SMC Networks LECSN-T Series User Manual

8. TROUBLESHOOTING
8 - 16
magnetic contactor
control connector of the
converter unit was
disconnected.
contactor control
connector of the
converter unit.
It has no failure.
It is disconnected.
(4)
For the drive unit, the
bus bar between the
converter unit and drive
unit was disconnected
Check the bus bar
between the converter
unit and drive unit.
It is disconnected.
Connect it correctly.
It has no failure.
Check (5).
(5)
The voltage of the main
circuit power supply is
low.
Check if the voltage of
the main circuit power
supply is the
prescribed
value or lower.
160 V AC
The voltage is the
prescribed value or
lower.
Increase the voltage of
the main circuit power
supply.
The voltage is higher
than the prescribed
value.
Check (6).
(6)
The alarm has occurred
during acceleration.
Check if the bus
voltage during
acceleration is lower
than the prescribed
value.
200 V DC
The voltage is lower
than the prescribed
value.
Increase the acceleration
time constant. Or
increase the power
supply capacity.
The voltage is equal
to or higher than the
prescribed value.
Check (7).
Alarm No.: 12
Name: Memory error 1 (RAM)
Alarm content
A part (RAM) in the driver is failure.
Detail
No.
Detail name
Cause
Check method
Check result
Action
12.1
RAM error 1
(1)
A part in the driver is
failure.
Disconnect the cables
except for the control
circuit power supply,
and then check the
repeatability
It is repeatable.
Replace the driver.
It is not repeatable
Check (2).
(2)
Something near the
device caused it.
Check the power
supply for noise.
There is a problem in
the surrounding
Take countermeasures
against its cause.
12.2
RAM error 2
Check it with the check method for [AL. 12.1].
12.3
RAM error 3
12.4
RAM error 4
12.5
RAM error 5
12.6
RAM error 6
Alarm No.: 13
Name: Clock error
Alarm content
A part in the servo driver.
・A clock error transmitted from the controller occurred.
Detail
No.
Detail name
Cause
Check method
Check result
Action
13.1
Clock error 1
(1)
A part in the driver is
failure.
Disconnect the cables
except for the control
circuit power supply,
and then check the
repeatability.
It is occurring.
Replace the driver.
(2)
Something near the
device caused it.
Check the power
supply for noise.
Check if the connector
is shorted.
There is a problem in
the surrounding.
Take ountermeasures
against its cause.
13.2
Clock error 2
Check it with the check method for [AL. 13.1].

SMC Networks LECSN-T Series Specifications

General

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