8-3
8-2 Alarm Table
8
Troubleshooting
8-2 Alarm Table
If the Servo Drive detects an error, the Alarm Output (ALM) will turn ON, the power drive circuit will
turn OFF, and the alarm code will be displayed. If a warning is detected (torque limit imposed, zero
speed detection, over regeneration, overload, or fan rotation speed error), the Warning Output
(WARN) will turn ON, and the warning will be displayed. (Operation will continue.)
Alarm Indicator on the Servo Drive
The alarm LED indicator on the front of the Servo Drive lights up if an error is detected. The indicator
shows the alarm code by the number of orange and red flashes.
The Warning Output is output only for warnings set in the Warning Output
Selection (Pn09).
Refer to
Error Diagnosis Using the Displayed Alarm Codes
on page 8-6 for
alarm countermeasures.
Reset the alarm using one of the following methods. Be sure to remove the
cause of the alarm before resetting.
Turn ON the Alarm Reset Input (RESET).
Turn OFF the power supply, then turn it ON again.
Perform the Alarm Reset operation on the Parameter Unit.
The following alarms can only be reset by turning OFF the power supply,
then turning it ON again: 14, 15, 18, 21, 23, 36, 37, 48, 49, 95, and 96.
If you reset an alarm while the RUN Command (RUN) is turned ON, the
Servo Drive will start operation as soon as the alarm is reset, which is
dangerous. Be sure to turn OFF the RUN Command (RUN) before
resetting the alarm.
If the RUN Command (RUN) is always ON, ensure safety thoroughly
before resetting the alarm.
Precautions
for Correct Use
Orange: 10s digit, Red: 1s digit
Example:
When an overload alarm (alarm code 16) has occurred and the Unit has stopped,
the indicator will flash 1 time in orange and 6 times in red.
Orange
1 s
Red
0.5 s
0.5 s
1 s
Red
0.5 s
Red
0.5 s
Red
0.5 s
Red
0.5 s
Red
0.5 s
0.5 s
0.5 s
0.5 s
0.5 s
2 s later
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