8 - 17
8. TROUBLESHOOTING
Alarm No.: A.45
Name: Main circuit device overheat
Description
Overheat in servo amplifier.
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) Servo amplifier fault
Check if the alarm
occurs after replacing
the servo amplifier.
Alarm does not
occur.
Use the normal servo
amplifier.
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 using the
status display or MR
Configurator.
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.
Summary of Contents for MELSERVO-JN Series
Page 31: ... 22 MEMO ...
Page 49: ...2 6 2 INSTALLATION MEMO ...
Page 181: ...5 30 5 DISPLAY AND OPERATION SECTIONS MEMO ...
Page 199: ...6 18 6 GENERAL GAIN ADJUSTMENT MEMO ...
Page 303: ...11 46 11 OPTIONS AND PERIPHERAL EQUIPMENT MEMO ...
Page 351: ...12 48 12 SERVO MOTOR MEMO ...
Page 445: ...13 94 13 POSITIONING MODE MEMO ...