Vacon NX Service Manual

After market service information
email: service@vacon.com Tel: +358 (0)201 212 575 Fax: +358 (0)204 335 091
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8.8.4. DC link capacitor tests and replacement
8. 8. 4. 1. Test
The condition of each capacitor must be verified when:
• A short circuit has occurred in the main circuit of the IGBT
• A capacitor has short circuited
• Any short circuit between different voltage potentials has occurred in the DC-link
8. 8. 4. 2. Replacement
Replacement of the capacitors, when there is a short circuit in the capacitor.
• All capacitors which are inter connectioned in the same bank between DC+ and DC-.
See Figure 2.
All capacitors should be replaced when the drive has been used for the period of time
specified in chapter “Recommended maintenance”, when considering the load, environ-
ment temperature and humidity.
FIGURE 2. Capacitor replacement.
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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