Appendix 2 Explanation of Alarms
MITSUBISHI CNC
590
[6]
The rotation does not stabilize.
[7]
The speed does not rise above the command speed sometimes.
Investigation item
Investigation results
Remedies
1
Check the spindle parameter SP005 (SP008)
settings.
The rotation stabilizes when the settings
values are both set to approx. double.
Change the setting value.
Note that the gear noise may increase.
The symptoms do not change even when the
above value is set.
Return the setting values to the original values.
Check the investigation item No. 2.
2
Manually shake the speed detector connectors
(spindle drive unit side and speed detector side)
to check if they are disconnected.
The connector is disconnected (or loose).
Correctly connect the connector.
The connector is not disconnected (or loose). Check the investigation item No. 3.
3
Turn the power OFF, and check the connection
of the speed detector cable with a tester.
(Especially check the shield wiring.)
The connection is faulty.
Replace the detector cable.
Correct the connection.
The connection is normal.
Check the investigation item No. 4.
4
Investigate the wiring and installation
environment.
1) Is the ground correctly connected?
2) Are there any noise-generating devices near
the drive unit?
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.
No particular problems found.
Replace the spindle drive unit.
Investigation item
Investigation results
Remedies
1
Check the speed command.
Check whether the override input is input from
the machine operation panel.
The speed command is not input correctly.
Input the correct speed command.
The speed command is input correctly.
Check the investigation item No. 2.
2
Check whether the load has suddenly become
heavier.
The load has become heavier.
Repair the machine side.
No particular problems found.
Check the investigation item No. 3.
3
Manually rotate the motor bearings and check
the movement.
The bearings do not rotate smoothly.
Replace the spindle motor.
The bearings rotate smoothly.
Check the investigation item No. 4.
4
Manually shake the speed detector connectors
(spindle drive unit side and speed detector side)
to check if they are disconnected.
The connector is disconnected (or loose).
Correctly connect the connector.
The connector is not disconnected (or loose). Check the investigation item No. 5.
5
Turn the power OFF, and check the connection
of the speed detector cable with a tester.
(Especially check the shield wiring.)
The connection is faulty.
Replace the detector cable.
Correct the connection.
The waveform is normal.
Replace the spindle drive unit.
Содержание C70
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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 ...
Страница 608: ...591 Appendix 3 Display on 7 segment LED ...
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