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Code
Name
Er-14
Motor Speed Error 2
Er-15
Torque Saturation Error
Er-16
Inertia ID Error
Er-17
Reverse Prohibited Error
Er-18
Back EMF Error
Er-19
PM Inductance Error
Er-20
Stator Resistance Error
Er-21
Z Pulse Correction Error
Er-25
HighFreq Inject Param Tuning Err
YASKAWA TOEPC71061782C GA800 Drive Installation & Primary Operation
Causes
The drive could not complete tuning for leakage
inductance in fewer than 300 seconds.
The motor speed was more than two times the
amplitude of speed reference during Inertia Tuning.
During Inertia Tuning, the output torque was more
than the value set in L7-01 to L7-04 [Torque Limit].
The inertia found by the drive was too small or too
large during Inertia Tuning (10% or less, or 50000%
or more).
b1-04 = 1 [Reverse Operation Selection = Reverse
Disabled]
Note:
You cannot do Inertia Tuning if the drive cannot
rotate the motor in reverse.
The result of the induced voltage tuning was not in
the applicable range.
The Auto-Tuning results of the PM motor inductance
were not in the applicable range.
The Auto-Tuning results of the PM Motor Stator
Resistance were not in the applicable range.
The motor is wired incorrectly.
The encoder is wired incorrectly.
You did Auto-Tuning on a coasting motor.
The setting for the direction of the encoder motor
rotation is incorrect.
The number of encoder pulses is incorrect.
The motor Inertia is too large.
Parameter b1-04 = 1 [Reverse Operation Selection =
Reverse Disabled] and you did Z Pulse Offset
Tuning.
The motor vibrates during tuning.
The encoder is damaged.
The motor data is incorrect.
20 Troubleshooting
Possible Solutions
Examine and repair motor wiring.
Decrease the value set in C5-01 [ASR Proportional Gain 1].
• 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.
• 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.
1.
Enable reverse in the target machine.
2.
Set b1-04 = 0 [Reverse Enabled].
3.
Do Inertia Tuning again.
1.
Make sure that the input motor nameplate data is correct.
2.
Do Auto-Tuning again and correctly set the motor nameplate
data.
1.
Make sure that the input motor nameplate data is correct.
2.
Do Auto-Tuning again and correctly set the motor nameplate
data.
1.
Make sure that the input motor nameplate data is correct.
2.
Do Auto-Tuning again and correctly set the motor nameplate
data.
1.
Repair motor and encoder wiring errors.
2.
Do Z Pulse Offset Tuning again.
1.
Wait for the motor to fully stop.
2.
Do Z Pulse Offset Tuning again.
1.
Set the direction of motor rotation of the encoder in F1-05
[Encoder 1 Rotation Selection] correctly.
2.
Do Z Pulse Offset Tuning again.
1.
Set the number of encoder pulses in F1-01 [Encoder 1 Pulse
Count (PPR)] correctly.
2.
Do Z Pulse Offset Tuning again.
Increase the value set in n8-02 [Pole Alignment Current Level].
• If the machine prevents reverse rotation, disconnect the motor
from the machinery, set b1-04 = 0 [Reverse Enabled], then do Z
Pulse Offset Tuning. When tuning is complete, set b1-04 = 1
[Reverse Disabled].
• If the machine does not prevent reverse rotation, set b1-04 = 0
and do Z Pulse Offset Tuning.
• Increase the values set in n8-03 [Pole Position Detection Time]
and n8-04 [Pole Alignment Time].
• Decrease the value set in n8-02 [Pole Alignment Current Level].
• Examine the signal output from the encoder.
• Replace the encoder.
Do Stationary Auto-Tuning again.
Note:
If the drive detects Er-25 after doing Stationary Auto-Tuning,
the motor may not be able to use high frequency injection
control. Contact Yaskawa or your nearest sales representative
for more information.
99
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