2 selection example for 4 drives, 1 supply only via controllers, Selection example for 4 drives – Lenze 8200 Frequency inverters User Manual
Page 255: Supply only via controllers, Network of several drives
Network of several drives
8200SHB0199
10-12
10.3.2
Selection example for 4 drives
10.3.2.1 Supply only via controllers
Drive data
Drive
Controller type
Motor P
M
Efficiency
Drive 1
9328
22 kW
Drive 2
9325
5.5 kW
h = 0.9
Drive 3
8214
3.0 kW
h = 0.9
Drive 4
8212
1.5 kW
1. Determine DC-power requirements:
- Power loss P
loss
TAB 1.
3
'&
L
Æ
3
0L
®
3
9L
É
3
'&
N:
N:
N:
N:
N:
N:
3
'&
N:
2. Determine first input:
- P
DC100%
TAB 1.
9328
9325
8214
8212
P
DC100%
32.7 kW
7.2 kW
4.1 kW
2.0 kW
- First input selected is 9328.
- Additionally required input powers are:
34.573 kW - 32.7 kW = 1.875 kW
3. Determine the second input:
- Input power for 9325/8214/8212 from ”9328/8222” in TAB 1.
9325
8214
8212
P
DC2
5.4 kW
3.2 kW
not possible
- The power of 8214 is not sufficient.
4. Result:
- This drive network must be connected to the three-phase AC mains via
the controllers 9328 and 8214.
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