Mitsubishi Electric MELSERVO-JE MR-JE-100A, Instruction Manual

Page: 237 / 310

8. TROUBLESHOOTING
8 - 16
Alarm No.: 45 Name: Main circuit device overheat
Alarm content Inside of the servo amplifier overheated.
Display Detail name Cause Check method Check result Action
45.1 (1) Ambient temperature has
exceeded 55 ˚ C.
Check the ambient
temperature. It is over 55 ˚ C. Lower the ambient
temperature. Main circuit
device
overheat error
It is less than 55 ˚ C. Check (2).
(2) The close mounting is
out of specifications.
Check the specifications
of close mounting. It is out of specifications. Use within the range of
specifications.
It is within specifications. Check (3).
(3) It occurred. Check operation pattern. Turning on and off were
repeated under the
overload status. Check if the overload
status occurred many
times.
It did not occur. Check (4).
(4) It is not repeatable. Clean it periodically. A cooling fan, heat sink,
or openings is clogged
with foreign matter. Clean the cooling fan,
heat sink, or openings,
and then check the
repeatability.
It is repeatable. Check (5).
(5) The servo amplifier is
malfunctioning.
Replace the servo
amplifier, and then check
the repeatability. It is not repeatable. Replace the servo
amplifier.
Alarm No.: 46 Name: Servo motor overheat
Alarm content The servo motor overheated.
Display Detail name Cause Check method Check result Action
46.1 (1) It is over 40 ˚ C. Lower the ambient
temperature. Abnormal
temperature of
servo motor 1 Ambient temperature of
the servo motor has
exceeded 40
˚ C.
Check the ambient
temperature of the servo
motor.
It is less than 40 ˚ C. Check (2).
(2) Servo motor is
overloaded.
Check the effective load
ratio. The effective load ratio is
high. Reduce the load or
review the operation
pattern.
The effective load ratio is
small. Check (3).
(3) The thermal sensor in
the encoder is
malfunctioning.
Check the servo motor
temperature when the
alarm occurs. The servo motor
temperature is low. Replace the servo motor.
46.5 Abnormal
temperature of
servo motor 3
Check it with the check method for [AL. 46.1].
46.6 Abnormal
temperature of
servo motor 4
(1) A current was applied to
the servo amplifier in
excess of its continuous
output current.
Check the effective load
ratio. The effective load ratio is
high. Reduce the load or
review the operation
pattern. Or use a larger
capacity motor.