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When should ATV61/71 internal fan start?

ATV61 and ATV71 drives,
On Size 2 to 5b the fan starts on a temperature threshold THD=70% and is stopped when THD < 60%

On Size 6 to 15 and 690V range the fan starts as soon as the run command is applied.

Size 2 to size 5b are drives from 075N4 till HD18N4 (included).
Size 6 to 15 are drives HD18N4 and above.

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