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8. TROUBLESHOOTING
Alarm No.: A.45
Name: Main circuit device overheat
Description
Overheat in driver.
Detailed
display
Detailed
Name
Cause
Checking method
Result
Action
45.1
Board
temperature
error
1) Ambient temperature is
over 55
.
Check if the ambient
temperature is 55
or
less.
Ambient
temperature is over
55
.
Lower the ambient
temperature.
Ambient
temperature is 55
or less.
Check 2).
2) Used beyond the
specifications of close
mounting.
Check the
specifications of close
mounting.
Used beyond the
specifications.
Use within the range of
specifications.
Satisfying the
specifications.
Check 3).
3) The power was turned on
and off continuously in
overloaded status.
Check if the overloaded
status occurred
repeatedly.
Occurred
repeatedly.
Check operation pattern.
Not occurred.
Check 4).
4) Heat sink and opening are
clogged.
Check if the alarm
occurs after cleaning
the heat sink and the
opening.
Alarm does not
occur.
Clean periodically.
Alarm occurs.
Check 5).
5) Driver fault
Check if the alarm
occurs after replacing
the driver.
Alarm does not
occur.
Use the normal driver.
Alarm No.: A.46
Name: Servo motor overheat
Description
Servo motor is overheated.
Detailed
display
Detailed
Name
Cause
Checking method
Result
Action
46.1
Servo motor
temperature
error
1) Ambient temperature of
the servo motor is over
40
.
Check the ambient
temperature of the
servo motor.
Ambient
temperature is over
40
.
Lower the ambient
temperature of servo
motor.
Ambient
temperature is 40
or less.
Check 2).
2) Servo motor is
overheated.
Check the effective
load ratio.
The effective load
ratio is too high.
Reduce the load or take
heat dissipation measures.
The effective load
ratio is small
Check 3).
3) Thermal sensor fault in the
encoder.
Check the temperature
of the servo motor.
The temperature of
the servo motor is
low.
Replace the servo motor.