SMC Networks LECSB2-T Series User Manual

8. TROUBLESHOOTING
8 - 37
Alarm No.: 46
Name: Servo motor overheat
Alarm content
・
The servo motor overheated.
Detail
No.
Detail name
Cause
Check method
Check result
Action
46.1
Abnormal
temperature of
servo motor 1
(1)
Ambient temperature of
the servo motor has
exceeded 40
℃
.
Check the ambient
temperature of the
servomotor.
It is over 40
℃
Lower the ambient
temperature.
It is less than 40
℃
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.
46.3
Thermistor
disconnected
error
(1)
In the parallel drive
system, the parameter
settings and the axis
number settings are
incorrect.
Check the settings of
[Pr.PF37 Parallel drive
-Encoder ID setting 1].
Check if the setting of
[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.
It is not set
correctly.
Set the parameter and the
axis number
correctly.
It is set correctly.
Check (2).
(2)
In the parallel drive
system, the encoder
cable from the servo
motor is not connected
to the encoder master
driver.
Check if the encoder
cable from the servo
motor is connected to
the encoder master
driver.
It is not connected.
Connect the encoder
cable of the servo motor to
the encoder master
driver.Connect the encoder
master driver and the
encoder slave driver in the
order of the axis number.
It is connected.
Check (3).
(3)
A thermistor wire is not
connected.
Check the thermistor
wire.
It is not connected.
Connect it correctly.
It is connected.
Check (4).
(5)
The thermistor wire is
disconnected.
Check the thermistor
wire.
It is disconnected.
Repair the lead wire.
It is not
disconnected.
Replace the servo motor.
46.4
Thermistor
circuit error
(1)
A thermistor circuit of
the driver is
malfunctioning.
Replace the driver, and
then check the
repeatability
It is not repeatable.
Replace the driver.
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 driver 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.

SMC Networks LECSB2-T Series Specifications

General

Brand	SMC Networks
Model	LECSB2-T Series
Category	DC Drives
Language	English