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Fixed lifting platform when starting a speed up on the trip, this is the current very serious phenomenon, the primary inspection machine is not stuck phenomenon, load side is not short circuit, inverter power module is not damaged, starting torque of the motor is not too small, do not drag up.
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During the trip, the movement fixed lifting platform first check: speed up time is not set too short to lengthen the acceleration time and deceleration time is too short; not set, take longer deceleration time; torque compensation (U/F) set is too large, then the resulting low frequency no-load current is too large; the electronic thermal relay setting improper action current setting is too small, resulting in inverter malfunction.