degdrive DGI900 - Voltage-Sensitive Device or Capacitor on Output Side of the AC Drive; Derate at Basic Frequency Setting; Running at over 50 Hz; Thermal Protection of Motor

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The AC drive may encounter the mechanical resonance point at some output frequency,
which can be avoided by setting the skip frequency.
5. Voltage-sensitive device or capacitor on output side of the AC drive
Do not install the capacitor for improving power factor or lightning protection voltage
sensitive resistor on the output side of the AC drive because the output of the AC drive is
PWM wave. Otherwise, the AC drive may suffer transient overcurrent or even be damaged.
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变频调速器
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V
W
KM
6. Derate at Basic frequency setting
When basic frequency is lower than rated frequency, be caution to derate motor avoilding
motor burn.
7. Running at over 50 Hz
If the AC drive is required to run at over 50 Hz, motor viberation and noise will increase.
Consider the capacity of the machine.
8. Thermal protection of motor
AC DRIVE
Fig 1-2. Inverter not allowed to connect capacitor