Yaskawa VS-626 MC5 - Manual (Page 245)

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9
Troubleshooting
This chapter describes the fault displays and countermeasure for the
VS-626MC5 and motor problems and countermeasures.
9.1 Protective and Diagnostic Functions 9 - 2 . . . . . . .
9.1.1 Fault Detection 9 - 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.1.2 Minor Fault Detection 9 - 6 . . . . . . . . . . . . . . . . . . . . . . . . . .
9.1.3 Operation Errors 9 - 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2 Troubleshooting 9 - 9 . . . . . . . . . . . . . . . . . . . . . . .
9.2.1 If Constant Constants Cannot Be Set 9 - 9 . . . . . . . . . . . . . . .
9.2.2 If the Motor Does Not Operate 9 - 9 . . . . . . . . . . . . . . . . . . . .
9.2.3 If the Direction of the Motor Rotation is Reversed 9 - 11 . . . . .
9.2.4 If the Motor Does Not Put Out Torque or If Acceleration
is Slow 9 - 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2.5 If the Motor Does Not Operate According to Reference9 - 11
9.2.6 If the Slip Compensation Function Has Low Speed
Precision 9 - 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2.7 If There is Low Speed Control Accuracy at High-speed
Rotation in Open-loop Vector Control Mode 9 - 11 . . . . . . . . .
9.2.8 If Motor Deceleration is Slow 9 - 12 . . . . . . . . . . . . . . . . . . . . .
9.2.9 If the Motor Overheats 9 - 12 . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2.10 If There is Noise When the Inverter is Started or From
an AM Radio 9 - 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2.11 If the Ground Fault Interrupter Operates When the
Inverter is Run 9 - 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2.12 If There is Mechanical Oscillation 9 - 13 . . . . . . . . . . . . . . . .
9.2.13 If the Motor Rotates Even When Inverter Output is
Stopped 9 - 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2.14 If 0 V is Detected When the Fan is Started, or Fan
Stalls 9 - 1 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2.15 If Output Frequency Does Not Rise to Frequency
Reference 9 - 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2.16 Winding change error has occurred 9 - 14 . . . . . . . . . . . . . . .
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