6.7 Auto-Tuning Fault Detection
378
YASKAWA ELECTRIC
SIEP C710636 02B YASKAWA U1000 Technical Manual
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.
• If a magnetic contactor is used between motors, make sure it is closed.
• Replace either the control board or the entire drive. For instructions on replacing the control board, 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-14
Motor Speed Error 2
Cause
Possible Solutions
The motor speed exceeded twice the amplitude of
speed reference during Inertia Tuning.
Reduce the ASR gain set to C5-01.
Digital Operator Display
Error Name
Er-15
Torque Saturation Error
Cause
Possible Solutions
The output torque reached the torque limit set in
L7-01 through L7-04 during Inertia Tuning.
• Increase the torque limits in L7-01 through L7-04 (but keep them within reasonable limits).
• First try reducing the test signal frequency in T3-01 and repeat the tuning. If necessary, then try reducing the test signal amplitude
(T3-02) and repeat the tuning.
Digital Operator Display
Error Name
Er-16
Inertia ID Error
Cause
Possible Solutions
The inertia identified by the drive was abnormally
small or abnormally large during Inertia Tuning.
• First try reducing the test signal frequency in T3-01 and repeat the tuning. If necessary, then try reducing the test signal amplitude
(T3-02) and repeat the tuning.
• Check the basic motor inertia value entered to T3-03.
Digital Operator Display
Error Name
Er-17
Reverse Prohibited Error
Cause
Possible Solutions
Drive is prohibited from rotating the motor in
reverse while attempting to perform Inertia Tuning.
• Inertia Auto-Tuning cannot be performed if the drive is restricted from rotating in reverse.
• Assuming it is acceptable for the application to rotate in reverse, set b1-04 to 0 and then execute Inertia Tuning.
Digital Operator Display
Error Name
Er-18
Induction Voltage Error
Cause
Possible Solutions
The result of Back EMF Constant Tuning (induced
voltage) exceeds the allowable setting range.
Double check the data that was entered to the T2-
parameters, and perform Auto-Tuning again.
Digital Operator Display
Error Name
Er-19
PM Inductance Error
Cause
Possible Solutions
The induced voltage constant inductance values set
to E5-08 or E5-09 exceed the allowable range.
Double check the data that was entered to the T2-
parameters, and perform Auto-Tuning again.
Digital Operator Display
Error Name
Cause
Possible Solutions
Er-20
Stator Resistance Error
Stator resistance tuning attempted to set a value to
E5-06 that is outside the allowable setting range.
Double check the data that was entered to the T2-
parameters, and perform Auto-Tuning again.
Digital Operator Display
Error Name
Er-21
Z Pulse Correction Error
Cause
Possible Solutions
Motor could not run in reverse during Auto-Tuning
when b1-04 was set to 1.
Perform Auto-Tuning with the motor without a load and with b1-04 set to 0.
Either the motor or the PG encoder on the motor is
not properly wired.
Check the wiring for the motor and the PG encoder. Repeat Auto-Tuning.
The direction for the PG encoder is set incorrectly, or
the number of pulses set for the PG encoder is
wrong.
Check the direction and number of pulses set for the PG encoder. Repeat Auto-Tuning.
PG encoder is damaged.
Check the signal output from the PG encoder attached to the motor. Replace the PG if damaged.
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