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SMC Networks LECSB2-T Series User Manual

SMC Networks LECSB2-T Series
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8. TROUBLESHOOTING
8 - 28
Alarm No.: 24
Name: Main circuit error
Alarm content
A ground fault occurred on the servo motor power lines.
A ground fault occurred at the servo motor.
Detail
No.
Detail name
Cause
Check method
Check result
Action
24.1
Ground fault
detected by
hardware
detection
circuit
(1)
The driver is
malfunctioning.
Disconnect the servo
motor power cables
(U/V/ W) and check if
the alarm occurs.
It occurs.
Replace the driver.
It does not occur.
Check (2).
(2)
A ground fault or short
occurred at the servo
motor power cable.
Check if only the servo
motor power cable is
shorted.
It is shorted.
Replace the servo motor
power cable.
It is not shorted.
Check (3).
(3)
A ground fault occurred
at the servo motor.
Disconnect the servo
motor power cables on
motor side, and check
insulation of the motor
(between U/V/W/ ).
It is shorted.
Replace the servo motor.
It is not shorted.
Check (4).
(4)
The main circuit power
supply cable and servo
motor power cable
were shorted.
Shut off the power, and
check if the main circuit
power supply cable and
servo motor power cable
are in contact.
They are in contact.
Correct the wiring.
They are not in
contact.
Check (5).
(5)
Something near the
device caused it.
Check the noise,
ambient
temperature, etc.
There is a problem in
the surrounding.
Take countermeasures
against its cause.
24.2
Ground fault
detected by
software
detection
function
(1)
The driver is
malfunctioning.
Disconnect the servo
motor power cable
(U/V/W), and check if
the alarm occurs.
It occurs.
Replace the driver.
It does not occur.
Check (3).
(2)
A ground fault or short
occurred at the servo
motor power cable.
Check if only the servo
motor power cable is
shorted.
It is shorted.
Replace the servo motor
power cable.
It is not shorted.
Check (4).
(3)
A ground fault occurred
at the servo motor.
Disconnect the servo
motor power cables on
motor side, and check
insulation between
phases (U/V/W/ ).
It is shorted.
Replace the servo motor.
It is not shorted.
Check (5).
(4)
The main circuit power
supply cable and servo
motor power cable
were
shorted.
Shut off the power, and
check if the main circuit
power supply cable and
servo motor power
cable are in contact.
They are in contact.
Correct the wiring.
They are not in
contact.
Check (6).
(5)
Something near the
device caused it.
Check the noise,
ambient temperature,
etc.
There is a problem in
the surrounding.

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SMC Networks LECSB2-T Series Specifications

General IconGeneral
BrandSMC Networks
ModelLECSB2-T Series
CategoryDC Drives
LanguageEnglish