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909
RIPPLE FAULT
Otis · DSD 412 DC Elevator Drive
¿Qué significa 909 ?
Repeated instances of high peak-to-average motor armature current are detected. This condition can be caused by defective hardware, inadequate regulator tuning, or other oscillatory operating conditions.
Causas comunes
- Defective hardware components, which can be diagnosed using the PCU Diagnostics CDU function #998.
- Poor tuning or configuration of the drive's current regulator.
- Other conditions leading to oscillatory operation within the motor or drive system.
Pasos de reparación & Lista de verificación
Haga clic en los pasos para seguir su progreso.
- 1
Execute the PCU Diagnostics CDU function #998 to identify any defective hardware.
- 2
Review and adjust the drive's regulator tuning parameters to stabilize current ripple.
Datos técnicos verificados. Última actualización: March 2026
Fallas relacionadas
Fuente: Otis DSD 412 DC Elevator Drive