Warnings
▪ Make sure to disconnect the input power while performing
maintenance.
▪ Make sure to perform maintenance after checking the DC Link
capacitor has discharged. Check that the voltage between DC
terminals +, - is below DC 30V. The bus capacitors in the drive main
circuit can still be charged even after the power is turned off.
▪ The correct output voltage of the drive can only be measured by
using an RMS voltage meter. Other voltage meters, including digital
voltage meters, are likely to display incorrect values caused by the
high frequency PWM output voltage of the drive.
Routine Inspection
Make sure to check the following points before handling the drive:
▪ Installation site conditions.
▪ Drive cooling system conditions.
▪ Excessive vibrations or noise in the motor.
▪ Excessive overheating.
▪ Normal output current value on the monitor.
The following table summarizes the maintenance tasks that should be
carried out monthly, annually and every two years:
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