SMC Networks LECSN-T Series User Manual

8. TROUBLESHOOTING
8 - 48
79.7
Mismatched
input signal
error
(1)
A mismatch of input
signal DI_A and DI_B
continued for a fixed
time ([Pr. PSD18] to [Pr.
PSD23]).
Check if the input
device cable is wired
correctly.
It has a failure.
Review the wiring.
It has no failure.
Check (2).
(2)
An input mismatch time
was not set correctly.
Check the settings of
[Pr.PSD18 Mismatch
permissible time DI1] to
[Pr. PSD23 Mismatch
permissible time
DI6].
The mismatched
time is longer than
the set value.
Set the value longer.
The mismatched
time is shorter than
the set value.
Check (3).
(3)
The functional safety
unit is malfunctioning.
Replace the functional
safety unit, and then
check the repeatability.
It is not
repeatable.
Replace the functional
safety unit.
It is repeatable.
Check (4).
(4)
Something near the
device caused it.
Check the noise,
ambient
temperature, etc.
There is a problem
in the surrounding.
Take countermeasures
against its cause.
79.8
Position
feedback fixing
error
(1)
The position feedback
data do not change
within the position
feedback fixing error
detection time [Pr.
PSA22].
Check the [Pr. PSA22]
setting.
It is not set
correctly.
Review the parameter.
It is set correctly.
Check (2).
(2)
The position feedback
data do not change.
Check the feedback
data by rotating the
servo motor.
The position
feedback
data changes.
Perform an operation
which rotates the servo
motor within the position
feedback fixing error
detection time [Pr.
PSA22].
The position
feedback
data do not
change.
Check (3).
(3)
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 (4).
(4)
The functional safety
unit is malfunctioning.
Replace the functional
safety unit, and then
check the
repeatability.
It is not
repeatable.
Replace the functional
safety unit.
Alarm No.: 7A
Name: Parameter setting error (safety observation function)
Alarm content
・
A parameter of the functional safety unit failed.
Detail
No.
Detail name
Cause
Check method
Check result
Action
7A.1
Parameter
verification error
(safety
observation
function)
(1)
A parameter of the
functional safety unit is
incorrect.
Review the parameter.
It is not
repeatable.
Set the parameter
correctly.
It is repeatable.
Check (2).
(2)
The functional safety
unit is malfunctioning.
Replace the functional
safety unit, and then
check the repeatability.
It is not
repeatable.
Replace the functional
safety unit.
It is repeatable.
Check (3).
(3)
Something near the
device caused it.
Check the noise, ambient
temperature, etc.
There is a problem
in the surrounding.
Take countermeasures
against its cause.
7A.2
Parameter
setting range
error (safety
observation
function)
(1)
The initial settings for
the functional safety
unit have not been
finished.
Check the [Pr. PSA01]
setting.
It is not enabled.
Enable the setting with
checking parameter
contents.
It is enabled.
Check (2).
(2)
A parameter of the
functional safety unit
was set out of range.
Check the value of set
parameters.
It is out of setting
range.
Set it within the range.

SMC Networks LECSN-T Series Specifications

General

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