You can use two methods to input the PID feedback value to the drive. One method uses a single feedback signal for usual PID control. The other method uses two signals. The difference between those signals sets the deviation.

  • Use a single feedback signal.

    Use Table 1 to select how the feedback signal is input to the drive for PID control.

    Table 1. PID Feedback Input Method

    PID Feedback Input Method

    Setting Value

    MFAI terminal A1

    Set H3-02 = B [PID Feedback].

    MFAI terminal A2

    Set H3-10 = B.

    Pulse train input terminal RP

    Set H6-01 = 1 [PID Feedback Value].

  • Use two signals, and use the difference between those signals as the feedback signal.

    The drive uses two feedback signals, and the difference between those signals becomes the deviation.

    Use Table 2 to select how the second feedback value is input to the drive. The drive calculates the deviation of the second feedback value. Set H3-02 or H3-10 = 16 [Terminal A1 or A2 Function Selection = Differential PID Feedback] to enable the second feedback signal used to calculated the deviation.

    Table 2. PID Differential Feedback Input Method

    PID Differential Feedback Input Method

    Setting Value

    MFAI terminal A1

    Set H3-02 = 16 [Differential PID Feedback].

    MFAI terminal A2

    Set H3-10 = 16.
    Note:

    If you set H3-02 and H3-10 = 16, it will trigger oPE07 [Analog Input Selection Error].