The diagram above shows the operation waveform related to AP2-50 DC Inj Delay T. The Pre
Heat function performs when the inverter stop mode is set to Free Run and the Pre Heat signal is
supplied. Then, if the inverter operation command is on, the inverter maintains acceleration and a
fixed frequency. If the inverter operation command is off, the motor is in Free Run and the Pre
Heat operations starts after the time amount set in AP2- 50.
If the value for AP2-48 Pre Heat Curr is above the rated motor current value, it is limited by
the rated motor current value.
If the value for AP2-48 Pre Heat Curr is too high or the DC current output time is too long, the
motor may overheat or be damaged and the Inver IOLT may also malfunction. Reduce the DC
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