5.7 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.
u
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.
Remove the cause of the fault and reset.
Note: 1
.
To find out what faults were
triggered, Check U2-02 (Fault History) to determine the faults
that have been triggered.
2
.
If the fault continues to be displayed after cycling power, remove the cause of the fault and
reset.
u
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 137.
3.
Reset the fault. Refer to Fault Reset Methods on page 155.
u
Viewing Fault History Data After Fault
Step Display/Result
1. Turn on the drive input power. The first screen displays.
STOP
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 previous fault (here, EF3).
5.7 Diagnosing and Resetting Faults
154
YASKAWA ELECTRIC TOEP C710606 25D YASKAWA AC Drive J1000 Installation & Start-Up Manual
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