Trouble Shooting
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the buffer resistor. If the light is on, the fault may be lies in the switching power
supply. Please ask for support.
7.2.2 Power supply air switch trips off when power on:
z Inspect whether the input power supply is grounded or short circuit. Please solve
the problem.
z Inspect whether the rectify bridge has been burnt or not. If it is damaged, ask for
support.
7.2.3 Motor doesn’t move after inverter running:
z Inspect if there is balanced three-phase output among U, V, W. If yes, then motor
could be damaged, or mechanically locked. Please solve it.
z If the output is unbalanced or lost, the inverter drive board or the output module
may be damaged, ask for support..
7.2.4 Inverter displays normally when power on, but switch at the input side trips
when running:
z Inspect whether the output side of inverter is short circuit. If yes, ask for support.
z Inspect whether ground fault exists. If yes, solve it.
z If trip happens occasionally and the distance between motor and inverter is too far,
it is recommended to install output AC reactor.
8. MAINTENANCE
● Maintenance must be performed according to designated maintenance
methods.
● Maintenance, inspection and replacement of parts must be performed only by
authorized personnel.
● After turning off the main circuit power supply, waiting for 10 minutes before
performance maintenance or inspection.
● DO NOT directly touch components or devices of PCB board. Otherwise
inverter can be damaged by electrostatic.
● After maintenance, all screws must be tightened.
WARNING
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