SMC Networks LECSN-T Series User Manual

8. TROUBLESHOOTING
8 - 49
7A.3
Parameter
combination
error (safety
observation
function)
(1)
A parameter of the
functional safety unit or
driver is
incorrect.
Check the parameter
settings of the functional
safety unit and driver.
Functional safety unit:
[Pr. PSA02], [Pr. PSA18]
to [Pr. PSA21], [Pr.
PSC03], [Pr. PSD01] to
[Pr. PSD17], [Pr. PSD26]
driver:[Pr. PA14]
It is not set
correctly.
Set the parameter
correctly.
7A.4
Functional
safety unit
combination
error (safety
observation
function)
(1)
A combination of
functional safety unit
and driver is
incorrect.
Check if correct
combination of driver is
connected.
A different driver
is connected
Return to the driver which
was combined with the
functional safety unit and
was set the safety
observation function, or
initialize the setting.
Alarm No.: 7B
Name: Encoder diagnosis error (safety observation function)
Alarm content
Error occurred in encoder.
Detail
No.
Detail name
Cause
Check method
Check result
Action
7B.1
Encoder
diagnosis error
1 (safety
observation
function)
(1)
An encoder cable is
malfunctioning.
Check if the encoder
cable is disconnected
or shorted.
It has a failure.
Repair or replace the
cable.
It has no failure.
Check (2).
(2)
An encoder is
malfunctioning.
Replace the servo
motor,and then check
the repeatability.
It is not repeatable.
Replace the servo motor.
It is repeatable.
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)
The driver is
Replace the driver, and
then check
the repeatability.
It is not repeatable.
Replace thedriver.
It is repeatable.
Check (5).
(5)
Something near the
device caused it.
Check the noise,
ambient temperature,
vibration, etc.
There is a problem in
the surrounding.
Take countermeasures
against its cause.
7B.2
Encoder
diagnosis error
2 (safety
observation
function)
Check it with the check method for [AL. 7B.1].
7B.3
Encoder
diagnosis error
3 (safety
observation
function)
7B.4
Encoder
diagnosis error
4 (safety
observation
function)
(1)
Ambient temperature of
the encoder has
exceeded 40
℃
.
Check the ambient
temperature of the
encoder.
It is over 40
℃
.
Lower the ambient
temperature.
It is 40 ℃ .or less.
Check (2).
(2)
Ambient temperature of
the encoder is less than
0
℃
..
Check the ambient
temperature of the
encoder.
It is 0 ℃ or more.
Increase the ambient
temperature.
It is 0 ℃ or more.
Check (3).
(3)
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 (4).
(4)
The thermal sensor in
the encoder is
malfunctioning.
Replace the servo
motor, and then check
the repeatability.
It is not repeatable.
Replace the servo motor.
It is repeatable.
Check (5).
(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.

SMC Networks LECSN-T Series Specifications

General

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