A4105 Pitch system fault

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A4105 Pitch system fault is an alarm code in the reviewed registry.^{12345678910111213141516} In SCADA alarm and status logs, it was recorded on WTG-12, WTG-05, WTG-06, and WTG-10 with S510 Stopped - fault events.^{12345678910111213141516} The logged values were 1 axis, 2 axis, and 3 axis.^{12345678910111213141516}

Facts

• On 2026-04-14 and 2026-04-16, WTG-12 logged A4105 Pitch system fault events with S510 Stopped - fault starts and ends; the first event had value 1 axis and the second had value 2 axis.¹²³⁴
• WTG-05 raised A4105 Pitch system fault with value 1 axis on 2026-08-03, started S510 Stopped - fault, then cleared A4105 and ended S510 about two hours later.⁵⁶⁷⁸
• WTG-06 raised A4105 Pitch system fault with value 3 axis on 2026-08-05, started S510 Stopped - fault, then cleared A4105 and ended S510 shortly after midnight on 2026-08-06.^9101112
• WTG-10 raised A4105 Pitch system fault with value 2 axis on 2026-08-23 01:43:03, entered S510 Stopped - fault, cleared A4105 at 04:03:03, and ended S510 at 04:03:33.^13141516

Timeline

• 2026-04-14: On 2026-04-14 and 2026-04-16, WTG-12 logged A4105 Pitch system fault events with S510 Stopped - fault starts and ends; the first event had value 1 axis and the second had value 2 axis.¹²³⁴
• 2026-08-03: WTG-05 raised A4105 Pitch system fault with value 1 axis on 2026-08-03, started S510 Stopped - fault, then cleared A4105 and ended S510 about two hours later.⁵⁶⁷⁸
• 2026-08-05: WTG-06 raised A4105 Pitch system fault with value 3 axis on 2026-08-05, started S510 Stopped - fault, then cleared A4105 and ended S510 shortly after midnight on 2026-08-06.^9101112
• 2026-08-23: WTG-10 raised A4105 Pitch system fault with value 2 axis on 2026-08-23 01:43:03, entered S510 Stopped - fault, cleared A4105 at 04:03:03, and ended S510 at 04:03:33.^13141516

Documents

• SCADA alarm and status log, 2026-04-01 to 2026-08-31

Related

• Topics: Cold-climate operation and icing, Environmental permit and night curtailment, Gearbox lubrication and oil changes, Gearbox temperature, vibration and oil analysis, Generator brushes and electrical systems, Grid connection and grid operator instructions

Sources

Footnotes

1. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 140 · table ↩ ↩² ↩³ ↩⁴ ↩⁵

2. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 143 · table ↩ ↩² ↩³ ↩⁴ ↩⁵

3. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 154 · table ↩ ↩² ↩³ ↩⁴ ↩⁵

4. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 157 · table ↩ ↩² ↩³ ↩⁴ ↩⁵

5. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1524 · table ↩ ↩² ↩³ ↩⁴ ↩⁵

6. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1525 · table ↩ ↩² ↩³ ↩⁴ ↩⁵

7. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1526 · table ↩ ↩² ↩³ ↩⁴ ↩⁵

8. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1527 · table ↩ ↩² ↩³ ↩⁴ ↩⁵

9. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1534 · table ↩ ↩² ↩³ ↩⁴ ↩⁵

10. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1535 · table ↩ ↩² ↩³ ↩⁴ ↩⁵

11. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1536 · table ↩ ↩² ↩³ ↩⁴ ↩⁵

12. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1537 · table ↩ ↩² ↩³ ↩⁴ ↩⁵

13. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1779 · table ↩ ↩² ↩³ ↩⁴ ↩⁵

14. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1780 · table ↩ ↩² ↩³ ↩⁴ ↩⁵

15. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1783 · table ↩ ↩² ↩³ ↩⁴ ↩⁵

16. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1784 · table ↩ ↩² ↩³ ↩⁴ ↩⁵

Provenance badgestable values parsed deterministically from the cited table rows