TD860AH Bipolar stepper driver 6A 24—110VDC or 20--80VAC, recommended is 68VDC,or 70VAC Support over voltage,undervoltage,overcurrent,overload protections The max continuous output current is 6A,peak current is 7,2A Support pulse+direction and pulse+pulse command type The microstep(pulse/revolution) can be set by protuner or DIP switches 0—5VDC analog input for speed mode,and support IO speed control function. The max pulse frequency is 500KHZ The voltage of input pulse is 4.5vdc—28vdc, no need connect any resistor It can be used in various kinds of machines,such as laser cutters, laser markers, high precision X-Y tables,labeling machines ,medical equipment,3D printer ,electronic device ,packing ,robot and so on. An ideal solution for applications that require both low noise and high speed performances.