A7001 Ice detected on rotor blades

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A7001 is an ice detection alarm for ice detected on rotor blades.¹² It stops the turbine automatically when active.¹² When ice is detected under A7001, there is no access within 300 m of a turbine.³

Facts

• For ice, there is no access within 300 m of a turbine with ice detected under alarm A7001.³
• On 2026-04-01, icing alarms A7001 led to S600 Stopped - icing status starts for WTG-12, WTG-09, WTG-03, and WTG-02, with later clears and S600 ends recorded for each turbine in this part.^4567891011
• Ice detection alarm A7001 stops the turbine automatically.¹
• When A7001 ice detection is active, the turbine stops by itself.²

Timeline

• 2026-04-01: On 2026-04-01, icing alarms A7001 led to S600 Stopped - icing status starts for WTG-12, WTG-09, WTG-03, and WTG-02, with later clears and S600 ends recorded for each turbine in this part.^4567891011

Documents

• SOP-WAH-003 Revision B - Working at height and rescue
• SCADA alarm and status log, 2026-04-01 to 2026-08-31
• Quellmoor Ridge Wind Farm Onboarding and Site Rules (February 2025)
• Toolbox Talk: Cold-Weather Start-Up After PWG 220 Conversion

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, Safety, isolation and work at height, Training, site rules and acronyms

Sources

Footnotes

1. Quellmoor Ridge Wind Farm Onboarding and Site Rules (February 2025) — slide 7 · ✓ quote verified ↩ ↩² ↩³

2. Toolbox Talk: Cold-Weather Start-Up After PWG 220 Conversion — 01:52–02:01 · ✓ quote verified ↩ ↩² ↩³

3. SOP-WAH-003 Revision B - Working at height and rescue — table 2, row 6 · table ↩ ↩²

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

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

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

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

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

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

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

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

Provenance badges✓ quote verified the quoted words were found verbatim in the source texttable values parsed deterministically from the cited table rows