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dv3
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Inversion Detection
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E5-11 [Encoder Z-Pulse Offset] is set incorrectly.
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Correctly set the value for Δθ to E5-11 as specified by the values on the motor nameplate.
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There is a new encoder or the motor rotation direction changed.
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Do Z Pulse Offset Tuning.
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An external force on the load side rotated the motor.
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Noise interference along the encoder cable.
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Correctly ground the shielded wire of the encoder cable.
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The encoder cable is disconnected or wired incorrectly.
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Examine for wiring errors or disconnected wires in the encoder cable, and repair problems.
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The setting for F1-05 [Encoder 1 Rotation Selection] is the opposite of the direction of motor rotation.
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Correctly connect the motor wiring for each phase (U, V, W).
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The drive incorrectly detected the motor magnetic pole position.
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When U6-57 [PolePolarityDeterVal] < 819, increase n8-84 [Polarity Detection Current]. Consult the motor manufacturer for information about maximum setting values.
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n8-84 [Polarity Detection Current] is too low.
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Increase n8-84 from the default. Consult the motor manufacturer for information about maximum setting values.
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Pole Position Detection failed.
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If you are using an IPM motor, do High Frequency Injection Auto-Tuning.
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The PG option or the encoder on the motor side is damaged.
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Repair the wiring and re-energize the drive, then replace the PG option card or the PG if the problem continues.
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The drive incorrectly detected the motor magnetic pole position.
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When U6-57 [PolePolarityDeterVal] < 819, set n8-84 [Polarity Detection Current > default setting.
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