TD350 Series VFD Safety precautions
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3. After the permanent-magnet synchronous motor is stopped, wait for at least
the time designated on the VFD, and ensure the voltage between "+" and "-"
is lower than 36V.
4. During operation, it is a must to ensure the permanent-magnet synchronous
motor cannot run again by the action of an external load; it is recommended
to install effective external brake device or disconnect the direct electrical
connection between permanent-magnet synchronous motor and the VFD.
Note:
Do not switch on or switch off input power sources of the VFD frequently;
For VFDs that have been stored for a long time, set the capacitance and carry out inspection and
pilot run on the VFD before use.
Close the front cover before running; otherwise, electric shock may occur.
1.4.3 Maintenance and component replacement
Only well-trained and qualified professionals are allowed to perform
maintenance, inspection, and component replacement on the VFD.
Disconnect all the power sources applied to the VFD before terminal wiring,
and wait for at least the time designated on the VFD after disconnecting the
power sources.
Take measures to prevent screws, cables and other conductive matters from
falling into the VFD during maintenance and component replacement.
Note:
Use proper torque to tighten the screws.
Keep the VFD and its parts and components away from combustible materials during
maintenance and component replacement.
Do not carry out insulation voltage-endurance test on the VFD, or measure the control circuits of
the VFD with megameter.
Take proper anti-static measures on the VFD and its internal parts during maintenance and
component replacement.
1.4.4 What to do after Scrapping
The heavy metals inside the VFD should be treated as industrial effluent.
When the life cycle ends, the product should enter the recycling system.
Dispose of it separately at an appropriate collection point instead of placing it in
the normal waste stream.
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