... cooperates with frequency motor realize soft start,soft stop,stable speed and little impact.2,Two or three motors drive ... the machine,Because of the wide speed range of center gear,speed ratio can be regulated immediately while working.For ... Source Power380V 50HZ 3380V 50HZ 36: Control Voltage110V or 220V110V7: Variable Speed Control0-60RPM Does not have the section adjustment0-60RPM Does ...