Active Front End (AFE)
vacon • 31
24-hour s358 (0)201 212 575 • Email: [email protected]
4
Figure 18. Wiring diagram of LCL and AFE circuit when used in IT network, or when AFE of other
manufacturer is connected to same transformer secondary supply
4.7.2.2
Removing HF capacitors
If a PWM modulated rectifier from another manufacturer is connected to the same input transform-
er, the HF capacitor must be removed, because the HF capacitors will be filtering the high frequen-
cy disturbances from another manufacturer’s active front ends. It is recommended to always use
own transformers if more than one manufacturer’s AFEs are used.
Figure 19 (for FI9 and FI10) and Figure 20 (for FI13) have a red marking on the lead that has to be
removed from each capacitor if the HF capacitors are not to be used. Removing the lead
disconnects the capacitors from ground potential.
M
X3
X1
X52
X4
X8
X10
DC-
DC+
1
2
-FC2.1
SC FUSES
1
2
-FC2.2
1
2
-FC2.3
-RF4
L1
L2
L3
U
V
W
4
3
2
1
X52
4
1
2
3
X51
PE
-
+
X53
W
PE
B-
B+
V
PE
B-
B+
-TB1
U
PE
B-
B+
X3
X70
H1..H7
1
2
-FC3.1
1
2
-FC3.2
1
2
-FC3.3
1
2
-FC3.4
1
2
-FC3.5
1
2
-FC3.6
GND/PE
GND/PE
GND/PE
GND/PE
1
2
-FCD1
8A
1
2
-FCD2
8A
1
2
3
4
5
6
-FC1
MAINS
BREAKER
I>
I>>
I>
I>>
I>
I>>
-FC1
21
22
61
62
71
72
x1
x2
-R1
x1
x2
-R2
x1
x2
-R3
GND/PE
-X1.1
1
2
3
-X1.1
4
5
6
AP
OF
1L1
1L2
1L3
PE
DC_BUS
7102.emf
Содержание NX Active Front End
Страница 1: ...vacon nx ac drives active front end unit afe user manual ...
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Страница 96: ...7 vacon 94 Appendices Tel 358 0 201 2121 Fax 358 0 201 212 205 Figure 71 Wiring diagram for FI13 11226 pdf ...
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