6.8 Diagnosing and Resetting Faults
YASKAWA ELECTRIC
SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
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6.8 Diagnosing and Resetting Faults
When a fault occurs and the drive stops, follow the instructions below to remove whatever conditions triggered the fault,
then restart the drive.
◆
Fault Occurs Simultaneously with Power Loss
WARNING!
Electrical Shock Hazard. Ensure there are no short circuits between the main circuit terminals (R/L1, S/L2, and T/L3) or
between the ground and main circuit terminals before restarting the drive. Failure to comply may result in serious injury or death and
will cause damage to equipment.
1.
Turn on the drive input power.
2.
Use monitor parameters U2-
to display data on the operating status of the drive just before the fault
occurred.
3.
Remove the cause of the fault and reset.
Note:
To find out what faults were triggered, check U2-02 (Fault History). Information on drive status when the fault occurred such as
the frequency, current and voltage, can be found in U2-03 through U2-17.
Refer to Viewing Fault Trace Data After Fault on
for information on how to view fault trace data.
Note:
When the fault continues to be displayed after cycling power, remove the cause of the fault and reset.
◆
If the Drive Still has Power After a Fault Occurs
1.
Look at the LED operator for information on the fault that occurred.
2.
Refer to Fault Displays, Causes, and Possible Solutions on page 243
3.
Refer to Fault Reset Methods on page 270
◆
Viewing Fault Trace Data After Fault
Step
Display/Result
1.
Turn on the drive input power. The first screen displays.
2.
Press
until the monitor screen is displayed.
3.
Press
to display the parameter setting screen.
4.
Press
and > until U2-02 (Fault History) is
displayed.
5.
Press
to view the previous fault (here, EF3).
6.
Press
to view drive status information when fault
occurred.
7.
Parameters U2-03 through U2-17 help determine cause of
fault.
STOP
to
