16 • vacon
TECHNICAL DATA
Tel. +358 (0)201 2121 • Fax +358 (0)201 212 205
4
=
=
L1
L2
L3
PE
U
/T1
V
/T2
W
/T3
3~
3~
RS 232
NKW4_1
Mains
Motor
Measure-
ments
Gate
Drivers
Motor
Control
ASIC
Motor and
Application
Control
Control
Keypad
Current
Sensors
Rectifier
(frequency
converters only)
IGBT
Inverter
Power
Supply
Control
I/O
Control
I/O
Control
I/O
Control
I/O
Control
I/O
1)
2)
3)
External
choke
*Brake resistor is available as optional equipment for all sizes (CH3 to CH7).
An internal brake chopper belongs to standard equipment in size CH3 only, while in all other sizes
it is optional and installed externally.
Control
module
Power
module
Charg.res.
Brake
Chopper*
Brake resistor*
Figure 4-1. Vacon NX Liquid-Cooled frequency converter principal block diagram
=
PE
U/T1
V/T2
W/T3
3~
RS 232
NKW8.fh8
+
-
DC supply
Motor
Measure-
ments
Gate
Drivers
Motor
Control
ASIC
Motor and
Application
Control
Control
Keypad
Current
Sensors
IGBT
Inverter
Power
Supply
Control
I/O
Control
I/O
Control
I/O
Control
I/O
Control
I/O
2)
3)
*Brake resistor is available as optional equipment for all sizes (CH3 to CH7).
An internal brake chopper belongs to standard equipment in size CH3 only, while in all other sizes
it is optional and installed externally.
Control
module
Power
module
Brake
Chopper*
Brake resistor*
Figure 4-2. Vacon NX Liquid-Cooled inverter principal block diagram