Auto-Tuning Errors - YASKAWA GA700 Technical Manual

6.7

Auto-Tuning Errors

The following shows errors detected during Auto-Tuning. Auto-Tuning errors are displayed on the keypad and
will cause the motor to coast to a stop. Notification signals for the faults and alarms will not be output even if
Auto-Tuning errors occur.
Two types of Auto-Tuning errors are displayed: Endx and Erx.
Endx indicates Auto-Tuning has successfully completed with discrepancies in the calculations. Check the cause of
the error and perform Auto-Tuning again after fixing the cause, or set the motor parameters manually. The drive
may be used in the application if no cause can be identified despite the existence of an Endx error.
Erx indicates that Auto-Tuning has not completed successfully. Check for the cause of the error and perform
Auto-Tuning again after fixing the cause.
Code Name
End1 Excessive V/f Setting
Code Name
End2 Iron Core Saturation
Coefficient
Code Name
End3 Rated Current Setting
Alarm
Code Name
End4 Adjusted Slip Calculation
Error
Code Name
End5 Resistance Tuning Error
Code Name
End6 Leakage Inductance Alarm
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Cause
The torque reference exceeded 20%
during Auto-Tuning or the no-load
current measured after Auto-Tuning
exceeded 80%.
Cause
The motor nameplate data entered
during Auto-Tuning is incorrect.
Results from Auto-Tuning were outside
the parameter setting range, assigning
E2-07 or E2-08 [Motor Saturation
Coefficient 2] to temporary values.
Cause
The rated current value that was input is
incorrect.
Cause
The Auto-Tuning results were outside
the allowable parameter setting range.
The motor rated slip measured after
Stationary Auto-Tuning were 0.2 Hz or
lower.
The motor rated slip measured after
compensation using E2-08 [Motor
Saturation Coefficient 2] were outside
the allowable range.
The secondary resistor measurement
results were outside the allowable range.
Cause
The Auto-Tuning results of the Line-to-
Line Resistance were outside the
allowable range.
Cause
The Auto-Tuning results were outside
the allowable parameter setting range.
The setting for A1-02 [Control Method
Selection] is not appropriate.

6.7 Auto-Tuning Errors

Possible Solution
• Make sure the input motor nameplate data is
correct.
• Perform Auto-Tuning again and correctly set the
data that appears on the motor nameplate.
• If motor and load can be uncoupled, remove the
motor from the machine and perform Rotational
Auto-Tuning again.
• If motor and load cannot be uncoupled, use the
measurement results obtained from Auto-Tuning
as is.
Possible Solution
• Make sure the input motor nameplate data is
correct.
• Perform Auto-Tuning again and correctly set the
data that appears on the motor nameplate.
• Check and correct faulty motor wiring.
• If motor and load can be uncoupled, remove the
motor from the machine and perform Rotational
Auto-Tuning again.
Possible Solution
Perform Auto-Tuning again and set the correct
rated current that printed on the motor nameplate.
Possible Solution
• Make sure the input motor nameplate data is
correct.
• If motor and load can be uncoupled, remove the
motor from the machine and perform Rotational
Auto-Tuning again.
• If motor and load cannot be uncoupled, perform
Stationary Auto-Tuning 2.
Possible Solution
• Make sure the input motor nameplate data is
correct.
• Check and correct faulty motor wiring.
Possible Solution
Check whether the input motor nameplate data is
correct, and perform Auto-Tuning again.
• Check the value set in A1-02 [Control Method
Selection].
• Check whether the input motor nameplate data is
correct, and perform Auto-Tuning again.
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