SMC Networks LECSN-T Series User Manual

8. TROUBLESHOOTING
8 - 41
servo motor is
rotating Servo-on is
not enabled while the
linear servo motor is
moving.
(14)
The encoder or the
servo motor is
malfunctioning.
Replace the servo
motor,and then check
the repeatability.
It is not repeatable.
Replace the servo motor.
It is repeatable.
Check (15).
(15)
The driver is
malfunctioning.
Replace the driver, and
then check the
repeatability.
It is not repeatable.
Replace the driver.
52.3
Excess droop
pulse 2
Check it with the check method for [AL. 52.1].
52.4
Error excessive
during 0 torque
limit
(1)
The torque limit has
been 0.
Check the torque limit
value.
The torque limit has
been 0.
Do not input a command
while the torque limit
value is 0.
52.5
Excess droop
pulse 3
Check it with the check method for [AL. 52.1].
Alarm No.: 54
Name: Oscillation detection
Alarm content
・
An oscillation of the servo motor was detected.
Detail
No.
Detail name
Cause
Check method
Check result
Action
54.1
Oscillation
detection error
(1)
The servo system is
unstable and oscillating.
Check if the servo
motor is oscillating.
Check the
torque ripple with
setup software (MR
Configurator2
TM
).
The torque ripple is
vibrating.
Adjust the servo gain
with the auto tuning. Set the
machine resonance
suppression filter.
The torque ripple is
not vibrating.
Check (2).
(2)
The resonance
frequency has changed
due to deterioration.
Measure the resonance
frequency of the
equipment and
compare it with the
setting value of the
machine resonance
suppression filter.
The resonance
frequency of the
equipment is different
from the filter setting
value.
Change the setting value of
the machine
resonance suppression filter.
The resonance
frequency of the
equipment is the
same as the filter
setting value.
Check (3).
(3)
The encoder is
malfunctioning.
Replace the servo
motor, and then check
the repeatability.
It is not repeatable.
Replace the servo motor.
Alarm No.: 56
Name: Forced stop error
Alarm content
・
The servo motor does not decelerate normally during forced stop deceleration.
Detail
No.
Detail name
Cause
Check method
Check result
Action
56.2
Over speed
during forced
stop
(1)
The forced stop
deceleration time
constant is short.
[Pr. PC51]
Increase the parameter
setting value, and then
check the
repeatability.
It is not repeatable.
Adjust the deceleration
time constant.
It is repeatable.
Check (2).
(2)
The torque limit has
been enabled.
Check if the limiting
torque is in progress.
The limiting torque is
in
progress.
Review the torque limit
value.
The limiting torque is
not
in progress.
Check (3).
(3)
The servo system is
unstable and
oscillating.
Check if the servo
motor
is oscillating. Check the
torque ripple with
setup software (MR
Configurator2
TM
).
The torque ripple is
vibrating.
Adjust the servo gain.
Set the machine
resonance suppression
filter.
The torque ripple is
not vibrating.
Check (4).
(4)
The encoder is
malfunctioning.
Replace the servo
motor, and
then check the
repeatability.
It is not repeatable.
Replace the servo motor.

SMC Networks LECSN-T Series Specifications

General

Brand	SMC Networks
Model	LECSN-T Series
Category	Controller
Language	English