16 • vacon Technical data
Telephone: +358-201-2121 • Fax: +358-201-212 205
4
Figure 4-1. Vacon NXL block diagram
=
=
L1
L2
L3
U
V
W
3~
3~
nxlk57
Mains
Motor
Brake
Chopper*
Measure-
ments
Gate
Drivers
Motor
Control
µP
Motor and
Application
Control
Control
Keypad
Fan
Current
Sensors***
Rectifier
IGBT
Inverter
Brake resistor*
Power
Supply
Control
I/O
1)
2)
3)
Integrated input module**
*Brake chopper belongs to the standard equipment in classes MF3 to MF6, brake resistor is available
as option
**Classes MF4 and bigger have an integrated input module
***This measuring method only in classes MF5 and bigger
Control
module
Power
module
Charg.res.
Option
board
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