Diagnosing And Resetting Faults; Diagnosing And Resetting Faults; Fault Occurs Simultaneously With Power Loss; If The Drive Still Has Power After A Fault Occurs - YASKAWA V1000 Technical Manual

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.
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.
Use monitor parameters U2-oo 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.
After Fault on page 279
Note: When the fault continues to be displayed after cycling power, remove the cause of the fault and reset.
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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 253
3.
Reset the fault. Refer to Fault Reset Methods on page
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Viewing Fault Trace Data After Fault

Step
Turn on the drive input power. The first screen
1.
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 most recent fault (here, EF3).
6. Press to view drive status information when
fault occurred.
Parameters U2-03 through U2-17 help determine
7.
cause of fault.
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Fault Reset Methods

After the Fault Occurs
Fix the cause of the fault, restart the
drive, and reset the fault
Fix the cause of the fault and reset via
Fault Reset Digital Input S4.
If the above methods do not reset the fault, turn off the drive main power supply. Reapply
power after LED operator display is out.
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
for information on how to view fault trace data.
Display/Result
Procedure
Press on the digital operator.
Close then open the fault signal digital input via
terminal S4. S4 is set fault reset as default (H1-04
= 12)

6.8 Diagnosing and Resetting Faults

Refer to Viewing Fault Trace Data
279.
STOP
STOP
to
Fault Reset Switch
2
1
STOP
Drive
S4 Fault Reset Digital Input
SC Digital Input Common
ON
OFF
279
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