SMC Networks LECSN-T Series User Manual

8. TROUBLESHOOTING
8 - 44
Alarm No.: 66
Name: Encoder initial communication error (safety observation function)
Alarm content
・The connected encoder is not compatible with the driver.
・
An error has occurred in the communication between an encoder and driver.
Detail
No.
Detail name
Cause
Check method
Check result
Action
66.1
Encoder initial
communication
- Receive data
error 1 (safety
observation
function)
(1)
An encoder cable is
malfunctioning.
Check if the encoder
cable is disconnected
or shorted.
It has a failure.
Replace or repair the cable.
It has no failure.
Check (2).
(2)
The driver is
malfunctioning.
Replace the driver, and
then check
the repeatability.
It is not
repeatable.
Replace the driver.
It is repeatable.
Check (3).
(3)
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 (4).
(4)
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.
66.2
Encoder initial
communication
- Receive data
error 2 (safety
observation
function)
Check it with the check method for [AL. 66.1].
66.3
Encoder initial
communication
- Receive data
error 3 (safety
observation
function)
66.7
Encoder initial
communication
- Transmission
data error 1
(safety
observation
function)
Alarm No.: 66
Name: Encoder initial communication error (safety observation function)
Alarm content
・The connected encoder is not compatible with the driver.
・
An error has occurred in the communication between an encoder and driver
Detail
No.
Detail name
Cause
Check method
Check result
Action
66.9
Encoder initial
communication
- Process error
1 (safety
Observation
function)
(1)
A servo motor with
functional safety is not
connected.
Check if a servo motor
with functional safety is
connected.
It is not a servo motor
with functional safety.
Connect a servo motor with
functional safety.
It is a servo motor
with functional safety.
ICheck (2).
functional safety.
(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)
The driver is
malfunctioning.
Replace the driver, and
then check the
repeatability.
It is not repeatable.
Replace the driver.
It is repeatable.
Check (4).
(4)
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 (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.

SMC Networks LECSN-T Series Specifications

General

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