Troubleshooting
7
7.5 Minor Faults/Alarms
SIEPYEUOQ2A01G AC Drive Q2A Technical Manual 287
Code Name Causes Possible Solutions
CP2 Comparator 2 Limit Error
The monitor value set in H2-26 [Compare2 Mon.
Selection] was outside the range of H2-27
[Compare2 Low Limit] and H2-28 [Compare2 Up
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, H2-02, and H2-03 = 3D [Multi-Function Digital Output 1, Multi-Function Digital Output 2, and Multi-
Function Digital Output 3 = Comparator2].
• If the drive detects this error, the terminal assigned to H2-01, H2-02, and H2-03 = 4 [Multi-Function Digital Output 1, Multi-Function Digital Output 2, and Multi-Function
Digital Output 3 = Alarm] will be ON.
• H2-35 [Compare2 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, H2-02, and H2-03 = 4 [Multi-Function Digital Output 1, Multi-Function Digital Output 2, and Multi-Function
Digital Output 3 = 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 Acceleration/Deceleration Time C1-01
to C1-08 [Accel Time 1 to Decel Time 4].
The dEv detection level settings are incorrect. Adjust F1-10 [Speed Dev Level] and F1-11 [Speed Dev Delay
Time].
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, H2-02, and H2-03 = 4 [Multi-Function Digital Output 1, Multi-Function Digital Output 2, and Multi-Function
Digital Output 3 = 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 Dev Detection Select].
Code Name Causes Possible Solutions
dnE Drive Disabled
A terminal set for H1-xx: MFDI Function Select =
1A [Drive Enable] turned OFF.
Examine the operation sequence.
Note:
If the drive detects this error, the terminal assigned to H2-01, H2-02, and H2-03 = 4 [Multi-Function Digital Output 1, Multi-Function Digital Output 2, and Multi-Function
Digital Output 3 = Alarm] will be ON.
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 assigned to H2-01, H2-02, and H2-03 = 4 [Multi-Function Digital Output 1, Multi-Function Digital Output 2, and Multi-Function
Digital Output 3 = Alarm] will be ON.
• If the drive detects this error, it will operate the motor as specified by the stop method set in F6-25 [MLII Watchdog Error Sel].
Code Name Causes Possible Solutions
EF
FWD/REV Run Command Input
Error
A forward command and a reverse command were
input at the same time for longer than 0.5 s.
Examine the forward and reverse command sequence and correct
the problem.
Note:
• If the drive detects EF, the motor will ramp to stop.
• If the drive detects this error, the terminal assigned to H2-01, H2-02, and H2-03 = 4 [Multi-Function Digital Output 1, Multi-Function Digital Output 2, and Multi-Function
Digital Output 3 = Alarm] will be ON.
Code Name Causes Possible Solutions
EF0 Option Card External Fault
The communication option card received an
external fault from the controller.
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input from the controller.
Programming error occurred on the controller side. Examine the operation of the controller program.
Note:
• The drive detects this error if the alarm function on the external device side is operating.
• If the drive detects this error, the terminal assigned to H2-01, H2-02, and H2-03 = 4 [Multi-Function Digital Output 1, Multi-Function Digital Output 2, and Multi-Function
Digital Output 3 = Alarm] will be ON.
• Set the stopping method for this fault in F6-03 [Comm Ext Flt Select (EF0)].
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