Mitsubishi Electric Melservo-J5 MR-J5 Series User Manual page 60

[AL. 069.4_Reverse rotation stroke end detection - Command excess error]
Cause
1.
The command position exceeded 30 bits from
the position which was detected after detecting
LSN (Reverse rotation stroke end).
2.
The reverse rotation stroke limit switch is not
connected to LSN (Reverse rotation stroke
end).
3.
The controller is malfunctioning.
4.
There is an abnormality in the surrounding
environment.
[AL. 069.5_Upper stroke limit detection - Command excess error]
Cause
1.
The command position exceeded 30 bits from
the position which was detected after detecting
FLS (Upper stroke limit).
2.
The upper stroke limit switch is not wired. Or
the switch is positioned incorrectly.
3.
There is an abnormality in the surrounding
environment.
4.
The controller is malfunctioning.
[AL. 069.6_Lower stroke limit detection - Command excess error]
Cause
1.
The command position exceeded 30 bits from
the position which was detected after detecting
RLS (Lower stroke limit).
2.
The lower stroke limit switch is not wired. Or
the switch is positioned incorrectly.
3.
There is an abnormality in the surrounding
environment.
4.
The controller is malfunctioning.
1 SERVO AMPLIFIER TROUBLESHOOTING
58
1.3 Handling methods for alarms/warnings
Check/action method
Review the operation pattern so that the command does not exceed 30 bits.
Check if the limit switch is connected correctly.
Replace the controller.
Check the noise, ambient temperature, and others, 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
Review the operation pattern so that the command does not exceed 30 bits.
Check if the limit switch is connected correctly. Or check if the switch is
positioned incorrectly.
Check the noise, ambient temperature, and others, 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)
Replace the controller.
Check/action method
Review the operation pattern so that the command does not exceed 30 bits.
Check if the limit switch is connected correctly. Or check if the switch is
positioned incorrectly.
Check the noise, ambient temperature, and others, 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)
Replace the controller.
Model
[G]
[WG]
Model
[G]
[WG]
Model
[G]
[WG]