
5.TROUBLESHOOTING B-70254EN/01
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No. Cause of trouble Solution
3 Loose fixing parts of
electrode
4 Leakage in the
vacuum system or
leakage of water
5 The gas flow control
value is closed
6 Anomaly of
matching box
7 Crack or pinhole in
discharge tube
It is necessary to replace or adjust the part.
Call the FANUC service center.
ALM No.4067
Overheating laser oscillator housing
The temperature of the input side of the electrode cooling fan is
monitored and sends alarm when it exceeds 60°C. When the
temperature decreases, the alarm state is solved automatically.
Before that it cannot be reset. (The C1000iA does not have the
sensor.)
No. Cause of trouble Solution
1 Excessive environmental
temperature
Lower the ambient temperature by ventilation
(5 to 30 )
2 Excessive cooling water
temperature
Set the temperature of the cooling water to
within an appropriate range (20 to 30 ).
3 Anomaly of cooling fan
motor
4 Anomaly of temperature
sensor
5 Anomaly of oscillator IF
PCB(A16B-2100-0141)
6 Anomaly of connecting
cables between the
PCBs.
It is necessary to replace or adjust the part.
Call the FANUC service center.
ALM No.4068
Too much incident laser beam back to the resonator..
This alarm is issued, if a workpiece reflects laser beam more
than the rating to the laser oscillator. This can happen when the
laser beam is used to drill, cut, or weld materials (such as copper,
brass, and aluminum) having a high reflectivity to the laser beam
(10.6 µm).
Cause of trouble Solution
1 Excessive returning
beam back into the
resonator
Lower the output specified in the command, or
take an action to reduce the reflected laser
beam.
2 Anomaly of parameter for
alarm detection
Check the settings of parameter Nos. 15265
and 15266 with the corresponding values in the
parameter table attached to the unit.
3 Anomaly of parameter for
output power table
Check the settings of parameter Nos.15280 to
15308 with the corresponding values in the
parameter table attached to the unit.