Operating the Drive
Page
7-42
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D
8
9
10
11
A
B
C
D
1
2
3
4
5
6
7
E
Drive Power
(kW/Hp)
230V Units
Nominal
400V Units
Nominal
500V Units
Nominal
Size
μ
F
Size
μ
F
Size
μ
F
90/125 F 5600 F 5600
-/150
US/Canada only
F 5600
110/150
G 6600
132/200
G 9900
160/250
G 13500
180/300
G 13500
200/300
H 14850
220/350
H 14850
250/400
H 20250
280/450
H 20250
315/500
J 19800
Simply sum the DC Link capacitance for all the drives on the common DC Link and select the appropriate
pre-charge network.
For example: a system comprising 5 x 37kW, 400V Frame E drives would have a total DC Link
capacitance of:
F
F
C
Total
μ
μ
000
,
18
3000
5
=
×
=
This is less than 19,500
μ
F and thus a 56
Ω
, 200W (CZ463068) resistor will be adequate.