Electric gourd electrical control principle
Electric hoist electric control principle: mainly four points move button to complete the move backward and the point move up and down (and completed in a motor and motor connected to the power of the brake release movement up and down);
In addition, the advance and retreat and up and down, both to the button or contactor in, with a normally closed contact of interlock, to prevent back or up and down at the same time operating would produce misoperation caused by phase short circuit. As shown in figure:
In general, domestic products are conical rotor braking. It is turned on by the motor coil itself
