SMC Networks LECSB2-T Series User Manual

8. TROUBLESHOOTING
8 - 30
Alarm No.: 2B
Name: Encoder counter error
Alarm content
Data which encoder created is failure.
Detail
No.
Detail name
Cause
Check method
Check result
Action
2B.1
Encoder
counter error 1
(1)
An encoder cable is
malfunctioning.
Check if the encoder
cable is disconnected
or shorted.
It has a failure.
Repair or replace the
cable.
It has no failure.
Check (2).
(2)
The external conductor
of the encoder cable is
not connected to the
ground plate of the
connector.
Check if it is
connected.
It is not connected.
Connect it correctly.
It is connected.
Check (3).
(3)
Something near the
device caused it.
Check the noise,
ambient
temperature, vibration,
etc.
There is a problem in
the surrounding.
Take
countermeasures
against its cause.
There is no problem
in
the surrounding.
Check (4).
(4)
An encoder is
malfunctioning.
Replace the direct drive
motor, and then check
the repeatability.
It is not repeatable.
Replace
Replace the direct
drive motor.
2B.2
Encoder
counter error 2
Check it with the check method for [AL. 2B.1].
Alarm No.: 30
Name: Regenerative error
Alarm content
Permissible regenerative power of the built-in regenerative resistor or regenerative option is
exceeded.
・
A regenerative transistor in the driver is malfunctioning.
Detail
No.
Detail name
Cause
Check method
Check result
Action
30.1
Regeneration
heat error
(1)
The setting of the
regenerative resistor
(regenerative option) is
incorrect.
Check the regenerative
resistor (regenerative
option) and [Pr. PA02]
setting.
The setting value is
incorrect.
Set it correctly.
It is set correctly.
Check (2).
(2)
The regenerative
resistor (regenerative
option) is not connected.
Check if the
regenerative
resistor (regenerative
option) is connected
correctly.
It is not connected
correctly.
Connect it correctly
It is connected
correctly.
Check (3).
(3)
The combination of
regenerative resistor
(regenerative option) and
driver is incorrect.
Check if the
regenerative resistor
(regenerative option)
and the driver are
connected in the
specified combination.
The combination is
incorrect.
Use them in the
correct combination.
The combination is
correct.
Check (4).
(4)
The power supply
voltage is high.
Check if the voltage of
the input power supply
is over the prescribed
value.
264 V AC
It is higher than the
prescribed value.
Reduce the power
supply voltage.
It is at the prescribed
value or lower.
Check (5).

SMC Networks LECSB2-T Series Specifications

General

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