Features Internal Design: Internal support jog mode, while the built in smooth filtering function ensures stable operation without external acceleration and deceleration. Simpler Control: Adopting 32 bit ARM intelligent chip, and the smart motor control can replace PLC in most occasion, which greatly improve the working efficiency. Digital Display: 4 digit LED tube display with 4 key, and the clear display enables easy adjustment over the current within the range of 0-4.2A, very convenient. The Closed Loop: Using vector current, speed and position closed loop control algorithm and optocoupler isolation differential signal input, and the pulse response frequency can get up to 200KHz. Flexible in Use: Has functions such as overcurrent protection, overvoltage protection, overspeed protection, overheating protection, etc., and flexible subdivision setting of 200‑51200 to meet all needs. Specification: Item Type: Stepper Motor Driver Parameter: DM542L Minimum Continuous Output Current: 1A Maximum Continuous Output Current: 4.2A Minimum Input Power Supply Voltage: 18V DC Typical Input Power Supply Voltage: 24V DC Maximum Input Power Supply Voltage: 48V DC Minimum Logic Input Current: 7mA Typical Logic Input Current: 10mA Maximum Logic Input Current: 20mA Maximum Power of The Whole Machine: 100W Pulse Frequency: 0-200kHz Minimum Insulation Resistance: 500MΩ Maximum Logic Current of Digital Output Port: 100mA Maximum Withstand Voltage of Digital Output Port: 24V Cooling Mode: Natural cooling or external radiator.  Usage: Avoid dust, oil mist and corrosive gas.  Temperature: 0℃ - 50℃ Ambient Humidity: 40-90% RH Operating Environment Vibration: 10~55Hz/0.15mm Storage Temperature: -20℃- +65 ℃ Package List: 1 x Stepper Motor Driver Note: The AC input voltage is between AC 18V and 80V, and the DC input voltage is between DC24V and 110V. The power supply power is not higher than 200W. The higher the voltage input, the greater the current setting, the greater the motor torsion, the better the high speed performance, but the greater the motor heating. In principle, as long as the use is met, the smaller the current setting, the better. Package List 1 x Stepper Motor Driver