SMC Networks LECSB2-T Series User Manual

8. TROUBLESHOOTING
8 - 62
(9)
The position loop gain
is small.
Increase the position
loop gain, and then
check the
repeatability.
It is not repeatable.
Increase the position
loop gain ([Pr. PB08]).
It is repeatable.
Check (10).
(10
)
Servo motor shaft was
rotated by external
force.
Measure the actual
position under the
servolock status.
It is rotated by
external force.
Review the machine.
It is not rotated by
external force.
Check (11).
(11)
An encoder is
malfunctioning.
Replace the servo
motor,
and then check the
repeatability.
It is not repeatable.
Replace the servo motor.
9B.3
Excess droop
pulse 2 warning
Check it with the check method for [AL. 9B.1].
9B.4
Error excessive
warning during
0 torque limit
(1)
The torque limit has
been 0.
Check the torque limit
value.
The torque limit has
been 0.
Do not input a command
while the torque limit
value is 0.
Alarm No.: 9C
Name: Converter warning
Alarm content
A warning occurred in the converter unit during the servo-on.
Detail
No.
Detail name
Check method
Check method
Check result
Action
9C.1
Converter unit
warning
(1)
A warning occurred in
the converter unit
during the servo-on.
Check the warning of the converter unit, and take the action following the
remedies for warnings of the converter unit.
Alarm No.: 9F
Name: Battery warning
Alarm content
・
Battery voltage for absolute position detection system decreased.
Detail
No.
Detail name
Cause
Check method
Check result
Action
9F.1
Low battery
(1)
The battery is not
connected to CN4.
Check if the battery is
connected correctly.
It is not connected.
Connect it correctly.
It is connected.
Check (2).
(2)
The battery voltage is
low. The battery is
consumed.
Check the battery
voltage with a tester.
It is less than 4.9 V
DC.
Replace the battery.
9F.2
Battery
degradation
warning
(1)
The absolute position
storage unit has not
connected.
Check if the absolute
position storage unit is
connected correctly.
It is not connected.
Connect it correctly.
Alarm No.: E0
Name: Excessive regeneration warning
Alarm content
・There is a possibility that regenerative power may exceed permissible regenerative power of built-in
regenerative resistor or regenerative option.
Detail
No.
Detail name
Cause
Check method
Check result
Action
E0.1
Excessive
Regeneration
warning
(1)
The regenerative power
exceeded 85% of the
permissible regenerative
power of the built-in
regenerative resistor or
regenerative option.
Check the effective
load ratio.
It is 85% or more.
Reduce the frequency of
positioning.
Increase the deceleration
time constant.
Reduce the load.
Use a regenerative option if it
is not being used.

SMC Networks LECSB2-T Series Specifications

General

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