Feature: 1. Excellent Performance: This driver features PI control algorithm, low noise, low vibration, low heat. Single ended, pulse with direction and double pulse signal input. 2. Convenient Current Setting: 16 gears are optional, and the maximum output current of this driver can arrive 7A. The current will be halved after 1s of standstill. 3. Multi Protection: This driver has the functions of overvoltage and undervoltage alarm, phase current overcurrent protection, motor phase open circuit detection, etc. 4. Spontaneous Pulse: The built in oscillator, dial code or switching value signal to control the start and stop of motor, and the 16 speed can be switched automatically. 5. Easy Operation: Pulse, direction and enable terminals have constant current input function, and can be directly connected to the input signal without adding a series resistance to reduce voltage and limit current protection. Specification: Item Type: Stepper Motor Driver Material: ABS Output Current (A): Minimum: 2.8 Maximum: 7 Control Signal Current (mA): Minimum: 6 Typical Value: 10 Maximum: 16 Step Pulse Frequency (KHz): Minimum: 0 Maximum: 300 Step Pulse Width (us): Minimum: 2 Direction Signal Width (us): Minimum Value: 100 Undervoltage Protection Point (VDC): Typical value: 7.5 Overvoltage Protection Point (VDC): Typical value: 100 Drive Initialization Time: Minimum: 2 Insulation Resistance(ΜΩ)： Minimum Value: 500. Package List: 1 x Stepper Motor Driver Note: 1. Do not connect the power supply reversely, and the input voltage should not exceed DC90V.2. The green indicator PWR lights up when the drive is powered on.