Auto-Tuning Fault Detection; Auto-Tuning Fault Detection; Auto-Tuning Codes, Causes, And Possible Solutions - YASKAWA A1000 Series Quick Start Manual

5.5

Auto-Tuning Fault Detection

Auto-Tuning faults in this section are displayed on the digital operator and will cause the motor to coast to a stop. Auto-Tuning
faults do not trigger a multi-function digital output set for fault or alarm output.
An Endo error on the digital operator display indicates Auto-Tuning has successfully completed with discrepancies in the
calculations. Restart Auto-Tuning after fixing the cause of the Endo error.
The drive may be used in the application if no cause can be identified despite the existence of an Endo error.
An Ero error indicates that Auto-Tuning has not completed successfully. Check for the cause of the error using the tables in
this section, and perform Auto-Tuning again after fixing the cause.
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Auto-Tuning Codes, Causes, and Possible Solutions

Digital Operator Display
End1
Cause
The torque reference exceeded 20% during
Auto-Tuning.
The results from Auto-Tuning the no-load
current exceeded 80%.
Digital Operator Display
End2
Cause
Motor data entered during Auto-Tuning
was incorrect.
Results from Auto-Tuning are outside the
parameter setting range, assigning the iron-
core saturation coefficients (E2-07 and
E2-08) to temporary values.
Digital Operator Display
End3
Cause
The correct current rating printed on the
motor nameplate was not entered into
T1-04.
Digital Operator Display
End4
Cause
The calculated slip is outside the allowable
range.
Digital Operator Display
End5
Cause
The calculated resistance value is outside
the allowable range.
Digital Operator Display
End6
Cause
A1-02 setting error.
YASKAWA ELECTRIC TOEP C710616 41G YASKAWA AC Drive - A1000 Quick Start Guide
Table 5.6 Auto-Tuning Codes, Causes, and Possible Solutions
Excessive V/f Setting (detected only during Rotational Auto-Tuning and displayed after Auto-Tuning is
complete)
• Prior to Auto-Tuning, verify the information on the motor nameplate.
• Enter proper values from motor nameplate to parameters T1-03 to T1-05 and repeat Auto-Tuning.
• If possible, disconnect the motor from the load and perform Auto-Tuning. If the load cannot be uncoupled,
use the current Auto-Tuning results.
Motor Iron-Core Saturation Coefficient (detected only during Rotational Auto-Tuning and displayed after
Auto-Tuning is complete)
• Make sure the data entered to the T1 parameters match the information written on the motor nameplate.
• Restart Auto-Tuning and enter the correct information.
• Check and correct faulty motor wiring.
• Disconnect the motor from machine and perform Rotational Auto-Tuning.
Rated Current Setting Alarm (displayed after Auto-Tuning is complete)
• Check the setting of parameter T1-04.
• Check the motor data and repeat Auto-Tuning.
Adjusted Slip Calculation Error
• Make sure the data entered for Auto-Tuning is correct.
• If possible, perform Rotational Auto-Tuning. If not possible, perform Stationary Auto-Tuning 2.
Resistance Tuning Error
• Double-check the data entered for the Auto-Tuning process.
• Check the motor and motor cable connection for faults.
Leakage Inductance Alarm
• Double-check the data entered for the Auto-Tuning process.
• Check the setting of A1-02.
• Check the control mode and repeat Auto-Tuning.

5.5 Auto-Tuning Fault Detection

Error Name
Possible Solutions
Error Name
Possible Solutions
Error Name
Possible Solutions
Error Name
Possible Solutions
Error Name
Possible Solutions
Error Name
Possible Solutions
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