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OH7

Motor overtemperature (C0121)

Lenze · 9300 Series

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The motor temperature, detected via resolver or incremental encoder, has exceeded the threshold set in C0121. This indicates thermal overload from impermissible continuous current, frequent/prolonged acceleration processes, or the C0121 value being set too low.

Häufige Ursachen

  • Motor temperature sensor reading (C0121) indicates overtemperature, requiring immediate shutdown.
  • Motor is operating beyond its rated capacity, causing excessive heat buildup.
  • Faulty motor temperature sensor reporting an incorrect high value.
  • Inadequate motor cooling or ventilation.

Reparaturschritte & Checkliste

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

  1. 1

    Check drive dimensioning to prevent continuous motor overload.

  2. 2

    Correct wiring if no PTC/temperature contact is connected for reliable temperature sensing.

  3. 3

    Enter a higher value in C0121 if the temperature threshold is set too low.

  4. 4

    Switch off monitoring by setting C0584 = 3.

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Verifizierte technische Daten. Zuletzt aktualisiert: March 2026

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