6.7 Auto-Tuning Errors
384 YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Code Name Causes Possible Solutions
Er-11 Motor Speed Error The torque reference during acceleration
is too high (100%).
• Increase the value set in C1-01 [Acceleration
Time 1].
• Disconnect the machine from the motor and do
Rotational Auto-Tuning again.
Code Name Causes Possible Solutions
Er-12 Current Detection Error There is a phase loss in the drive input
power. (U/T1, V/T2, W/T3)
Examine and repair motor wiring.
The current exceeded the current rating
of the drive.
The output current is too low.
• Check the motor wiring for any short circuits
between the wires.
• Check and turn ON any magnetic contactors
used between motors.
• Replace the control board or the drive. For
information about replacing the control board,
contact Yaskawa or your nearest sales
representative.
You tried Auto-Tuning without a motor
connected to the drive.
Connect the motor and do Auto-Tuning.
There was a current detection signal
error.
Replace the control board or the drive. For
information about replacing the control board,
contact Yaskawa or your nearest sales
representative.
Code Name Causes Possible Solutions
Er-13 Leakage Inductance Error The motor rated current value is
incorrect.
Correctly set the rated current indicated on the
motor nameplate and perform Auto-Tuning again.
The drive could not complete tuning for
leakage inductance in fewer than 300
seconds.
Examine and repair motor wiring.
Code Name Causes Possible Solutions
Er-14 Motor Speed Error 2 The motor speed was more than two
times the amplitude of speed reference
during Inertia Tuning.
Decrease the value set in C5-01 [ASR Proportional
Gain 1].
Code Name Causes Possible Solutions
Er-15 Torque Saturation Error During Inertia Tuning, the output torque
was more than the value set in L7-01 to
L7-04 [Torque Limit].
• Increase the value set in L7-01 to L7-04 [Torque
Limit] as much as possible.
• Decrease the values set for the frequency and
amplitude of the test signals used when doing
inertia tuning. First, decrease the test signal
amplitude, and then do Inertia Tuning. If the
error continues, decrease the test signal
frequency and do Inertia Tuning again.
Code Name Causes Possible Solutions
Er-16 Inertia ID Error The inertia found by the drive was too
small or too large during Inertia Tuning
(10% or less, or 50000% or more).
• Decrease the values set for the frequency and
amplitude of the test signals used when doing
inertia tuning. First, decrease the test signal
amplitude, and then do Inertia Tuning. If the
error continues, decrease the test signal
frequency and do Inertia Tuning again
• Correctly set the motor inertia as specified by
the motor, and do Inertia Tuning again.
Code Name Causes Possible Solutions
Er-17 Reverse Prohibited Error b1-04 = 1 [Reverse Operation Selection
= Reverse disabled] has been set.
Note:
You cannot do Inertia Tuning if the
drive cannot rotate the motor in
reverse.
1. Enable reverse in the target machine.
2. Set b1-04 = 0 [Reverse enabled].
3. Do Inertia Tuning again.
Code Name Causes Possible Solutions
Er-18 Back EMF Error The result of the induced voltage tuning
was not in the applicable range.
1. Make sure that the input motor nameplate data
is correct.
2. Do Auto-Tuning again and correctly set the
motor nameplate data.
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