Lenze 8200 Frequency inverters - Manual (Page 255)

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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