SMC Networks LECSN-T Series User Manual

8. TROUBLESHOOTING
8 - 55
Alarm No.: 90
Name: Home position return incomplete warning
Alarm content
A home position return did not complete normally with the positioning function.
Detail
No.
Detail name
Cause
Check method
Check result
Action
90.2
Home position
return abnormal
termination
(1)
The proximity dog is not
connected to DOG.
Check if the proximity
dog is connected
correctly.
It is not connected.
Connect it correctly.
It is connected.
Check (2).
(2)
The stroke limit was
detected after the home
position return start.
Check if the stroke limit
is connected correctly.
Or check if the stroke
limit is not reached.
The stroke limit is not
connected.
Or the stroke limit is
reached.
Connect the stroke limit
correctly.
Review the stroke limit
position.
The stroke limit is
connected.
Or the stroke limit is
not reached.
Check (3).
(3)
A home position return
speed did not decelerate
to a creep speed.
Check if the proximity
dog turned off before a
home position return
completed deceleration
to a creep speed.
The proximity dog
turned off before the
deceleration to a
creep speed.
Review the dog position.
Or review the parameter
values of the home
position return speed,
creep speed, and travel
distance after proximity
dog.
(4)
Deceleration from the
home position return
speed/creep speed to
the home position failed
at the indexer method.
Check if the home
position was turned on
before the deceleration
from the home position
return speed/creep
speed to the home
position was
complete.
It was not turned on
before the
deceleration
was complete.
Review the positional
relationship of the stroke
limit and home position.
Or review the parameter
values of the home
position return speed,
creep speed,
deceleration time
constant, and home
position shift distance.
90.5
Z-phase
unpassed
(1)
The Z-phase signal was
not detected normally.
Check if the Z-phase
signal of the servo
motor was detected
normally.
The Z-phase signal
was
not detected.
Review the Z-phase
signal and wirings.
The Z-phase signal
was
detected.
Check (2).
(2)
A home position return
was executed while the
servo motor did not
pass the Z-phase.
Check if the motor
passed the Z-phase
signal until the
proximity
dog turned off after the
home position return
started.
The Z-phase was not
turned on.
Review the setting
position of the home
position return start and
proximity dog.
Alarm No.: 91
Name: driver overheat warning
Alarm content
･
The temperature inside of the driver reached a warning level.
Detail
No.
Detail name
Cause
Check method
Check result
Action
91.1
Main circuit
device overheat
warning
(1)
Ambient temperature of
the driver has
exceeded 55
℃
Check the ambient
temperature.
It is over 55
℃
.
Lower the ambient
temperature.
It is less than 55
℃
.
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.

SMC Networks LECSN-T Series Specifications

General

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