Vacon 100 hvac Applications Manual

Also see for 100 HVAC: Installation manual Installation manual User manual Technical guide User manual

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Vacon 100 hvac Applications Manual Manual pdf 147 page image

I/ITttTCurrentFault/AlarmLoadability 80%Loadability 100%Loadability 130%105%Trip areaFig. 25: The calculation of the motor temperature9.7.2 MOTOR STALL PROTECTIONThe motor stall protection function gives protection to the motor against short overloads. Anoverload can be caused, for example, by a stalled shaft. It is possible to set the reaction timeof the stall protection shorter than that of the motor thermal protection.The stall status of the motor is specified with parameters P3.9.12 Stall Current and P3.9.14Stall Frequency Limit. If the current is higher than the limit, and the output frequency islower than the limit, the motor is in a stall status.The stall protection is a type of overcurrent protection.NOTE!If you use long motor cables (max. 100 m) with small drives (≤1.5 kW), the motorcurrent that the drive measures can be much higher than the actual motor current.It is because there are capacitive currents in the motor cable.PARAMETER DESCRIPTIONS VACON · 14724-HOUR SUPPORT +358 (0)201 212 575 · EMAIL: VACON@VACON.COM 9