SMC Networks LECSN-T Series User Manual

8. TROUBLESHOOTING
8 - 58
the repeatability.
position setting.
96.3
Servo off
warning at home
positioning
(1)
A home positioning was
executed during
servooff.
Check if the status is
servo-off at home
positioning.
It is servo-off.
Turn to servo-on, and
then execute the home
positioning.
96.4
Home
positioning
warning during
magnetic pole
detection
(1)
Z-phase was not turned
on after servo-on.
Check if the Z-phase
was turned on.
The Z-phase was not
turned on.
Rotate the direct drive
motor to turn on the Zphase,
and make home
position setting.
Alarm No.: 98
Name: Software limit warning
Alarm content
A software limit set with the parameter was reached for the positioning function.
Detail
No.
Detail name
Cause
Check method
Check result
Action
98.1
Forward
rotation-side
software stroke
limit reached
(1)
A software limit was set
within the actual
operation range.
Check if the parameter
settings ([Pr. PT15] to
[Pr. PT18]) to the
operation range are
correct.
The setting was out
of operation range.
Set [Pr. PT15] to [Pr.PT18]
correctly.
The setting was
within operation
range.
Check (2).
(2)
A point table of the
position data which
exceeds the software
limit was executed.
Check if the target
position of the point
data to the operation
range was correct.
The setting was out
of operation range.
Set the point table
correctly.
The setting was
within operation
range.
Check (3).
(3)
A software limit was
reached by using the
JOG operation or
manual pulse generator
operation.
Check if the JOG
operation or manual
pulse generator
operation was
executed properly to
the operation range.
It reached to the out
of operation range.
Operate within the
software limit.
Adjust properly the
parameters such as JOG
speed and multiplication
of the manual pulse as
necessary.
98.2
Reverse
rotation-side
software stroke
limit reached
Check it with the check method for [AL. 98.1].
Alarm No.: 99
Name: Stroke limit warning
Alarm content
The stroke limit signal is off.
Detail
No.
Detail name
Cause
Check method
Check result
Action
99.1
Forward
rotation stroke
end off
(1)
The forward rotation
stroke limit switch is
connected to LSP.
Check if the limit switch
is connected
correctly.
It is not connected.
Connect it correctly.
It is connected.
Check (2).
It turned off.
Check operation attern.
(2)
The forward rotation
stroke end was
exceeded during driving.
Check if the forward
rotation stroke limit
switch turned off.
It is not connected.
Set the point table
correctly.
It is connected.
Check (3).
99.2
Reverse
rotation stroke
end off
(1)
The reverse rotation
stroke limit switch is
connected to LSN.
Check if the limit switch
is connected
correctly.
It is not connected.
Connect it correctly.
It is connected.
Check (2).
(2)
The reverse rotation
stroke end was
exceeded during driving.
Check if the reverse
rotation stroke limit
switch turned off.
It turned off.
Check operation pattern.
Alarm No.: 9B
Name: Error excessive warning
Alarm content
・
Droop pulses have exceeded the warning occurrence level.
Detail
No.
Detail name
Cause
Check method
Check result
Action
9B.1
Excess droop
pulse 1 warning
(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
disconnected.
Check (2).

SMC Networks LECSN-T Series Specifications

General

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