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OH7
Motor overtemperature (C0121)
Lenze · 9300 Series
Was bedeutet OH7 ?
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
Check drive dimensioning to prevent continuous motor overload.
- 2
Correct wiring if no PTC/temperature contact is connected for reliable temperature sensing.
- 3
Enter a higher value in C0121 if the temperature threshold is set too low.
- 4
Switch off monitoring by setting C0584 = 3.
Verifizierte technische Daten. Zuletzt aktualisiert: March 2026
Verwandte Fehlercodes
Quelle: Lenze 9300 Series