NA200 series PLC in the application of solar thermal engineering

Areas of application: energy-saving new/cycle/renewable energy a solar energy battery components, summary: with the rapid development of China's economy, improve people's quality of life in, there is an increasing demand for energy. The current conventional energy increasingly scarce, however, and prices are soaring. Solar energy as a clean renewable energy, its use more and more be taken seriously, solar thermal engineering for its unique energy saving and environmental protection advantages more and more widely accepted by people. A proud south extension technology co. , LTD. , the NA200 series PLC controller, for a scientific and rational developed a solar equipment manufacturer dedicated solar control system, good application effect. Second, the hardware configuration: this solar project choose the following products: CPU module: NA200 - CPU2402 an analog input: NA200 - AIM - 0401 a text display: NA200 - HIM5700 one another water level measuring component, collector, water tank, bracket, pipe and other complementary pieces of the number. Programming software: NA200Pro 2. 0 version 3, technological introduction: ( 1) Manually add water/heating/low circulating water tank, water tank temperature is too low, and the temperature difference is too big, can be manually adjusted, artificial adjustment in the process of automatic process terminated. ( 2) Automatic constant water level and water/heating water tank water level is lower than the constant water level automatic adding water, higher than the constant water level when the stop adding water. Tank temperature below the set temperature automatic heating, stop heating when the temperature exceeds the set temperature scope. ( 3) Between the collector and the tank using temperature cycle: meet water tank water level under the premise, through the text screen set collector temperature and tank temperature difference, temperature difference if exceeding the maximum limit temperature, start the cycle; As the lower limit temperature close to the temperature difference on both sides, closed loop, realized the circulation pump automatically opening and closing. ( 4) Period the tank timed water/heating/timing cycle within the set period of time, when the tank water level drop to water level lower limit automatically start adding water, water tank water level rise; Time time to stop adding water. When tank water level more than half, in setting the time period if smaller tank temperature, automatic start heating, temperature began to rise; Time to regularly, stop heating. In setting time, between the collector and the tank through the circulating pump automatic temperature adjustment. ( 5) Water/heating breakdown self check/cycle of breakdown self check breakdown self check for water/heating/cycle time is too long, but no significant change in water tank water level, temperature, temperature difference, the automatic stop process of water/heating process/cycle. This system process is mainly composed of the above aspects, NA200 series PLC built-in real-time clock ( RTC) Function, programming software NA200Pro can split second week while reading (date) (month) (year), make the text screen set the timing time can on time of communication with PLC controller, efficient to run the whole process in real time. Four. Conclusion: using NA200PLC controller and text panel solar collector as the core of engineering control systems, simple operation, convenient operation, low fault rate and for the user to create a healthy and comfortable living space. Solar projects will have a bright tomorrow.
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