... .8º),1/2,1/4,1/8,1/16,1/32,1/64,1/128,1/256 1/5,1/10 ... is protected : When the double-phase electrical machinery is connected with driver , users are apt to connect the phase by mistake, thus ... whether the wiring of electrical machinery is a mistake . CW6060AC high quality stepper motor driver,2A-6A,Power input type:24V~55V AC