
B–70114EN/04
6. TROUBLESHOOTING
155
Invertor frequency reached signal abnormal
This alarm is issued, if a frequency reached signal (bit 1 of DGN 962, 963,
and 964) is not received within 120 seconds after the turbo blower is
started.
No. Cause of trouble Solution
1 Cable connection abnormal
Call the FANUC service center.
2 Invertor abnormal
3 Invalid invertor setting
Turbo blower abnormal vibration
This alarm is issued, if the turbo blower vibrates abnormally (if the
monitored vibration exceeds the permissible level).
Call the FANUC service center.
Turbo blower running
This alarm is issued, if the turbo blower does not stop within 120 seconds
after the RUN OFF is pressed. When this alarm is issued, it becomes
possible to switch off the power without purging.
Invalid invertor setting.
Call the FANUC service center.
Turbo blower overcurrent
This alarm is issued, if the overcurrent sensor in the sensor unit detects
an abnormal condition.
Call the FANUC service center.
Turbo blower temperature abnormal
This alarm is issued, if the temperature of the turbo blower motor winding
becomes higher than the permissible level.
Call the FANUC service center.
Low turbo blower oil
This alarm is issued, if the amount of oil in the turbo blower decreases.
Stop the oscillator, and check the oil level with the oil gauge on the turbo
blower.
No. Cause of trouble Solution
1 The oil level is lower than
specified.
Replenish the turbo blower with oil until
the oil level on the oil gauge is between
H and L. Replace the oil every 4
months of use or every 1000 hours of
operation, whichever is earlier.
2 Invalid sensor setting
Call the FANUC service center.
3 Sensor abnormal
Alarm No.
4101, 4111 [––]
Alarm No.
4102, 4112 [––]
Alarm No.
4103, 4113 [––]
Alarm No.
4104, 4114 [––]
Alarm No.
4105, 4115 [––]
Alarm No. 4106 [620]