Circuit Operation

A Permanent Magnet (PM) motor operates each of the power windows. Each motor raises or lowers the glass if voltage is supplied to the motor. The polarity of the supply voltage determines in which direction the motor turns. The window switches control the supply voltage polarity.

A built in circuit breaker protests each motor. The circuit breaker opens the circuit if a window switch is held too long and the window is obstructed or fully up or down. The circuit breaker resets only after the voltage is removed from the motor.