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Control and protection methodologies for a motor control module

  • US 7,551,411 B2
  • Filed: 10/06/2006
  • Issued: 06/23/2009
  • Est. Priority Date: 10/12/2005
  • Status: Active Grant
First Claim
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1. A power tool, comprising:

  • a tool motor drivably coupled to a rotary shaft,an electronic clutch interfaced with the tool motor;

    a microcontroller configured to detect a fault condition in the power tool and initiate a protective action via the electronic clutch to remove or reduce power to the tool motor in response to the detected fault condition; and

    a mechanical clutch disposed between the tool motor and the rotary shaft that operates independently from the microcontroller.

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