AUTOMATIC START AND SPEED COMMAND CIRCUIT

Automatic start and speed command circuit for supplying an analog start acceleration and preset signal to an AC electric motor controlled by a variable frequency motor and or brushed/brushless DC motor controller or any electric motor speed control or drive which uses an analog speed command signal input for supplying a variable analog speed command to the controller for setting an operational motor speed. This includes manually speed setting device such as potentiometer. Automatic start and speed command circuit will provide a cycle start after which will increase the command to said electric analog drive to accelerate the motor for an allotted time to allow the controller and motor to achieve the commanded speed at the motor, the speed command is incrementally increased till maximum speed or set speed is achieved. A adjustable time base is included for each increase of command speed to allow for tuning the start up performance of the motor. An isolated power source is included which provides power to the circuit and is isolated from the command signal on the drive or controller as not to interfere with input command on the drive and/or controller.