Control unit for an electric motor, in particular for a fan motor
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United States of America Patent
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Feb 21, 2012
Grant Date -
Apr 9, 2009
app pub date -
May 3, 2007
filing date -
May 4, 2006
priority date (Note) -
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Abstract
The invention provides a control unit for at least one electric motor, wherein the control unit performs open-loop or closed-loop control of the motor speed of the electric motor in such a way that in the case of control values in specific ranges which are typical of a fault when the setpoint value is being predefined, such a fault being, for example, a line break, a voltage failure or a short circuit, the control unit drives the motor with a predefined setpoint value which differs from the current control value.
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