INVT Goodrive880 Series Hardware Manual page 17

Goodrive880 Series Inverter Unit Hardware Manual
An A6i/A7i inverter unit consists of DC precharge component, bus capacitor, IGBT, and other components.
Figure 2-8 shows the simplified main circuit.
DC+
DC -
No. Name
DC precharge
1
component
2 Bus capacitor
3 Inverter module
The A8i inverter unit consists of DC fuse, bus capacitor, IGBT, output reactor, and other components. Figure
2-9 shows the simplified main circuit.
No. Name
1 DC fuse
Bus
2
capacitor
Inverter
3
module
Output
4
reactor
202311 (V1.0)
Figure 2-8 Main circuit diagram of the A6i and A7i inverter units
K1
R
1
2
Optional accessory to precharge the bus capacitor.
To make the voltage stable by filtering out the AC part from the bus
voltage.
To convert DC current to AC current.
Figure 2-9 Main circuit diagram of the A8i inverter unit
DC+
1
2
DC -
To prevent backend device short circuit from causing machine burndown. This
protective device is located in the cabinet but not included in the unit.
To make the voltage stable by filtering out the AC part from the bus voltage.
To convert DC current to AC current.
To suppress peak voltage to protect the motor and inverter unit.
3
Description
3
Description
Product overview
U
V
W
PE
4
U
V
W
PE
11