module for the MELSEC-Q Series PLCs, offering two independent channels that support counting frequencies up to 200kHz. With compatibility for 5V, 12V, and 24V DC inputs and equipped with a source transistor output, this module is ideal for applications requiring precise pulse counting and quick response, such as in material handling, conveyor systems, and high-speed sorting.

Technical Specifications and Supported Programs

    Channels: 2 high-speed counter channels, enabling dual independent pulse counting operations.
    Input Frequency: Maximum 200kHz, ensuring accuracy in high-speed counting applications.
    Voltage Compatibility: Accepts DC input signals at 5V, 12V, and 24V, suitable for various sensor types.
    Output Type: Source transistor output, designed for reliable signal transmission and fast response to counted inputs.
    Counting Modes: Supports multiple counting modes, including up and down counting, suitable for a variety of industrial counting needs.
    Isolation: Optical isolation for each channel to protect against electrical noise and ensure stable operation.
    Wiring: Screw terminals for secure and durable connections, built for industrial environments.
    Environmental Conditions:
        Operating Temperature: 0-55°C
        Humidity: 10-90% RH (non-condensing)
        Vibration and Shock Resistance: Compliant with IEC 61131-2 standards for resilience in demanding conditions.

Supported Programming Software: The QD62E module is compatible with GX Works2 and GX Developer, which facilitate configuration, monitoring, and diagnostics of high-speed counting parameters.

Commissioning Notes and Recommendations

    Installation and Wiring: Install the module securely in the PLC rack and connect devices or sensors as specified, according to the appropriate input voltage level (5V, 12V, or 24V DC). Proper grounding minimizes electrical noise.
    Parameter Configuration: Use GX Works2 or GX Developer to configure counting parameters, including frequency, count direction, and reset conditions.
    Output Testing: Test the source transistor output under operational conditions to ensure timely and accurate responses.
    Maintenance: Regularly inspect connections and clean terminals to maintain consistent output and prevent connectivity issues.

By adhering to these setup and maintenance steps, the QD62E module provides precise, high-speed counting with responsive output, making it ideal for automation tasks that require efficient and accurate pulse counting in industrial environments.

>> Mitsubishi QD62E User manual (pdf)

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