SMC Networks LECSN-T Series User Manual

8. TROUBLESHOOTING
8 - 66
8.7 Trouble which does not trigger an alarm/warning
Refer to this section and Trouble which does not trigger alarm/warning, remove the cause of the trouble.
Description
Cause
Checkpoint
Action
The servo motor does not
operate.
The connection of the servo
motor is incorrect.
Check the wiring of U/V/W.
Connect them correctly.
The servo motor power cable
is connected to the driver of
a different axis.
Check if the encoder cable
and the servo motor power
cable are connected to the
same driver.
Connect the encoder cable
and the servo motor power
cable correctly.
An alarm or warning is
occurring.
Check if an alarm or warning
is occurring.
Check the contents of the
alarm/warning, and remove
its cause.
The system is in the test
operation mode.
Check if the test operation
select switch is on (up).
Cancel the test operation
mode.
The motor-less operation is
enabled.
Check the value set in [Pr.
PC05].
Disable the motor-less
operation.
The torque is insufficient due
to large load.
Check instantaneous torque
using Setup software (MR
Configurator2
TM
) if the load
exceeds the maximum
torque or torque limit value.
Reduce the load or use a
servo motor with a larger
capacity.
An unintended torque limit is
enabled.
Check if the torque limit is
enabled.
Cancel the torque limit.
The setting value for the
torque limit is incorrect.
Check if the torque limit
value is "0" with [Pr. PA11],
[Pr. PA12] or the setting on
the upper side side.
Set it correctly.
A machine is interfering with
the servo motor.
Check if a machine is
interfering.
Remove the interference.
For a servo motor with a
lock, the lock has not been
released.
Check the power supply of
the lock.
Turn on the lock power.
LSP (Forward rotation stroke
end) and LSN (Reverse
rotation stroke end) are not
on.
Check if [AL. 99] is
occurring.
Turn on LSP and LSN.
The setting of the control
mode is incorrect.
Check the [Pr. PA01] setting.
Set it correctly.
The setting of the electronic
gear is incorrect.
Check the setting of the
electronic gear.
Set a proper value of the
electronic gear.
The setting of point tables is
incorrect.
Check the setting of the
point table.
Review the setting of the
point table.
The setting of the point table
command is incorrect.
Check the setting of the
point table command (Target
point table).
Review the setting of the
point table command.
The setting of the next
station position is incorrect.
Check the setting of the next
station position (Target point
table).
Review the setting of the
next station position.
The home position return
does not start.
The setting of the homing
method is incorrect.
Check the Statusword bit 13
(Homing error) in the homing
mode (hm).
Check the setting of the
homing method.
Review the setting of the
homing method.

SMC Networks LECSN-T Series Specifications

General

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