Vacon NX User Manual

12
vacon • 200 Brake chopper unit (NXB)
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
12.3.2 VACON
®
NXB topologies and connection
Figure 107. Brake chopper unit topology
Figure 108. VACON
®
Brake Chopper Unit connections
DC+
DC-
U/T1
V/T2
W/T3
Resistor DC+
DC+
DC-
U/L1
V/L2
Resistor DC+
Resistor DC-
W/L3
NXB (Brake Chopper Unit) + one resistor
is a braking power control unit.
Unnecessary energy is burnt off
NXB (Brake Chopper Unit) + two resistors
is a braking power control unit.
Unnecessary energy is burnt off
11403_uk
DC+
DC-
Resistor
Resistor
W/T3
U/T1
V/T2
11404_uk

Vacon NX Specifications

General

Product Type	AC Drive
Control Method	Scalar Control
Enclosure	IP00, IP21
Communication	Ethernet
Safety	STO (Safe Torque Off)
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overtemperature, Short Circuit
Ambient Temperature Range	-10°C to +50°C (with derating above +40°C)
Cooling Method	Air-cooled, Liquid-cooled