Troubleshooting
6
6.5 Minor Faults/Alarms
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual 363
Code Name Causes Possible Solutions
The communication protocol is not
compatible.
• Examine the values set in H5-xx.
• Examine the settings on the controller side and
correct the difference in communication
conditions.
The value set in H5-09 [CE Detection
Time] is too small for the
communications cycle.
• Change the controller software settings.
• Increase the value set in H5-09.
The controller software or hardware is
causing a communication problem.
Examine the controller and remove the cause of the
problem.
Note:
• The drive detects this error if it does not correctly receive control data for the CE detection time set to H5-09.
• If the drive detects this error, the terminal assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
• If the drive detects this error, the drive will operate the motor as specified by the stopping method set in H5-04 [Communication Error
Stop Method].
Code Name Causes Possible Solutions
CP1 Comparator 1 Limit Error The monitor value set in H2-20
[Comparator 1 Monitor Selection] was
in the range of H2-21 [Comparator 1
Lower Limit] and H2-22 [Comparator 1
Upper Limit].
Examine the monitor value and remove the cause
of the error.
Note:
• The drive detects this error when the terminal is assigned to H2-01 to H2-03 = 66 [MFDO Function Select = Comparator1].
• If the drive detects this error, the terminal assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
• H2-33 [Comparator1 Protection Selection] enables and disables CP1 detection.
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 error.
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 assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
• 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 of the
controller is not set in the permitted
range of the MECHATROLINK
interface option card.
Set the communications cycle of the controller in
the permitted range of the MECHATROLINK
interface option card.
Note:
If the drive detects this error, the terminal assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
Code Name Causes Possible Solutions
dEv Speed Deviation The load is too heavy Decrease the load.
Acceleration and deceleration times are
set too short.
Increase the values set in C1-01 to C1-08
[Acceleration/Deceleration Time].
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 assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
• If the drive detects this error, the drive will operate the motor as specified by the stopping method set in F1-04 [Speed Deviation
Detection Select].
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