Vacon NX User Manual page 18

vacon • 16
1)
External
choke
Mains
*Brake resistor is available for all sizes (CH3 to CH7). An internal brake chopper belongs to standard
equipment in sizes CH3. For CH72 (only 6-pulse) and CH74, it is available as internal option while in
all other sizes it is optional but installed externally.
Figure 1. Vacon NX Liquid-Cooled converter principal block diagram
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4
Power
module
Rectifier
(frequency
converters only)
L1
3~
L2
L3
Charg.res.
Power
Supply
PE
Control
module
Control
Keypad
Control Control
I/O I/O
Brake resistor*
Brake IGBT
Chopper* Inverter
=
2)
=
Measure-
ments
Gate
Drivers
Motor and
Motor
Application
Control
RS 232
Control
ASIC
Control Control
I/O I/O
TECHNICAL DATA
3)
Current
Motor
Sensors
U/T1
V/T2
3~
W/T3
Control
I/O
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