Vacon NX User Manual

Brake chopper unit (NXB) vacon • 211
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
12
*. Only valid for NX_8 brake chopper units.
Table 109. Maximum resistance
Chassis NXB unit
Thermal
current [Ith]
Maximum resistance at DC-link voltages [ohm]
836 876 916 956 1004 1051 1099 1136 *
Ch61 NXB 0170_6 170 24.6 25.8 26.9 28.1 29.5 30.9 32.3 33.4
Ch61 NXB 0208_6 208 20.1 21.1 22.0 23.0 24.1 25.3 26.4 27.3
Ch62 NXB 0261_6 261 16.0 16.8 17.5 18.3 19.2 20.1 21.1 21.8
Ch62 NXB 0325_6 325 12.9 13.5 14.1 14.7 15.4 16.2 16.9 17.5
Ch62 NXB 0385_6 385 10.9 11.4 11.9 12.4 13.0 13.7 14.3 14.8
Ch62 NXB 0416_6 416 10.1 10.5 11.0 11.5 12.1 12.6 13.2 13.7
Ch62 NXB 0460_6 460 9.1 9.5 10.0 10.4 10.9 11.4 11.9 12.3
Ch62 NXB 0502_6 502 8.3 8.7 9.1 9.5 10.0 10.5 10.9 11.3

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