Introduction

With the development of the national economy and the improvement of people's living standards, people pay more and more attention to the improvement and beautification of the living environment. The music fountain system has become an important part of urban landscape construction with the unique effects of sound, light, water and color. Large and medium-sized cities have rushed to build musical fountains and develop into small cities, making the music fountain system increasingly popularized. This paper mainly introduces the composition of the music fountain system and the application of the frequency converter in the music fountain control system, and expounds that the music fountain puts forward some requirements for the inverter application.

1. Composition of the music fountain system

The general music fountain system is mainly composed of an audio control system, a fountain control system and a lighting control system.

1.1, audio control system:

It is mainly composed of a music player, a preamplifier, a power amplifier, a monitor speaker and a sound column. Most of the systems use a multimedia host computer program to play music.

1.2, fountain control system:

It is mainly composed of fountain controller (PLC), frequency converter, water pump, multi-function valve, universal nozzle and water supply pipe. Fountain water pump has adopted frequency conversion speed regulation technology to realize stepless speed regulation of water pump, which can be based on the strength of audio signal. Adjust the pump speed at any time, multi-function valve and universal nozzle are controlled by fountain control (PLC)

1.3, lighting control system:

Controlled by a fountain control (PLC).

The music fountain control system integrates audio control technology, program control technology and intelligent control technology into one control system. It belongs to an industrial field control system. Most of its upper computer is composed of multimedia industrial PC (or PLC), real-time sound control. The fountain system can be controlled according to the intensity of the music, the rhythm and the intensity of the audio, and the lamp control can realize the complicated on-site control system integrating sound, light and electricity.

2. Application of frequency converter in music fountain system

The application of the frequency converter on the music fountain, the frequency converter receives the signal of the fountain controller (communication signal or analog signal) to change the rotation speed. This signal is completed by the audio control system to realize the change of the fountain in real time following the change of the music rhythm. effect.

2.1, system program introduction

The C500 series inverter is a high performance vector inverter with the following features:

(1) Strong overload capability 150% rated current 60S; 180% rated current 2S

(2) Wide speed range 1:100

(3) High speed accuracy ±0.5%

(4) Dynamic response is fast <=20ms

(5) Excellent acceleration and deceleration characteristics 0.1S

(6) High reliability

C500 excellent acceleration and deceleration performance with load pump to achieve the shortest time smooth acceleration and deceleration, with the change of audio signal, instantly change the output frequency of the inverter, thus changing the waveform of the fountain water column, so that the water column waveform and audio signal are synchronized, Not distorted.

2.2, inverter system wiring diagram

The wiring diagram of C500 series inverter is as follows:

3. End

The successful application of SINCR C500 series inverter in a project provides an application example for the music fountain control industry. It turns out that the C500 can meet the requirements of the music fountain, and the high stability of the inverter is brought to the customer while saving energy. Come a wonderful feeling.