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909
RIPPLE FAULT
Otis · DSD 412 DC Elevator Drive
Hva betyr 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.
Vanlige årsaker
- 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.
Reparasjonssteg & Sjekkliste
Klikk på steg for å spore fremgangen.
- 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.
Verifisert teknisk data. Sist oppdatert: March 2026
Relaterte feilkoder
Kilde: Otis DSD 412 DC Elevator Drive