Vacon NX User Manual

Brake chopper unit (NXB) vacon • 203
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12
Liquid cooling
Allowed cooling agents
Drinking water (see specification on page 46)
Water-glycol mixture
See derating specifications, Chapter 5.3.
Volume See Table 19.
Temperature of cooling
agent
0…35 °C input (Ibr); 35…55 ºC: derating required,
see Chapter 5.3 .
Max. temperature rise during circulation 5 °C
No condensation allowed. See Chapter 5.2.1.
Cooling agent flow rates See Table 15.
System max. working
pressure
6 bar
System max. peak
pressure
30 bar
Pressure loss (at nominal
flow)
Varies according to size. See Table 17 .
Table 97. Technical specification for VACON
®
NXB Liquid-Cooled brake chopper unit

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