Vacon NX - Page 23

Technical data vacon • 21
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
4
Figure 2. VACON
®
NX Liquid-Cooled inverter principal block diagram
=
PE
U/T1
V/T2
W/T3
3~
RS 232
+
-
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 for all sizes (CH3 to CH7).
An internal brake chopper belongs to standard equipment in sizes CH3 only, while in all other
sizes it is optional but installed externally.
Control
module
Power
module
Brake
Chopper*
Brake resistor*
3066_uk