Mitsubishi Electric Melservo-J4 Instruction Manual page 66

Alarm No.: 46
Alarm content
Detail Detail name
No.
46.2 Abnormal
temperature of
servo motor 2
46.3 Thermistor
disconnected
error
46.4 Thermistor
circuit error
46.5 Abnormal
temperature of
servo motor 3
46.6 Abnormal
temperature of
servo motor 4
1 TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
64
1.4 Remedies for alarms
Name: Servo motor overheat
 The servo motor overheated.
Cause Check method
(1) Ambient temperature of Check the ambient
the linear servo motor temperature of the linear
or direct drive motor has servo motor or direct
exceeded 40 .
drive motor.
(2) The linear servo motor Check the effective load
or direct drive motor has ratio.
been under overload
status.
(1) In the parallel drive Check the settings of [Pr.
system, the parameter PF37 Parallel drive -
settings and the axis Encoder ID setting 1].
number settings are Check if the setting of
incorrect. [Pr. PF40 Parallel drive -
Servo motor side system
setting] matches the
setting of the axis
number set with the
combination of SW2-3,
SW2-4, and SW1.
(2) In the parallel drive Check if the encoder
system, the encoder cable from the servo
cable from the servo motor is connected to the
motor is not connected encoder master servo
to the encoder master amplifier.
servo amplifier.
(3) A thermistor wire is not Check the thermistor
connected. wire.
(4) The encoder cable MR- Check the model of the
ENECBL_M-H for HF- encoder cable.
JP series servo motors
is used for the HG-
JR22K1M(4) servo
motor.
(5) The thermistor wire is Check the thermistor
disconnected. wire.
(1) A thermistor circuit of Replace the servo
the servo amplifier is amplifier, and then check
malfunctioning. the repeatability.
Check it with the check method for [AL. 46.1].
(1) A current was applied to Check the effective load
the servo amplifier in ratio.
excess of its continuous
output current.
Check result Action
It is over 40 .
Lower the ambient
temperature.
It is less than 40 .
Check (2).
The effective load ratio is Reduce the load or
high. review the operation
pattern.
The effective load ratio is Replace the servo motor.
small.
It is not set correctly. Set the parameter and
the axis number
correctly.
It is set correctly. Check (2).
It is not connected. Connect the encoder
cable of the servo motor
to the encoder master
servo amplifier.
Connect the encoder
master servo amplifier
and the encoder slave
servo amplifier in the
order of the axis number.
It is connected. Check (3).
It is not connected. Connect it correctly.
It is connected. Check (4).
MR-ENECBL_M-H is Change it to MR-
used. ENECBL_M-H-MTH.
MR-ENECBL_M-H-MTH Check (5).
is used.
It is disconnected. Repair the lead wire.
It is not disconnected. Replace the servo motor.
It is not repeatable. Replace the servo
amplifier.
The effective load ratio is Reduce the load or
high. review the operation
pattern. Or use a larger
capacity motor.
Target
[A]
[B]
[WB]
[GF]
[A]
[B]
[WB]
[GF]
[A]
[B]
[WB]
[RJ010]
[GF]