6.7 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 133.
3.
Reset the fault. Refer to Fault Reset Methods on page 146.
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).
u
Fault Reset Methods
After the Fault Occurs Procedure
Fix the cause of the fault, restart the
drive, and reset the fault
Press on the digital operator.
Fix the cause of the fault and reset via
Fault Reset Digital Input S4.
Close then open the fault signal digital input via
terminal
S4. S4 is set fault reset as default (H1-04
= 12)
Fault Reset Switch
Drive
S4 Fault Reset Digital Input
SC Digital Input Common
If the above methods do not reset the fault, turn off the drive main power supply. Reapply
power after LED operator display is out.
ON
OFF
2
1
6.7 Diagnosing and Resetting Faults
146
YASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manual
http://nicontrols.com
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