... shutdown− Automatic current reduction / power savingDescriptionUIM24302 stepper motor controller is a microprocessor embedded, voltage control, miniature steppermotor controller.With the ... 1) the on-board trimmer, 2) an external potentiometer or, 3) an external voltage. Run/stop, direction,high/ ... 0.3 seconds, even when the speed control voltage is changing. This feature makes thesudden increase of the ...