Yaskawa J1000 Compact Vector Control Drive - Manual (Page 158)

5.5 Auto-Tuning Fault Detection
Auto-Tuning faults are shown below. When the following faults are detected, the fault is
displayed on the digital operator and the motor coasts to a stop. No fault or alarm outputs will
occur
u Auto-Tuning Codes, Causes, and Possible Solutions
Table 5.5 Detailed Auto-Tuning Codes, Causes, and Possible Solutions
Digital Operator Display Error Name
End1 Excessive V/f Setting. Displayed after Auto-Tuning is complete.
Cause Possible Solution
The torque reference exceeded
20% during Auto-Tuning.
• Before Auto-Tuning the drive, verify the information written on the motor
nameplate and enter that data to T1-03 through T1-05.
• Enter proper information to parameters T1-03 to T1-05 and repeat
Auto-Tuning.
• If possible, disconnect the motor from the load and perform Auto-Tuning.
The no-load current exceeded 80%
of the drive rated current during
Auto-Tuning.
Digital Operator Display Fault Name
End2
Motor Iron-Core Saturation Coefficient. Detected only during Rotational
Auto-Tuning and displayed after Auto-Tuning is complete.
Cause Possible Solution
Motor data entered during
Auto-Tuning was incorrect.
• Enter the correct data.
• Restart Auto-Tuning and enter the correct information.
Auto-Tuning calculated values
outside the parameter setting range,
assigning the iron-core saturation
coefficient (E2-07, E2-08) a
temporary value.
• Check and correct faulty motor wiring.
• Disconnect the motor from machine and perform Rotational Auto-Tuning.
Digital Operator Display Fault Name
End3 Rated Current Setting Alarm (displayed after Auto-Tuning is complete)
Cause Possible Solution
• The motor line-to-line
resistance and the motor-rated
current are not consistent with
one another.
• The correct current rating
printed on the nameplate was
not entered into T1-04.
• Check T1-04 setting.
• Check the motor data and repeat Auto-Tuning.
5.5 Auto-Tuning Fault Detection
158 YASKAWA ELECTRIC TOEP C710606 47C YASKAWA AC Drive – V1000 Quick Start Guide