YASKAWA L1000A - Page 309

6.6 Auto-Tuning Fault Detection
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual 309
Troubleshooting
6
Digital Operator Display Error Name
Er-08 Rated Slip Error
Cause Possible Solutions
Motor data entered during Auto-Tuning was
incorrect.
• 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.
Drive-calculated values outside parameter setting
range or the tuning process took too long.
• Check and correct faulty motor wiring.
• Perform Rotational Auto-Tuning. Remember that the rope must be fully removed from the motor and the brake must be released to
perform Rotational Auto-Tuning.
The load during rotational Auto-Tuning was too
high.
• 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.
Digital Operator Display Error Name
Er-09 Acceleration Error
Cause Possible Solutions
The motor did not accelerate for the specified
acceleration ramp.
Lengthen the acceleration ramp (C1-01).
Torque limit when motoring is too low (L7-01 and
L7-02).
• Check the settings of parameters L7-01 and L7-02.
• Increase the setting of L7-01 and L7-02.
The load during Rotational Auto-Tuning was too
high.
• 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.
Digital Operator Display Error Name
Er-10 Motor Direction Error
Cause Possible Solutions
The encoder signal lines are not properly connected
to the drive.
Check and correct wiring to the PG encoder.
Motor and PG direction are opposite.
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.
The load pulled the motor in the opposite direction
of the speed reference and the torque exceeded
100%.
Uncouple the motor from the load and repeat Auto-Tuning.
Digital Operator Display Error Name
Er-11 Motor Speed Fault
Cause Possible Solutions
Torque reference is too high.
• Lengthen the acceleration ramp set to C1-01 (i.e., increase the acceleration time.)
• Disconnect the machine from the motor, if possible.
Digital Operator Display Error Name
Er-12 Current Detection Error
Cause Possible Solutions
One of the motor phases is missing:
(U/T1, V/T2, W/T3).
Check motor wiring and correct any problems.
Current exceeded the current rating of the drive. • 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.
The current is too low.
Attempted Auto-Tuning without motor connected to
the drive.
Connect the motor and perform Auto-Tuning.
Current detection signal error.
Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or your nearest
sales representative.
Digital Operator Display Error Name
Er-13 Leakage Inductance Error
Cause Possible Solutions
Drive was unable to complete tuning for leakage
inductance within 300 seconds.
• 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.
Digital Operator Display Error Name
Er-18 Induction Voltage Error
Cause Possible Solutions
The induced voltage constant attempted to set a
value outside the allowable setting range.
Double-check the data entered to the T2- parameters, and perform Auto-Tuning again.
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