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6.2 Types of Faults, Minor Faults, Alarms, and Errors
336 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
6.2 Types of Faults, Minor Faults, Alarms, and Errors
Check the drive keypad for a code or message if the drive or motor do not operate correctly.
If problems occur that are not covered in this manual, contact the nearest Yaskawa representative with the
following information:
• Drive model
• Drive software version
• Date of purchase
• Description of the problem (such as failure conditions)
The following table contains descriptions of the various types of faults, minor faults, alarms, and errors that may
occur while operating the drive.
Contact Yaskawa Electric Engineering Corporation if the drive is damaged. The contact information appears on
the back cover of the manual.
Table 6.1 Types of Faults, Minor Faults, Alarms, and Errors
Mode Drive Response
Fault
When the drive detects a fault, it will cause these conditions: The drive will not operate until you clear the fault with a Fault
Reset and the drive goes back to usual status.
• The keypad shows the fault code and and ALM/ERR of the LED Status Ring illuminate continuously.
• The drive shuts off output, and the motor coasts to a stop. Some faults let the user select a motor stopping method.
Note:
If S1-54 = 1 [Brake Sequence Selection = Enabled] , then the drive output will be interrupted while the Brake release
command is simultaneously shut OFF, closing the brake.
• Fault relay output MA-MC will turn ON, and MB-MC will turn OFF.
Minor Faults/Alarms
When the drive detects a minor fault or an alarm, it will cause these conditions: It is not necessary to do Fault Reset.
• The keypad shows the alarm code and and ALM/ERR on the LED Status Ring flash.
• The drive will continue to operate the motor. Some alarms let the user select a motor stopping method.
Note:
The drive will coast to stop when it detects bb [Baseblock] or STo [Safe Torque OFF] . If S1-54 = 1 , then the drive
output will be interrupted while the Brake release command is simultaneously shut OFF, closing the brake.
• If the drive detects a minor fault, the terminal set to H2-01 to H2-05 = 10 [MFDO Function Selection = Alarm] will
switch ON. If you do not set H2-01 to H2-05 , the drive will not trigger MFDO terminals when it detects a minor fault.
• The drive will not output a minor fault signal when it detects an alarm.
Operation Errors
An error occurs when parameter settings do not agree or a parameter combination is incorrect. The drive will not operate
until you set the parameters correctly.
When the drive detects an operation error, these conditions will result: Find the parameters that caused the error, and correct
the settings.
• The keypad shows the error code.
• Multi-function outputs do not output an alarm signal.
Auto-Tuning Errors
An error occurs during Auto-Tuning.
When the drive detects a tuning error, it will cause these conditions: Remove the cause of the error and do Auto-Tuning
again.
• The keypad shows the error code.
• Multi-function outputs do not output an alarm signal.
• The motor coasts to stop.
Copy Function Error
An error occurs when you use the keypad for a backup, restore, or verify operation.
When the drive detects a copy function error, it will cause these conditions:
• The keypad shows the error code.
• Multi-function outputs do not output an alarm signal.
Push a key on the keypad to clear the error. Remove the cause of the error and try the backup, restore, or verify operation
again.