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Active Front End (AFE)
4.2
Active Front End Unit block diagram
Power Module
B+
B-
Power
supply
Fan
Keypad
24-hour support +358 (0)201 212 575 • Email: vacon@vacon.com
IGBT
bridge
Measure-
ments
ASIC
RS-232
Control
I/O
I/O
I/O
slot A
slot B
slot C
Figure 9. NXA block diagram
Driver
Control Module
I/O
I/O
slot D
slot E
vacon • 21
U/T1
V/T2
W/T3
11170.emf
4
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