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909
RIPPLE FAULT
Otis · DSD 412 Elevator System
Was bedeutet 909 ?
Repeated high peak to average motor armature current is detected. This condition may be caused by defective hardware, poor regulator tuning, or other oscillatory operation conditions.
Häufige Ursachen
- Defective hardware (can be discovered through PCU Diagnostics CDU function #998).
- Poor regulator tuning.
- Other oscillatory operation conditions.
Reparaturschritte & Checkliste
Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.
- 1
Use the PCU Diagnostics CDU function #998 to check for defective hardware.
- 2
Adjust regulator tuning parameters.
- 3
Investigate and correct other oscillatory operation conditions.
Verifizierte technische Daten. Zuletzt aktualisiert: March 2026
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Quelle: Otis DSD 412 Elevator System