The User Manual of 580 Series General Frequency Converter

5) Vibration of mechanical device

The frequency converter may meet the mechanical resonance point of load device at the point of some output frequency, which may be avoided by setting the hopping frequency parameter in frequency converter.

6) Heat emission and noise of the motor

The output voltage of frequency convertor is PWM wave which contains certain harmonic, therefore, the temperature rise, noise and vibration of the motor will be slightly increased if compared with the operation in power frequency.

7) Pressure sensing device set in output side or the capacitor with improved power factor

The output of frequency converter is PWM wave. If the capacitor with improved power factor or the pressure sensing device for lightning protection is mounted in the output side, the transient overcurrent of frequency converter or any damage to the frequency converter may occur. Please never use.

8) The contactor and other switching devices used for input/output terminal of frequency converter

If the contactor is installed between power supply and the frequency converter, it is not allowed to start or stop the frequency converter by this contactor. If the frequency converter must be started or stopped by the contactor, the interval shall be at least one hour. The frequent charging and discharging may reduce the service life of the capacitor in the frequency converter. If the contactor and other switching devices are installed between the output terminal and the motor, the frequency converter shall be started or stopped when there is no output, or else, the module in the frequency converter may be damaged.