Introduction With the development of the national economy and the improvement of people’s living standards, people are paying more and more attention to the improvement and beautification of the living environment. The musical fountain system's unique combination of sound, light, water and color has become an important part of urban landscape construction. Domestic large and medium-sized cities have already competed to build music fountains and have developed to small cities, making the music fountain system increasingly popularized and applied. This article mainly introduces the composition of the music fountain system and the application of the four-way inverter in the music fountain control system. It also expounds that the music fountain puts forward some requirements for the application of the frequency converter.
First, the composition of the musical fountain system General musical fountain system is mainly composed of audio control system, fountain control system and light control system.
1, audio control system:
Mainly by the music player, preamplifier, power amplifier, monitor speakers and sound column, most systems use multimedia computer program to play music, its composition as shown in Figure 1.
2, fountain control system:
It is mainly composed of fountain controller (PLC), frequency converter, water pump, multi-function valve, universal sprinkler and water supply pipe. The fountain pump has adopted frequency conversion speed control technology to achieve stepless speed regulation of the pump, which can be based on the strength of the audio signal. The speed of the pump is adjusted at any time. The multi-function valve and the universal sprinkler are controlled by a fountain control (PLC), as shown in Figure 2:
3, lighting control system:
It is 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 the host computers use a multimedia industrial PC (or PLC) to make real-time sound control. The fountain system can be controlled according to the melody, rhythm, and audio strength of the music. With the lamp control, an on-site control system integrating sound, light, and electricity can be realized.
Second, the frequency changer uses in the music fountain system The frequency changer uses in the musical fountain, the frequency changer receives the fountain controller signal (the communication signal or the analog quantity signal) to change the rotational speed, this signal completes by the audio frequency control system, The effect of the fountain changes in real time following changes in the rhythm of the music.
1. System Solution Introduction The E380 series inverter is a high-reliability universal inverter introduced by Sifang Corporation. It has the following features:
(1) Strong overload capacity 150% rated current 60S; 180% rated current 2S
(2) wide speed range 1:100
(3) Stable accuracy ± 0.5%
(4) Fast dynamic response <=20ms
(5) Excellent acceleration and deceleration characteristics 0.1S
(6) High reliability E380's excellent acceleration and deceleration characteristics can be matched with the load pump to achieve the shortest time and smooth acceleration and deceleration, can change the output frequency of the frequency converter instantaneously along with the change of the audio signal, thus changing the waveform of the fountain water column, making the water column waveform and The audio signal is synchronized and undistorted.
2. Inverter system wiring diagram The wiring diagram of E380 series inverter is as follows:
3, inverter parameter setting F0.1 = 0004 analog VC1 set frequency F0.4 = 0001 control command is terminal control F0.7 = 20.00 lower limit frequency is 20.00HZ
F0.10=1.5 acceleration time is 1.5S
F0.11=1.5 deceleration time 1.5S
F3.8=16 relay output is inverter fault F6.1=3 fault self-recovery to 3 times F6.2=0.5 fault auto recovery interval is 0.5S
4, debugging steps and precautions (1) according to the electrical diagram wiring, and according to given parameters, set the inverter parameters;
(2) The system is started to observe whether the fountain follows the music player's music rhythm. According to the site conditions, the acceleration/deceleration time is modified, and the input analog value is corrected according to the height of the water column;
(3) Modify the lower limit frequency of the frequency converter according to the minimum water column requirement;
5, Frequently Asked Questions:
(1) Audio signal interference problem. Harmonic interference in the music fountain system will be amplified by the amplification system to form a harsh noise, which can be resolved by: 1 reducing the carrier frequency of the frequency converter; 2 reliable grounding of the frequency converter; 3 controlling the audio signal away from the power line of the frequency converter; 4 audio signal power supply and inverter power supply isolation (2) inverter protection issues. The fountain pump adjusts the rotational speed at any time with the strength of the audio signal. This requires the inverter to respond quickly. The acceleration and deceleration time should be as short as possible when adjusting the parameters of the inverter. However, if the acceleration/deceleration time is too short, overcurrent protection is prone to occur. The actual conditions set the appropriate acceleration and deceleration time.
Third, the successful application of the Quartet E380 series inverter in a project provides an application example for the music fountain control industry. It has been proved that the E380 can meet the requirements of music fountains, and the high stability of the inverter at the same time of substantial energy saving. Brought wonderful feelings to customers.
First, the composition of the musical fountain system General musical fountain system is mainly composed of audio control system, fountain control system and light control system.
1, audio control system:
Mainly by the music player, preamplifier, power amplifier, monitor speakers and sound column, most systems use multimedia computer program to play music, its composition as shown in Figure 1.
It is mainly composed of fountain controller (PLC), frequency converter, water pump, multi-function valve, universal sprinkler and water supply pipe. The fountain pump has adopted frequency conversion speed control technology to achieve stepless speed regulation of the pump, which can be based on the strength of the audio signal. The speed of the pump is adjusted at any time. The multi-function valve and the universal sprinkler are controlled by a fountain control (PLC), as shown in Figure 2:
It is 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 the host computers use a multimedia industrial PC (or PLC) to make real-time sound control. The fountain system can be controlled according to the melody, rhythm, and audio strength of the music. With the lamp control, an on-site control system integrating sound, light, and electricity can be realized.
Second, the frequency changer uses in the music fountain system The frequency changer uses in the musical fountain, the frequency changer receives the fountain controller signal (the communication signal or the analog quantity signal) to change the rotational speed, this signal completes by the audio frequency control system, The effect of the fountain changes in real time following changes in the rhythm of the music.
1. System Solution Introduction The E380 series inverter is a high-reliability universal inverter introduced by Sifang Corporation. It has the following features:
(1) Strong overload capacity 150% rated current 60S; 180% rated current 2S
(2) wide speed range 1:100
(3) Stable accuracy ± 0.5%
(4) Fast dynamic response <=20ms
(5) Excellent acceleration and deceleration characteristics 0.1S
(6) High reliability E380's excellent acceleration and deceleration characteristics can be matched with the load pump to achieve the shortest time and smooth acceleration and deceleration, can change the output frequency of the frequency converter instantaneously along with the change of the audio signal, thus changing the waveform of the fountain water column, making the water column waveform and The audio signal is synchronized and undistorted.
2. Inverter system wiring diagram The wiring diagram of E380 series inverter is as follows:
F0.10=1.5 acceleration time is 1.5S
F0.11=1.5 deceleration time 1.5S
F3.8=16 relay output is inverter fault F6.1=3 fault self-recovery to 3 times F6.2=0.5 fault auto recovery interval is 0.5S
4, debugging steps and precautions (1) according to the electrical diagram wiring, and according to given parameters, set the inverter parameters;
(2) The system is started to observe whether the fountain follows the music player's music rhythm. According to the site conditions, the acceleration/deceleration time is modified, and the input analog value is corrected according to the height of the water column;
(3) Modify the lower limit frequency of the frequency converter according to the minimum water column requirement;
5, Frequently Asked Questions:
(1) Audio signal interference problem. Harmonic interference in the music fountain system will be amplified by the amplification system to form a harsh noise, which can be resolved by: 1 reducing the carrier frequency of the frequency converter; 2 reliable grounding of the frequency converter; 3 controlling the audio signal away from the power line of the frequency converter; 4 audio signal power supply and inverter power supply isolation (2) inverter protection issues. The fountain pump adjusts the rotational speed at any time with the strength of the audio signal. This requires the inverter to respond quickly. The acceleration and deceleration time should be as short as possible when adjusting the parameters of the inverter. However, if the acceleration/deceleration time is too short, overcurrent protection is prone to occur. The actual conditions set the appropriate acceleration and deceleration time.
Third, the successful application of the Quartet E380 series inverter in a project provides an application example for the music fountain control industry. It has been proved that the E380 can meet the requirements of music fountains, and the high stability of the inverter at the same time of substantial energy saving. Brought wonderful feelings to customers.
The engine cover (also known as the engine hood) is the most eye-catching body component. The main requirements for the engine cover are heat and sound insulation, light weight, and strong rigidity.
Why do some wheel loader hoods use FRP instead of iron? For example, SEM wheel loader.
If the glass fiber reinforced plastic makes the gravel smashed, it will be pitted, the paint will fall off, and the rust will become longer. FRP does not require care, and it is tougher than iron sheet and is not easy to be injured
We have SEM 50F, 650 loader engine hood, Lonking 855 loader engine hood, Liugong loader ZL50CN, 862H, 856 engine hood, SDLG 956L 952H 953 loader engine hood, XCMG engine hood LW500KL and more.
Steel Engine Hood,Truck Engine Hood,Iron Engine Hood,Custom Engine Hood
Shandong Tianfu International Trade Co.,Ltd. , https://www.tfloaderparts.com