
7. TROUBLESHOOTING
B–63665EN/01
304
This alarm is issued if a fault occurs in any of the fan motors, such as the
stoppage of a fan motor during the operation of the CNC.
Fan motors are installed in the uppermost portion of the CNC control unit.
Each fan motor is attached with an alarm detector circuit, which notifies
the CNC of a fault such as the stoppage of the fan motor, thereby issuing
this alarm.
If this alarm is issued, replace the fan motor.
[For the LCD–mounted type]
For units without option slots
Fan motor
Specifications of fan motors
Ordering
information
Quantity
required
Unit without option slots A02B–0236–K120 Two
Unit with two option slots A02B–0281–K121 Two
Unit with three option slots
A02B–0281–K121 Two
A02B–0236–K122 Two
Unit with four option slots A02B–0281–K121 Four
7.20
ALARM 701
(OVERHEAT: FAN
MOTOR)
Causes and actions
D Fan motors