Auto-Tuning Fault Detection - YASKAWA iQpump1000 User Manual

5.5 Auto-Tuning Fault Detection

5.5 Auto-Tuning Fault Detection
When the Auto-Tuning faults shown below are detected, the fault is displayed on the HOA keypad and the motor coasts to a
stop. Auto-Tuning faults do not trigger a multi-function terminal set for fault or alarm output.
An Endo error indicates that although Auto-Tuning has successfully completed, there is some discrepancy in the calculations.
If an Endo error occurs, check for the cause of the error using the table in this section, and perform Auto-Tuning again or
manually set the motor parameters after fixing the problem. Start the application if no problem can be diagnosed despite the
existence of the Endo error.
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Auto-Tuning Codes, Causes, and Possible Solutions
HOA Keypad Display
End1
Cause
The torque reference exceeded 20% during
Auto-Tuning.
The results from Auto-Tuning the no-load current
exceeded 80%.
HOA Keypad 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.
HOA Keypad Display
End3
Cause
The correct current rating printed on the motor
nameplate was not entered into T1-04.
HOA Keypad Display
End4
Cause
The calculated slip is outside the allowable range.
HOA Keypad Display
End5
Cause
The calculated resistance value is outside the
allowable range.
HOA Keypad Display
End6
Cause
The calculated leakage inductance value is outside
the allowable range.
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Table 5.5 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 T1-02 and T1-04 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.
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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