INVT Goodrive350-19 Series Operation Manual page 390

Goodrive350-19 Series VFD for Crane
More than 3 years
The method for using a voltage controlled power supply to charge the VFD is described as follows:
The selection of an adjustable power supply depends on the power supply of the VFD. For VFDs with
an incoming voltage of 1PH/3PH 220VAC, you can use a 220VAC/2A voltage regulator. Both 1PH and
3PH VFDs can be charged with a 1PH voltage controlled power supply (connect L+ to R, and N to S
or T). All the DC bus capacitors share one rectifier, and therefore they are all charged.
For VFDs of a high voltage class, ensure that the voltage requirement (for example, 380 V) is met
during charging. Capacitor changing requires little current, and therefore you can use a
small-capacity power supply (2 A is sufficient).
The method for using a resistor (incandescent lamp) to charge the drive is described as follows:
If you directly connect the drive device to a power supply to charge the DC bus capacitor, it needs to
be charged for a minimum of 60 minutes. The charging operation must be performed at a normal
indoor temperature without load, and you must connect a resistor in series mode in the 3PH circuit of
the power supply.
For a 380V drive device, use a resistor of 1 kΩ/100W. If the voltage of the power supply is no higher
than 380 V, you can also use an incandescent lamp of 100W. If an incandescent lamp is used, it may
go off or the light may become very weak.
Power supply
380 V
9.4.2 Electrolytic capacitor replacement
Read chapter 1 Safety precautions carefully and follow the instructions to perform
operations. Ignoring these safety precautions may lead to physical injury or death, or
device damage.
The electrolytic capacitor of a VFD must be replaced if it has been used for more than 35,000 hours.
For details about the replacement, contact the local INVT office.
Use a voltage controlled power supply to charge the VFD:
Charge the VFD at 25% of the rated voltage for 2 hours,
and then charge it at 50% of the rated voltage for 2 hours,
at 75% for another 2 hours,
and finally charge it at 100% of the rated voltage for 2 hours.
Resistor 1 KΩ/100 W
Resistor 1 KΩ/100 W
Resistor 1 KΩ/100 W
Figure 9-2 380V drive device charging circuit example
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Maintenance
R U
S
VFD V
T W