YASKAWA U1000 iQpump Drive, Technical Manual

Page: 398 / 706

Digital Operator Display Error Name
End7 No-Load Current Alarm
Cause Possible Solutions
The entered no-load current value was
outside the allowable range.
Check and correct faulty motor wiring.
Auto-Tuning results were less than 5% of
the motor rated current.
Double-check the data entered for the Auto-Tuning process.
Digital Operator Display Error Name
Er-01 Motor Data Error
Cause Possible Solutions
Motor data or data entered during
Auto-Tuning was incorrect
.
• Check that the motor data entered to T1 parameters matches motor nameplate input before Auto-Tuning.
• Restart Auto-Tuning and enter the correct information.
Motor rated power and motor-rated current
settings (T1-02 and T1-04) do not match.
• Check the drive and motor capacities.
• Correct the settings of parameters T1-02 and T1-04.
Motor rated current and detected no-load
current are inconsistent.
• Check the motor rated current and no-load current.
• Correct the settings of parameters T1-04 and E2-03.
Base frequency and motor rated speed
(T1-05 and T1-07) do not match.
• Correct the settings of parameters T1-05 and T1-07.
• Check that the correct number of poles were entered to T1-06.
Digital Operator Display Error Name
Er-02 Minor Fault
Cause Possible Solutions
An alarm was triggered during Auto-
Tuning.
Exit the Auto-Tuning menu, check the alarm code, remove the alarm cause, and repeat Auto-Tuning.
Digital Operator Display Error Name
Er-03 STOP Button Input
Cause Possible Solutions
Auto-Tuning canceled by pressing STOP
button.
Auto-Tuning did not complete properly. Restart Auto-Tuning.
Digital Operator Display Error Name
Er-04 Line-to-Line Resistance 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.
Results from Auto-Tuning are outside the
parameter setting range or the tuning
process took too long.
Check and correct faulty motor wiring.
Faulty motor cable or cable connection.
Digital Operator Display Error Name
Er-05 No-Load Current 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.
Results from Auto-Tuning are outside the
parameter setting range or the tuning
process took too long.
• Check and correct faulty motor wiring.
• Perform Rotational Auto-Tuning.
The load was too high during Rotational
Auto-tuning.
• 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.
6.7 Auto-Tuning Fault Detection
398 YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual