YASKAWA L1000A Technical Manual page 278

6.6 Auto-Tuning Fault Detection
The load during rotational Auto-Tuning was too
high.
Digital Operator Display
Er-09
Cause
The motor did not accelerate for the specified
acceleration ramp.
Torque limit when motoring is too low (L7-01 and
L7-02).
The load during Rotational Auto-Tuning was too
high.
Digital Operator Display
Er-10
Cause
The encoder signal lines are not properly connected
to the drive.
Motor and PG direction are opposite.
The load pulled the motor in the opposite direction
of the speed reference and the torque exceeded
100%.
Digital Operator Display
Er-11
Cause
Torque reference is too high.
Digital Operator Display
Er-12
Cause
One of the motor phases is missing:
(U/T1, V/T2, W/T3).
Current exceeded the current rating of the drive.
The current is too low.
Attempted Auto-Tuning without motor connected to
the drive.
Current detection signal error.
Digital Operator Display
Er-13
Cause
Drive was unable to complete tuning for leakage
inductance within 300 seconds.
Digital Operator Display
Er-18
Cause
The induced voltage constant attempted to set a
value outside the allowable setting range.
Digital Operator Display
Er-19
Cause
The induced voltage constant attempted to set a
value to E5-08 or E5-09 outside the allowable range.
Digital Operator Display
Er-20
Cause
Stator resistance tuning attempted to set a value to
E5-06 that is outside the allowable setting range.
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• Disconnect the motor from machine and restart Auto-Tuning. If motor and load cannot be uncoupled make sure the load is lower
than 30%.
• If a mechanical brake is installed, make sure it is fully lifted during tuning.
Acceleration Error
Lengthen the acceleration ramp (C1-01).
• Check the settings of parameters L7-01 and L7-02.
• Increase the setting of L7-01 and L7-02.
• Disconnect the motor from machine and restart Auto-Tuning. If motor and load cannot be uncoupled make sure the load is lower
than 30%.
• If a mechanical brake is installed, make sure it is fully lifted during tuning.
Motor Direction Error
Check and correct wiring to the PG encoder.
Check the motor speed monitor U1-05 while turning the motor manually in forward direction. If the sign displayed is negative,
change the setting of parameter F1-05.
Uncouple the motor from the load and repeat Auto-Tuning.
Motor Speed Fault
• Lengthen the acceleration ramp set to C1-01 (i.e., increase the acceleration time.)
• Disconnect the machine from the motor, if possible.
Current Detection Error
Check motor wiring and correct any problems.
• Check the motor wiring for a short between motor lines.
• Make sure the motor contactor is closed during tuning.
• Replace either the control board or the entire drive. For instructions on replacing the control board, The current is too low. contact
Yaskawa or your nearest sales representative.
Connect the motor and perform Auto-Tuning.
Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or your nearest
sales representative.
Leakage Inductance Error
• Check all wiring and correct any mistakes.
• Double-check the motor rated current value that was entered to T1-04 for Auto-Tuning.
• Check the motor rated current value written on the motor nameplate and enter the correct value.
Induction Voltage Error
Double-check the data entered to the T2-
Inductance Error
Double-check the data entered to the T2-
Stator Resistance Error
Double-check the data entered to the T2-
YASKAWA ELECTRIC SIEP C710616 38A YASKAWA AC Drive L1000A Technical Manual
Error Name
Possible Solutions
Error Name
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parameters, and perform Auto-Tuning again.
Error Name
Possible Solutions
parameters, and perform Auto-Tuning again.
Error Name
Possible Solutions
parameters, and perform Auto-Tuning again.