YASKAWA GA800 Series Technical Reference page 321

Code Name
Note:
• The drive detects this error if the pulses in the opposite direction of the speed reference are more than the value set in F1-19.
• Do a Fault Reset to clear the fault.
Code Name
dv7 Polarity Judge Timeout
Note:
• The drive detects this error if it cannot detect polarity in a pre-set length of time.
• Do a Fault Reset to clear the fault.
Code Name
dWF1 EEPROM Memory DWEZ Data
Error
Note:
• The drive detects this error if there is an error in the DriveWorksEZ program that was saved to EEPROM.
• Do a Fault Reset to clear the fault.
Code Name
dWF2 DriveWorksEZ Fault 2
Note:
Do a Fault Reset to clear the fault.
Code Name
dWF3 DriveWorksEZ Fault 3
Note:
Do a Fault Reset to clear the fault.
Code Name
dWFL DriveWorksEZ Fault
Note:
Do a Fault Reset to clear the fault.
Code Name
MECHATROLINK Watchdog Timer
E5
Err
Note:
• Do a Fault Reset to clear the fault.
• If the drive detects this fault, it will operate the motor as specified by the stop method set in F6-25 [MECHATROLINK Watchdog Error Sel].
Code Name
EF0 Option Card External Fault
Note:
• The drive detects this fault if the alarm function on the external device side is operating.
• Do a Fault Reset to clear the fault.
• If the drive detects this fault, it will operate the motor as specified by the stop method set in F6-03 [Comm External Fault (EF0) Select].
YASKAWA SIEPC71061737B GA800 Drive Technical Reference
Causes
The setting of n8-84 [Polarity Detection Current] is
too low.
Pole Position Detection failed.
The PG option card or the encoder on the motor side
is damaged.
Causes
There is a disconnection in the motor coil winding.
The screws on the drive output terminals are loose.
Causes
There is an error in the EEPROM peripheral circuit.
There is a problem with the EEPROM data.
Causes
There was a fault in the DriveWorksEZ program.
Causes
There was a fault in the DriveWorksEZ program.
Causes
There was a fault in the DriveWorksEZ program.
Causes
The drive detected a watchdog circuit exception while
it received data from the controller.
Causes
The communication option received an external fault
from the controller.
A programming error occurred on the controller side.
Possible Solutions
Increase the n8-84 setting from the default. Consult the motor
manufacturer for information about maximum setting values.
If you are using an IPM motor, do High Frequency Injection Auto-
Tuning.
Repair the wiring and re-energize the drive, then replace the PG
option card or the PG if the problem continues.
Possible Solutions
Measure the motor line-to-line resistance and replace the motor if a
coil is disconnected.
Tighten the terminal screws to the correct tightening torque.
Possible Solutions
• Re-energize the drive.
• If the fault stays, replace the control board or the drive. For
information about replacing the control board, contact Yaskawa
or your nearest sales representative.
Set A1-03 = 2220, 3330 [Initialize Parameters = 2-Wire
Initialization, 3-Wire Initialization] to initialize the drive, then
upload the DriveWorksEZ project to the drive again.
Possible Solutions
Examine the DriveWorksEZ program and remove the cause of the
fault. This is not a drive fault.
Possible Solutions
Examine the DriveWorksEZ program and remove the cause of the
fault. This is not a drive fault.
Possible Solutions
Examine the DriveWorksEZ program and remove the cause of the
fault. This is not a drive fault.
Possible Solutions
Examine the MECHATROLINK cable connection. If this error
occurs frequently, examine the wiring and decrease the effects of
electrical interference as specified by these manuals:
• MECHATROLINK-II Installation Guide (MECHATROLINK
Members Association, manual number MMATDEP011)
• MECHATROLINK-III Installation Manual (MECHATROLINK
Members Association, publication number MMATDEP018)
Possible Solutions
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input from the controller.
Examine the operation of the controller program.
7.4 Fault
7
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