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8. TROUBLESHOOTING
Alarm No.: A.32
Name: Overcurrent
Description
The flowed current is higher than the permissible current of the driver.
Detailed
display
Detailed
Name
Cause
Checking method
Result
Action
32.2
Overcurrent
was
detected by
the software
detection
(during
operation)
1) High servo gain
Check if the oscillation
occurs.
Oscillation occurs.
Decrease the speed loop
gain.
Oscillation does not
occur.
Check 2).
2) Driver fault
Check if the alarm
occurs even if the
power cables (U, V, W)
are disconnected.
Alarm occurs.
Replace the driver.
Alarm does not
occur.
Check 3).
3) Ground fault or other fault
in the servo motor power
cables
Check if the power
cables themselves are
shorted.
Cables are shorted. Replace the power cables.
No problem.
Check 4).
4) Servo motor fault
Remove the power
cables from the servo
motor edge and check
if short occurs
(between U, V, W and
).
Ground fault occurs
in the servo motor
Replace the servo motor.
Ground fault does
not occur in the
servo motor
Check 5).
5) Fault in the surrounding
environment
Check the noise, etc.
An error is found.
Take the appropriate
measures according to the
cause.
32.3
Overcurrent
was
detected by
the hardware
detection
circuit
(during a
stop)
1) Driver fault
Execute the checking methods mentioned in the alarm display "32.2".
2) Ground fault or other fault
in the servo motor power
cables
3) Servo motor fault
4) Fault in the surrounding
environment
32.4
Overcurrent
was
detected by
the software
detection
(during a
stop)
1) High servo gain
Execute the checking methods mentioned in the alarm display "32.2".
2) Driver fault
3) Ground fault or short of
the servo motor power
cables
4) Servo motor fault
5) Fault in the surrounding
environment
