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908

OVER TEMPERATURE FAULT

Otis · DSD 412 DC Elevator Drive

Hva betyr 908 ?

The calculated SCR junction temperature, derived from thermistor heat sink measurements and the heating effects of the measured armature output current, has exceeded 125 degrees Centigrade. This fault will not shut down the drive.

Vanlige årsaker

  • Ambient temperature surrounding the drive cabinet is excessively high.
  • The air filter within the cabinet is clogged, restricting airflow.
  • The heatsink fins are clogged with dust or debris, impairing heat dissipation.
  • Failure of one or more cooling fan(s) in the power cube.

Reparasjonssteg & Sjekkliste

Klikk på steg for å spore fremgangen.

  1. 1

    Verify the ambient temperature in the vicinity of the drive cabinet.

  2. 2

    Clean or replace any clogged air filter(s) in the cabinet.

  3. 3

    Clean the heatsink fins to improve heat transfer.

  4. 4

    Replace any defective cooling fan(s) located in the power cube.

Se alle koder i denne manualen (48)
Verifisert teknisk data. Sist oppdatert: March 2026

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Kilde: Otis DSD 412 DC Elevator Drive