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The phase wiring between the drive and motor is incorrect.
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Examine the wiring between the drive and motor.
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Connect drive output terminals U/T1, V/T2, and W/T3 in the correct sequence to agree with motor terminals U, V, and W.
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Switch two motor cables U, V, and W to reverse motor direction.
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The forward direction for the motor is set incorrectly.
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Connect drive output terminals U/T1, V/T2, and W/T3 in the correct sequence to agree with motor terminals U, V, and W.
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Switch two motor cables U, V, and W to reverse motor direction.
Figure 1. Forward Rotating Motor
Note:
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For Yaskawa motors, the forward direction is counterclockwise when looking from the motor shaft side.
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Refer to the motor specifications, and make sure that the forward rotation direction is correct for the application. The forward rotation direction of motors can be different for different motor manufacturers and types.
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The signal connections for forward run and reverse run on the drive control circuit terminals and control panel side are incorrect.
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Correctly wire the control circuit.
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The motor is running at almost 0 Hz and the Speed Search estimated the speed to be in the opposite direction.
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Set b3-14 = 0 [Bi-directional Speed Search = Disabled], then the drive will only do speed search in the specified direction.
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