🔍 PWM SIGNAL:This controller has the function of generating a PWM signal, and there is a jumper on the board to set the pulse frequency signal at the default selection. 🔍 DRIVER REQUIRED:The PWM signal generator provides a stepper motor signal. The speed of the motor can be controlled by adjusting the frequency of the potentiometer. To control the stepper motor, there must also be a driver using it. 🔍 3 FREQUENCY SIGNALS:The PWM generator has a total of three frequency signals, which can be selected via jumpers: High, Medium and Low. The frequency can be measured via PUL and common cathode connection (GND). 🔍 CONNECTIONS:PUL+ and PUL- are positive and negative pulse connections; EN+ and EN- are positive and negative enable connections; DIR+ and DIR- are positive and negative direction connections. These six lines are connected to the corresponding pulses and directions, so there can be six types of connections. 🔍PWM CONTROLLER POWER SUPPLY:15-160VDC or 5-12VDC When using a 5-12VDC power supply, the positive terminal is connected to the 5-12VDC input and the negative terminal is connected to the common cathode. Forward and reverse motor rotation can be controlled via the keypad., Manufacturer: Samfox