Troubleshooting
7
7.5 Minor Faults/Alarms
YASKAWA SIEPC71061753C GA500 Technical Manual 279
Code Name Causes Possible Solutions
CP2 Comparator 2 Limit Error
The monitor value set in H2-26 [Comparator 2
Monitor Selection] was outside the range of H2-27
[Comparator 2 Lower Limit] and H2-28
[Comparator 2 Upper Limit].
Examine the monitor value and remove the cause of the fault.
Note:
• The drive detects this error when the terminal is assigned to H2-01 to H2-03 = 67 [MFDO Function Select = Comparator2].
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
• Parameter H2-35 [Comparator2 Protection Selection] enables and disables CP2 detection.
Code Name Causes Possible Solutions
CrST Cannot Reset
The drive received a fault reset command when a
Run command was active.
Turn off the Run command then de-energize and re-energize the
drive.
Code Name Causes Possible Solutions
CyC
MECHATROLINK
CommCycleSettingErr
The communications cycle setting of the controller
is not in the permitted range of the
MECHATROLINK interface option.
Set the communications cycle of the controller in the permitted
range of the MECHATROLINK interface option.
Note:
If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
Code Name Causes Possible Solutions
CyPo Cycle Power to Accept Changes
Although F6-15 = 1 [Comm. Option Parameters
Reload = Reload Now], the drive does not update
the communication option parameters.
Re-energize the drive to update the communication option
parameters.
Code Name Causes Possible Solutions
dEv Speed Deviation
The load is too large. Decrease the load.
The acceleration/deceleration times are too short. Increase the values set in C1-01 to C1-08 [Acceleration/
Deceleration Times].
The dEv detection level settings are incorrect. Adjust F1-10 [Speed Deviation Detection Level] and F1-11
[Speed Deviation Detect DelayTime].
The load is locked up. Examine the machine.
The holding brake is stopping the motor. Release the holding brake.
Note:
• The drive detects this error if the difference between the detected speed and the speed reference is more than the setting of F1-10 for longer than F1-11.
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
• If the drive detects this error, it will operate the motor as specified by the stopping method set in F1-04 [Speed Deviation Detection Select].
Code Name Causes Possible Solutions
dnE Drive Disabled
A terminal set for H1-xx = 6A [Drive Enable]
turned OFF.
Examine the operation sequence.
Note:
If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
Code Name Causes Possible Solutions
dWA2 DriveWorksEZ Alarm 2
There was an error in the DriveWorksEZ program. Examine the DriveWorksEZ program and remove the cause of the
fault. This is not a drive fault.
Note:
If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
Code Name Causes Possible Solutions
dWA3 DriveWorksEZ Alarm 3
There was an error in the DriveWorksEZ program. Examine the DriveWorksEZ program and remove the cause of the
fault. This is not a drive fault.
Note:
If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
Code Name Causes Possible Solutions
dWAL DriveWorksEZ Alarm
There was an error in the DriveWorksEZ program. Examine the DriveWorksEZ program and remove the cause of the
fault. This is not a drive fault.
Note:
If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
Code Name Causes Possible Solutions
E5
MECHATROLINK Watchdog
Timer Err
The drive detected a watchdog circuit exception
while it received data from the controller.
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)
Note:
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
• If the drive detects this error, it will operate the motor as specified by the stopping method set in F6-25 [MECHATROLINK Watchdog Error Sel].
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