Inovance MD500T75G - Page 294

12. Troubleshooting MD500 User Manual
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Operating Panel Display Fault Name
Overvoltage at constant speed
Cause Possible Solution
The overvoltage stall prevention
parameters are set improperly.
Ensure that the overvoltage stall prevention function is enabled (F3-23 = 1).
The setting of overvoltage stall prevention voltage (F3-
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The setting of overvoltage stall prevention frequency gain
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The setting of overvoltage stall prevention max. frequency (F3-
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An external force drives the motor during running. Cancel the external force or install the regen resistor
Operating Panel Display Fault Name
Control power supply fault
Cause Possible Solution
The input voltage is not within the allowable range. $GMXVWWKHLQSXWYROWDJHWRWKHDOORZDEOHUDQJH
Operating Panel Display Fault Name
Undervoltage
Cause Possible Solution
Instantaneous power failure occurs (QDEOHWKHSRZHUGLSULGHWKURXJKIXQFWLRQ)
The AC drive's input voltage is not
within the allowable range.
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The bus voltage is abnormal. Contact the agent or Inovance.
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board or the control board are abnormal.
Contact the agent or Inovance.
Operating Panel Display Fault Name
AC drive overload
Cause Possible Solution
The load is too heavy or locked-
rotor occurs on the motor.
Reduce the load and check the motor and mechanical conditions.
The AC drive size is small. Replace a large drive.
Operating Panel Display Fault Name
Motor overload
Cause Possible Solution
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gain) is set improperly.
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The load is too heavy or locked-
rotor occurs on the motor.
Reduce the load and check the motor and mechanical conditions.
The AC drive size is small. Replace a large drive.
Operating Panel Display Fault Name
Power input phase loss
Cause Possible Solution
The three-phase power input is abnormal. Eliminate external faults.
The drive board, the lightening protection board, the
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Contact the agent or Inovance.
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