C70 Setup Manual
Appendix 2.16 Troubleshooting
579
Alarm No.
69
Power supply: Grounding
The motor power cable is in contact with FG (Frame Ground).
Investigation details
Investigation results
Remedies
SV
SP
1
Measure the insulation across the power
cables (U,V,W) for all motors and the
ground. (Carry out a megger test.)
Less than 100k . (Grounding)
The motor or power cable may be ground
faulted.
100k or more. (Normal)
Check the investigation item No. 2.
2
Has oil come in contact with the motor or
power cable?
Oil has come in contact.
Take measures so that oil does not come in
contact. Check the motor's cannon
connector and the inside of the terminal box,
and clean as necessary.
Oil has not come in contact.
Check the investigation item No. 3.
3
Measure the insulation again.
Less than 1M . (Grounding)
Replace the motor or cable.
1M or more. (Normal)
Check the investigation item No. 2.
4
Measure the resistance across the U, V, W
phase terminals of the servo/spindle drive
unit and the ground.
(Do not measure the insulation as the unit
could be damaged.)
Less than 100k .
Replace the drive unit.
100k or more.
Replace the power supply unit.
5
Check whether there is any axis in which
alarm has occurred.
There is an axis in which alarm has
occurred.
Check the alarm No. "24" items.
There is no axis in which alarm has
occurred.
Check the investigation item No. 2.
Alarm No.
6A
Power supply: External contactor welding
A contact of the external contactor is welding.
Investigation details
Investigation results
Remedies
CV
1
Check whether any alarm has occurred on
the drive unit side.
An alarm has occurred.
Remove the cause of the alarm on the drive
side, and check the investigation item No. 2.
An alarm has not occurred.
Check the investigation item No. 2.
2
Check whether the contactor's contact has
melted.
The contactor has melted.
Replace the contactor.
The contactor has not melted.
Check the investigation item No. 3.
3
Check that the contactor excitation wiring is
correctly connected from the power supply
unit's MC1 terminal.
The connection is correct.
Correctly connect.
The connection is incorrect.
Replace the power supply unit.
Alarm No.
6B
Power supply: Rush circuit error
A thyristor for rush short circuit is ON when rushing.
Investigation details
Investigation results
Remedies
CV
1
Check whether any alarm has occurred on
the drive unit side.
An alarm has occurred.
Remove the cause of the alarm on the drive
side, and then carry out the investigation
details 2.
An alarm has not occurred.
Check the investigation item No. 2.
2
Check the repeatability.
The alarm occurs each time READY is
turned ON.
Replace the unit.
The alarm occurs occasionally.
Check the investigation item No. 3.
3
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 ...
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Страница 92: ...75 4 CNC CPU Initial Setup ...
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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 ...
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 ...
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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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