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NCU 7x0.3 PN
SINUMERIK
SINUMERIK 840D sl
NCU 7x0.3 PN
Manual
Valid for
SINUMERIK 840D sl / 840DE sl control
Software
CNC software
09/2011
6FC5397-1EP40-0BA0
Version
4.4
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Preface
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Safety notes
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System overview
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Description
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Application planning
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Dimension drawings
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Assembling
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Connecting
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Technical data
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Connectable components
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Spare Parts/Accessories
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Appendix
1
2
3
4
5
6
7
8
9
10
A
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Questions and answers
NCU 730 เสียเปลี่ยน NCU 730 ใหม่แล้ว แต่ยังใช้งานไม่ได้ boot ไม่ขึ้น
The Siemens NCU 7x0.3 PN Series may not be booting after replacement due to several possible reasons:
1. Power Supply Issue: Ensure the 24V power supply is properly connected and functioning.
2. RESET Operation: The NCU may require a reset. Use the RESET button located behind the blanking cover to force a new power-up.
3. Startup Switch Settings: Verify that the mode selector switches (SVC/NCK and PLC) are set to "0" for normal operation.
4. Ventilation Space: Ensure there is an 80mm ventilation space above and below the components for proper cooling.
5. Component Compatibility: Confirm that the replacement unit is compatible with the system and that all cables and connectors are securely attached.
6. Faulty Replacement Unit: If all connections are correct and the unit still does not boot, the replacement NCU may be defective.
If the issue persists, further troubleshooting or professional support may be required.
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