Description: It can convert the frequency pulse signal to analog voltage signal, transform 0-1KHz frequency signal into 0-10V voltage output Adjusting frequency can change output voltage, can be applied to interface conversion between PLC and frequency converter or interface matching control occasions like motion control card and frequency converter, etc Adjusting potentiometer can calibrate the relationships between frequency and voltage Specification: Operating voltage: 13.5V-30V Input frequency range: 0-1KHZ Output voltage range: 0-10V Size: Approx. 35mm x 33mm x 14mm Instructions for use VCC: Operating power supply GND: Power ground F: A input frequency pulse signal GND: input ground VOUT: output corresponding voltage GND: Output ground; Common ground for modules Connect the operating voltage to VCC and GND. Do not reverse it to avoid damaging the board and the device. Connect the frequency pulse signal to F and there is a corresponding voltage output at VOUT. Input and output corresponding relationship: 100HZ=1V, 1KHZ=10V. If there is a deviation in the correspondence between the use, adjust the potentiometer on the board to calibrate. The module accuracy is 1%, and it cannot be applied to fields which has high demanding of precision. Input different frequency, output will correspond to certain voltage. Input pulse level can be 5V, 12V, 24V, serial resistor not needed. But if you input signal frequency, the time should be more than 0.5s If you want to use it with PLC, it supports NPN. Please make sure that there is GND wire If you want to use it with encoder, it requires constant rotation of the encoder for more than 0.5s Package Includes: 2Pieces Frequency to Voltage Converter Module