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Note:
(1) 150% of over-current stall action current means 1.5 times of rated current of frequency converter;
(2) The carrier frequency of high-power motor is below 2kHz. Due to the increase of pulsating current, the
wave by wave current limiting response precedes the over-current stall to prevent action starting,
resulting in insufficient torque. In this case, please reduce the over-current stall to prevent action
current.
Overvoltage stall action voltage
Overvoltage stall suppression enable
Overvoltage stall suppression
frequency gain
Over voltage stall suppression voltage
gain
Over voltage stall maximum rise
frequency limit
When the motor speed is higher than the output speed, the motor is in the state of power generation.
In order to suppress the continuous rise of bus voltage, the inverter will adjust the output frequency to consume
more electric energy. The actual deceleration time will be automatically extended to avoid tripping. If the actual
deceleration time can not meet the requirements, the over excitation gain can be appropriately increased.
Group P5 overvoltage stall parameters are valid in VF mode, and stall overcurrent parameters are both valid in
VF and vector mode.
If it is found that the actual acceleration time of the motor is much longer than the acceleration time under
V/F control mode, the following measures can be taken:
(1) If the target frequency is less than 2 times the rated frequency, the over-current stall action current of P5-19
can be increased by 10% each time. If the set value of P5-19 exceeds 170%, it is easy to cause the frequency
inverter to alarm ERR10 (overload).
(2) If the target frequency is 3 times or more than 4 times the rated frequency, during the rapid acceleration
process, Motor stall is likely to occur, which can adjust P5-22 over-current stall action current compensation
coefficient, and the set value is 100%.
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