[Al. 024_Main Circuit Error] - Mitsubishi Electric MR-J5-G Series User Manual

[AL. 024_Main circuit error]

• The servo motor power cable has a ground fault.
• The servo motor has a ground fault.
[AL. 024.1_Ground fault detected via hardware detection circuit]
Cause
1.
The servo motor power cable has a ground
fault or has shorted.
2.
The servo motor has a ground fault.
3.
The main circuit power supply cable and servo
motor power cable have shorted.
4.
The servo amplifier has malfunctioned.
5.
The wiring of the regenerative resistor
(regenerative option) is incorrect.
6.
The regenerative resistor (regenerative option)
and the servo amplifier are connected in a
wrong combination.
7.
There is a problem with the surrounding
environment.
[AL. 024.2_Ground fault detected via software detection processing]
Cause
1.
The servo motor power cable has a ground
fault or has shorted.
2.
The servo motor has a ground fault.
3.
The main circuit power supply cable and servo
motor power cable have shorted.
4.
The servo amplifier has malfunctioned.
5.
There is a problem with the surrounding
environment.
Check/action method
Check if the servo motor power cable has a ground fault. If the servo motor
power cable has a ground fault, correct the wiring.
Check if the servo motor power cable has shorted. If the servo motor power
cable has shorted, replace the servo motor power cable.
After disconnecting the servo motor power cables on the servo motor side,
check the insulation between phases (U/V/W/
ground fault or has shorted, replace the servo motor.
After shutting off the power, make sure that the main circuit power cable and
the motor power cable are not in contact with each other. If the cables are
contacting, correct the wiring.
Check that this alarm occurs as the servo motor power cables (U/V/W) are
disconnected. If the alarm occurs, replace the servo amplifier.
Check if the regenerative resistor (regenerative option) is wired correctly. If the
regenerative resistor (regenerative option) is wired incorrectly, correct the
wiring.
Check if the combination of the regenerative resistor (regenerative option) and
the servo amplifier is correct as specified.
Refer to "Regenerative option" in the following manual.
MR-J5 User's Manual (Hardware)
Check the noise, ambient temperature, and other conditions, and implement
appropriate countermeasures for the cause. If there is noise, take
countermeasures to reduce the noise.
Refer to "Noise reduction techniques" in the following manual.
MR-J5 User's Manual (Hardware)
Check/action method
Check if the servo motor power cable has a ground fault. If the servo motor
power cable has a ground fault, correct the wiring.
Check if the servo motor power cable has shorted. If the servo motor power
cable has shorted, replace the servo motor power cable.
After disconnecting the servo motor power cables on the servo motor side,
check the insulation between phases (U/V/W/
ground fault or has shorted, replace the servo motor.
After shutting off the power, make sure that the main circuit power cable and
the motor power cable are not in contact with each other. If the cables are
contacting, correct the wiring.
Check that this alarm occurs as the servo motor power cables (U/V/W) are
disconnected. If the alarm occurs, replace the servo amplifier.
Check the noise, ambient temperature, and other conditions, and implement
appropriate countermeasures for the cause. If there is noise, take
countermeasures to reduce the noise.
Refer to "Noise reduction techniques" in the following manual.
MR-J5 User's Manual (Hardware)
1 SERVO AMPLIFIER TROUBLESHOOTING
1.3 Handling methods for alarms/warnings
Model
[A]
[G]
[WG]
). If the servo motor has a
Model
[A]
[G]
[WG]
). If the servo motor has a
1
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