SMC Networks LECSB2-T Series User Manual

8. TROUBLESHOOTING
8 - 38
Alarm No.: 47
Name: Cooling fan error
Alarm content
・The speed of the driver cooling fan decreased.
・
Or the fan speed decreased to the alarm occurrence level or less.
Detail
No.
Detail name
Cause
Check method
Check result
Action
47.1
Cooling fan stop
error
(1)
Foreign matter was
caught in the cooling
fan.
Check if a foreign
matter is caught in the
cooling fan.
Something has been
caught.
Remove the foreign
matter.
Nothing has been
caught.
Check (2).
(2)
Cooling fan life expired.
Check if the cooling fan
is stopping.
It is stopping.
Replace the driver.
47.2
Cooling fan
speed reduction
error
(1)
Foreign matter was
caught in the cooling
fan.
Check if a foreign
matter is caught in the
cooling fan.
Something has been
caught.
Remove the foreign
matter.
Nothing has been
caught.
Check (2).
(2)
Cooling fan life expired.
Check the cooling fan
speed.
The fan speed is less
than the alarm
occurrence level.
Replace the driver.
Alarm No.: 50
Name: Overload 1
Alarm content
Load exceeded overload protection characteristic of driver.
Detail
No.
Detail name
Cause
Check method
Check result
Action
50.1
Thermal
overload error 1
during
operation
(1)
The servo motor power
cable was
disconnected.
Check the servo motor
power cable.
It is disconnected.
Repair or replace the
servo motor power cable.
It is not
isconnected.
Check (2).
(2)
The connection of the
servo motor is
incorrect.
Check the wiring of
U/V/ W.
It is incorrect.
Connect it correctly.
It is correct.
Check (3).
(3)
The electromagnetic
brake has not released.
(The electromagnetic
brake has been
activated.)
Check if the
electromagnetic brake
is released during
operation.
It is not released.
Release the
electromagnetic brake.
It is released.
Check (4).
(5)
A current was applied to
the driver in excess of its
continuous output
current.
Check the effective
load ratio.
The effective load
ratio is high.
Reduce the load. Or use
a larger capacity motor.
The effective load
ratio is small.
Check (6).
(6)
The servo system is
unstable and resonating.
Check if it is
resonating
It is resonating.
Adjust gains.
It is not resonating.
Check (8).
(7)
The driver is
malfunctioning.
Replace the driver, and
then check the
repeatability.
It is not repeatable.
Replace the driver.
It is repeatable.
Check (9).
(8)
The encoder is
malfunctioning.
Replace the servo
motor encoder, and
then check the
repeatability.
It is not repeatable.
Replace the servo motor
encoder.
50.2
Thermal
overload error 2
during operation
Check it with the check method for [AL. 50.1].
50.3
Thermal
overload error 4
during operation

SMC Networks LECSB2-T Series Specifications

General

Brand	SMC Networks
Model	LECSB2-T Series
Category	DC Drives
Language	English