SMC Networks LECSN-T Series - Page 322

8. TROUBLESHOOTING
8 - 57
(safety
observation
function)
Fixingdiagnosis
Execution selection at
start-up" was not
executed.
Fixing-diagnosis
execution selection at
start-up" was
executed
It was executed.
Check (2).
(2)
Set "Input device -
Fixing-diagnosis
execution selection at
start-up" correctly using
parameters.
Check if [Pr. PSD27]
and [Pr. PSD28] are
set correctly.
It is not set
correctly.
Review the parameter
It is set correctly.
Check (3).
(3)
The wiring is
incorrect.
Check if the wiring has
a failure.
It has a failure.
Review the wiring.
It has no failure.
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.
It is repeatable.
Check (5).
(5)
Something near the
device caused it.
Check the noise,
ambient
temperature, etc.
There is a problem in
the surrounding.
Take countermeasures
against its cause.
95.4
STO warning 2
(safety
observation
function)
(1)
The test operation
mode was not set
correctly.
Check if the driver and
functional
safety unit are set to
the test operation
mode.
It is not set.
Set it correctly.
It is set.
Check (2).
(2)
An error occurred in the
safety communication.
Or the network is
disconnected.
Check the description
"The display shows
"Ab"." .
⇒Page 124 Trouble
which does not trigger
alarm/warning
It is not repeatable.
Take countermeasures
against its cause.
It is repeatable.
Check (3).
(3)
"Input mode selection"
in [Pr. PSA02
Functional safety unit
setting] is not set
correctly.
Set [Pr. PSA02]
correctly
and check the
repeatability.
It is not repeatable.
Review the parameter.
It is repeatable.
Check (4).
(4)
The driver is
malfunctioning.
Replace the driver, and
then check
the repeatability.
It is not repeatable.
Replace the driver.
It is repeatable.
Check (7).
(5)
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 (8).
(6)
Something near the
device caused it.
Check the noise,
ambient
temperature, etc.
There is a problem in
the surrounding.
Take countermeasures
against its cause.
95.5
STO warning 3
(safety
observation
function)
(1)
STO command/SS1
command of the
functional safety unit
was turned off
(enabled) under the
following speed
conditions.
1) Servo motor speed:
50 r/min or less
Check if STO
command/
SS1 command of the
functional safety unit is
off (enabled).
It is off (enabled).
Turn on (disabled) STO
command/SS1 command
of the functional safety
unit.
Alarm No.: 96
Name: Home position setting warning
Alarm content
Home position setting could not be made.
Detail
No.
Detail name
Cause
Check method
Check result
Action
96.1
In-position
warning at
home
positioning
(1)
INP (In-position) did not
turn on within the
specified time during
home positioning.
Check the droop
pulses during home
positioning.
It is In-position range
or more.
Adjust gains to set droop
pulses within the Inposition
range. Remove
the cause of droop pulse
occurrence, and make
home position setting.
96.2
Command input
warning at
home
positioning
(1)
A command has
already inputted at the
time of home positioning.
Check if a command is
inputted at home
positioning.
A command is
inputted.
Set it after home
positioning.
A command is not
inputted.
Check (2).
(2)
Creep speed is high.
Decrease the creep
speed, and then check
It is not repeatable.
Decelerate the creep
speed, and make home