Inovance MD500T75G - Page 290

12. Troubleshooting MD500 User Manual
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Problem Solutions
Loud motor noise
Increase the setting of F0-15 (carrier frequency) properly.
Note that increase in carrier frequency will result in an
increase in the leakage current of the motor.
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Check whether the torque upper limit is small. If yes, please:
ƕ Increase the setting of F2-10 (digital setting of torque upper limit
in speed control mode) in the speed control mode.
ƕ Increase the torque reference (A0-03) in the torque control mode.
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need to set the rated motor voltage (F1-02) and the rated motor frequency (F1-04) correctly.
Problem Solutions
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Overcurrent reported during
large-power motor start
Decrease the setting of F3-01 (torque boost).
Very large current during running
1. Set the rated motor voltage (F1-02) and the rated motor frequency (F1-04) correctly.
2. Decrease the setting of F3-01 (torque boost).
3. Set F3-01 to 0.0% to enable the automatic torque boost function. (When using the
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Loud motor noise
Increase the setting of F0-15 (carrier frequency) properly.
Note that increase in carrier frequency will result in an
increase in the leakage current of the motor.
Low speed accuracy
1. Set F3-01 to 0.0% to enable the automatic torque boost function. (When using the
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Overvoltage reported when
heavy load is suddenly removed
or during deceleration
1. Ensure that F3-21 (overvoltage suppression function selection) to 1
(enabled). Increase the setting of F3-22 (overvoltage stall prevention gain). The
allowable maximum setting here is 40. The default value of F3-22 is 30.
2. Decrease the setting of F3-20 (overvoltage stall prevention voltage). The
allowable minimum setting here is 700 V. The default value of F3-20 is 760 V.
Overcurrent reported when
heavy load is suddenly added
or during acceleration
1. Increase the setting of F3-20 (overcurrent stall prevention gain). The
allowable maximum setting here is 40. The default value of F3-22 is 20.
2. Decrease the setting of F3-18 (Overcurrent stall prevention level). The allowable
minimum setting here is 100%. The default value of F3-18 is 150%.
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