GD200A series VFD
Fault tracking
-126-
The method of using power surge to charge for the VFD:
The right selection of power surge depends on the supply power of the VFD. Single phase 220V
AC/2A power surge applied to the VFD with single/three-phase 220V AC as its input voltage. The
VFD with single/three-phase 220V AC as its input voltage can apply Single phase 220V AC/2A
power surge. All DC bus capacitors charge at the same time because there is one rectifier.
High-voltage VFD needs enough voltage (for example, 380V) during charging. The small capacitor
power (2A is enough) can be used because the capacitor nearly does not need current when
charging.
The operation method of VFD charging through resistors (LEDs):
The charging time is at least 60 minutes if charge the DC bus capacitor directly through supply
power. This operation is available on normal temperature and no-load condition and the resistor
should be serially connected in the 3-phase circuits of the power supply(the distance between
resistors of each phase
≥5.5mm):
380V drive device: 1k/100W resistor. LED of 100W can be used when the power voltage is no more
than 380V. But if used, the light may be off or weak during charging.
T
W
Resistor 1K 100W
Ω/
Power supply
AC 380V
VFD
Resistor 1K 100W
Ω/
Resistor 1K 100W
Ω/
R
S
U
V
Figure 8-2 380V charging illustration of the driven device
8.8.3.2 Change electrolytic capacitors
Read and follow the instructions in chapter 1 Safety precautions. Ignoring the
instructions may cause physical injury or death, or damage to the equipment.
Change electrolytic capacitors if the working hours of electrolytic capacitors in the VFD are above
35000. Please contact the local INVT offices or dial our national service hotline (400-700-9997) for
detailed operation.
8.8.4 Power cable
Read and follow the instructions in chapter 1 Safety precautions. Ignoring the
instructions may cause physical injury or death, or damage to the equipment.
1. Stop the drive and disconnect it from the power line. Wait for at least the time designated on the
VFD.
2. Check the tightness of the power cable connections.
3. Restore power.
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