Input voltage and output frequency signal The output signal can be fine-tuned, and the potentiometer can be adjusted to calibrate the corresponding relationship between voltage and frequency. Operating voltage: 13.5V-30V, input controllable voltage range: 0-10V Output frequency range: 0-10KHz The output of this module can be supplied to the driver for pulse signal. When it is matched with the driver, it needs to be connected with the male connection. The relevant connection is OC-OUT: connect the PUL-or PUL12-30V of the driver: connect the PUL or the common terminal 5V of the driver (when 12V is supplied, a 330R resistor should be connected in series, and when 13-24V is supplied, a 2.7K resistor should be connected to limit the current) The voltage to frequency module LM331_V2F is a module that can generate different frequencies according to the input voltage. The 0-10V voltage can be converted into a frequency pulse signal of 0-10KHz.