Appendix 2 Explanation of Alarms
MITSUBISHI CNC
578
Alarm No.
62
Power supply: Frequency error
The input power supply frequency increased above the specification range.
Investigation details
Investigation results
Remedies
CV
1
Check the state of the operation when the
alarm occurs, and check the repeatability.
The alarm occurs each time immediately
after the power is turned ON. Or, the alarm
occurs occasionally regardless of the
operation state.
Check the investigation item No. 2.
The alarm occurs only while the motor is
accelerating/decelerating.
Check the investigation item No. 3.
2
Measure the power voltage waveform
during normal operation.
The frequency is deviated from 50Hz
±
3%
or 60Hz
±
3%.
Review the power facilities.
The voltage waveform dips at some
sections.
Improve the source of the distortion.
Install an AC reactor.
There is no problem.
Check the investigation item No. 4.
3
Measure the power voltage when the motor
is accelerating/decelerating.
The frequency greatly fluctuates during
acceleration/deceleration.
Review the power facilities.
The voltage waveform during deceleration
dips in some sections.
Improve the source of the distortion.
Install an AC reactor.
There is no problem.
Check the investigation item No. 4.
4
Check if there is any abnormality in the
unit's ambient environment.
(Ex. Noise, grounding, etc.)
Take remedies according to the causes of the abnormality in the ambient environment.
Alarm No.
66
Process error
An error occurred in the process cycle.
Investigation details
Investigation results
Remedies
CV
1
Check the repeatability.
The alarm occurs each time after the power
is turned ON.
Replace the unit.
The alarm occurs occasionally.
Check the investigation item No. 2.
2
Check if there is any abnormality in the
unit's ambient environment.
(Ex. Noise, grounding, etc.)
Take remedies according to the causes of the abnormality in the ambient environment.
Alarm No.
67
Power supply: Phase interruption
An open-phase condition was detected in input power supply circuit.
Investigation details
Investigation results
Remedies
CV
1
Check the voltage for each input phase.
There are phases with no voltage.
Correct the power supply.
There is no problem.
Check the investigation item No. 2.
2
Check the alarm No. "71" items.
Alarm No.
68
Power supply: Watchdog
The system does not operate correctly.
Investigation details
Investigation results
Remedies
CV
1
Check the repeatability.
The alarm occurs each time READY is
turned ON.
Replace the unit.
The alarm occurs occasionally.
Check the investigation item No. 2.
2
Check if there is any abnormality in the
unit's ambient environment.
(Ex. Noise, grounding, etc.)
Take remedies according to the causes of the abnormality in the ambient environment.
Содержание C70
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Страница 18: ...1 1 Outline ...
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Страница 22: ...5 2 GOT Initial Setup ...
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Страница 74: ...57 3 PLC CPU Initial Setup ...
Страница 91: ...3 PLC CPU Initial Setup MITSUBISHI CNC 74 ...
Страница 92: ...75 4 CNC CPU Initial Setup ...
Страница 105: ...4 CNC CPU Initial Setup MITSUBISHI CNC 88 ...
Страница 106: ...89 5 Connecting and Setting up Multiple CNC CPU Modules ...
Страница 115: ...5 Connecting and Setting up Multiple CNC CPU Modules MITSUBISHI CNC 98 ...
Страница 116: ...99 6 Setting Machine Parameters ...
Страница 130: ...113 7 Setting the Position Detection System ...
Страница 153: ...7 Setting the Position Detection System MITSUBISHI CNC 136 ...
Страница 154: ...137 8 Deceleration Check ...
Страница 159: ...8 Deceleration Check MITSUBISHI CNC 142 ...
Страница 160: ...143 9 Setting the Tool Entry Prohibited Range ...
Страница 169: ...9 Setting the Tool Entry Prohibited Range MITSUBISHI CNC 152 ...
Страница 170: ...153 10 Data Backup and Restoration ...
Страница 184: ...167 Appendix 1 Explanation of Parameters ...
Страница 435: ...Appendix 1 Explanation of Parameters MITSUBISHI CNC 418 ...
Страница 436: ...419 Appendix 2 Explanation of Alarms ...
Страница 608: ...591 Appendix 3 Display on 7 segment LED ...
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