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RT-SVX096A-EN
Variable Frequency Drive (VFD)
If installed in an appropriate environment, the VFD requires
very little maintenance.
Important: Do not perform wiring, inspection, or repair
operations while the power is on. Before
starting work, be sure to switch off the power
of all machines. After the power is switched
off, there is residual voltage in the capacitor
inside the inverter. It is necessary to confirm
that the main circuit voltage has dropped to a
safe level, and to wait for 5 minutes before
performing related operations to avoid
personal accidents.
Replacing the Cooling Fan
When replacing the cooling fan, use the original fan. To
purchase the original fan, contact the agent where you
purchased the product or the sales department of our
company. There are several models equipped with multiple
cooling fans in the inverter.
In order to maximize the service life of the product, all fans
must be replaced at the same time. Replacement of other
components require very strict maintenance technology
and product familiarity, and must undergo strict testing
before use after replacement.
It is not recommended that users replace other internal
components by themselves. For replacement, contact the
agent where you purchased the product or the sales
department of our company.
Reforming the Capacitors
The drive DC link capacitors must be reformed (re-aged) if
the drive is non-operational for more than one year.
Without reforming, capacitors may get damaged when the
drive starts to operate. In order to prevent the capacitors
from deteriorating, please energize them for at least 1 hour
per year.
If there is no power for more than two years, use the
adjustable power supply to gradually increase the voltage
from 0V to the rated voltage of the inverter within 2 minutes
to 3 minutes, and then activate the main circuit electrolytic
capacitor (no-load power on for more than 1 hour).
During subsequent operation, perform normal wiring and
confirm that there is no abnormality of the inverter,
overcurrent, motor vibration, or speed change.
Replacing a Fuse
When replacing a fuse, use the original fuse. See the
following table for the parameters of a fuse.
Fuses must be strictly tested before use after replacement.
It is not recommended that users replace fuses by
themselves. Contact the agent where you purchased the
product or the sales department of our company to
purchase the original fuse or for replacement.
Table 21. Relevant parameters of fuse
Voltage Diameter Length Rated
Working
Voltage
Rated
Working
Current
208/230V 38mm 10.3mm 500VDC 30A
460V 38mm 10.3mm 500VDC 30A+2A
Figure 18. Fuse
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