Feature:1. Microcontroller: Our stepper motor driver has built in microcontroller function and smoothing filter function, the external input can operate normally without acceleration or deceleration.2. Chip and Setting: The stepper motor driver internally supports pointing mode with a 32 bit motor control dedicated smart chip, subdivision setting from 200 to 51200 and current setting from 0 to 6.5A.3. Algorithm and Isolated Differential Signal: The stepper motor driver adopts vector current, speed and position closed loop control algorithm with optical coupler isolated differential signal input, and the pulse response frequency can up to 200KHZ.4. Display and Key: The stepper motor driver adopts 4 digit LED digital tube display with 4 keys for intuitive and convenient operation.5. Multiple Protection: The stepper motor driver has protection functions such as over current, over voltage, over speed, over heat and tracking error.Specification:Item Type: Stepper Motor DriverMaterial: Aluminum AlloyContinuous Output Current:Minimum Value: 1AMaximum Value: 4.2AInput Supply Voltage:Minimum: 18VACTypical: 24VACMaximum: 80VDC Logic Input Current:Minimum: 7mATypical: 10mAMaximum: 20mAOverall Power Maximum: 120WPulse Frequency:Minimum Value: 0Maximum Value: 200kHzInsulation Resistance Minimum: 500MDigital Output Port Logic Current Maximum: 100mADigital Output Port Voltage Withstand Maximum: 24VCooling Method: Natural Cooling Or External Heat SinkUse Environment:Use Situation: Avoid Dust, Oil Mist And Corrosive Gas As Much As PossibleTemperature: 0-50Humidity: 40-90%RHVibration: 10-55Hz/0.15mmStorage Temperature: -20-+65Weight: Approx. 300g / 11oz.Package List:1 x Stepper Motor DriverNote:AC input voltage in AC18V 80V, DC input DC24V 110V can work normally, power supply power is not higher than 200W, the higher the voltage input, the greater the current setting motor torsion, high speed performance, but the motor heat more, in principle, as long as to meet the use, the smaller the current setting the better.