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System crash startup

System crash during startup: System loading freezes at 40%

Siemens · SINAMICS V70 Drives

What does System crash startup mean?

The system loading process crashes during startup, typically freezing at 40% on the HMI display.

Common Causes

  • CF card is not inserted correctly or has a faulty contact
  • Damaged PPU

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Power off and restart the control system to see if the fault is resolved.

  2. 2

    Power off the control system and check whether the CF card is inserted correctly or has a faulty contact. Reinsert if necessary.

  3. 3

    Power on again to check whether the fault is resolved after checking the CF card.

  4. 4

    If the fault still exists after these operations, professional replacement and maintenance are necessary as the PPU is likely damaged.

Browse all codes in this manual (38)
Verified technical data. Last updated: April 2026

Related Faults

700010Alarm 700010 - Handwheel active700012Alarm 700012 - Spindle is braking700014Alarm 700014 - Spindle gear change timed out
Source: Siemens SINAMICS V70 Drives
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