Appendix 2 Explanation of Alarms
MITSUBISHI CNC
572
Alarm No.
4A
Motor side detector: Error 7
The motor side detector (linear scale in the case of linear motor) detected an error.
As details differ for each detector, refer to "Appendix 2.3.1" for the description of this alarm.
Investigation details
Investigation results
Remedies
SV
SP
1
Check the alarm No. "1B" items.
Alarm No.
4B
Motor side detector: Error 8
The motor side detector (linear scale in the case of linear motor) detected an error.
As details differ for each detector, refer to "Appendix 2.3.1" for the description of this alarm.
Investigation details
Investigation results
Remedies
SV
SP
1
Check the alarm No. "1B" items.
Alarm No.
4C
Current error at magnetic pole estimate
Current detection failed at the pulse-applied magnetic pole estimation by IPM spindle motor.
Investigation details
Investigation results
Remedies
SV
SP
1
Check the pulse-applied time.
The pulse-applied time can be short.
Set the pulse-applied time longer.
Setting parameter:SP142
1) The pulse-applied time (0 to 350)
2) For low-speed coil:1)+1000
3) The polarity of magnetic pole estimate:
Reverse polarity is "-"
After the adjustment, perform the magnetic
pole detection control again.
-
The alarm also occurs after the pulse-
applied time is set.
Replace the unit.
Alarm No.
4E
NC command mode error
The mode outside the specification was input in spindle control mode selection.
Investigation details
Investigation results
Remedies
SV
SP
1
Check the wiring and setting environment.
1) Correctly grounded?
2) Any noise generating devices around the
unit?
3) Are the speed/position detector cables
correctly shielded?
1) The grounding is incomplete.
Correctly ground.
2) The alarm occurs easily when a specific
device operates.
Use noise measures on the device
described on the left.
3) The cable is not correctly shielded.
Correctly shield the cable.
No abnormality is found in particular.
Replace the drive unit.
Alarm No.
4F
Instantaneous power interrupt
The control power supply has been shut down for 50ms or more.
Investigation details
Investigation results
Remedies
SV
SP
1
Check the repeatability.
The alarm occurs occasionally.
Check the power facilities.
-
Check the wiring of the control power.
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Страница 106: ...89 5 Connecting and Setting up Multiple CNC CPU Modules ...
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Страница 116: ...99 6 Setting Machine Parameters ...
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Страница 154: ...137 8 Deceleration Check ...
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Страница 160: ...143 9 Setting the Tool Entry Prohibited Range ...
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Страница 170: ...153 10 Data Backup and Restoration ...
Страница 184: ...167 Appendix 1 Explanation of Parameters ...
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Страница 436: ...419 Appendix 2 Explanation of Alarms ...
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