| Customization: | Available |
|---|---|
| Customized: | Customized |
| Brand: | Hengyu |
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HC2020 electric room environmental control system is an advanced computer fuzzy control system. It has the functions of measuring the ambient temperature and humidity, displaying and controlling the temperature and humidity system. It also has the functions of lighting switch, ultrasonic mouse repellent, auxiliary AC power supply, real-time clock display and so on. It can be widely used in substations, switch rooms, transformer rooms, automation rooms, communication rooms and other places. HC2020 electric room environment control system is equipped with frequency conversion fan control function. It can be connected with HC2020-BP frequency conversion control cabinet through a dedicated communication line, and the control output function of frequency conversion fan can be added on the basis of the original power room environment control to achieve noise reduction. The purpose of energy saving.
1. Features and functions
1.1 Data measurement and display
The real-time clock, the temperature and humidity of the surrounding environment, and the current control status of the controller are displayed on the same screen.
1.2 Human-computer interaction function
(1) Adopt true color 7-inch TFT true color display, automatic backlight control;
(2) Parameter display: Through touch screen operation, various parameters can be displayed in rotation;
(3) The real-time display refresh cycle is 1 second.
1.3 Temperature and humidity control function
The CPU automatically controls the pull-in of 5 relays (respectively connected to "lighting", "exhaust fan", "louver fan", "infrared lamp" and "heating wire") by collecting the temperature and humidity of the environment to realize the control of the temperature and humidity of the environment. Real-time control. When the ambient humidity is high, the "infrared lamp" and "heating wire" that have been connected to the designated relay will automatically operate, and the ambient temperature will rise. When the ambient temperature is high, the "fan" connected to the designated relay will automatically operate to strengthen air convection and achieve the purpose of cooling and reducing humidity.
1.4 Mouse repellent function
In addition to controlling five relays related to the environment, the CPU also controls a relay connected to the mouse repellent to drive away the rodents and prevent them from destroying the electric room.
1.5 Controller communication interface
The controller has an independent network interface, USB interface, standard RS232 interface, and supports 645 communication protocol (see 9. Serial port time calibration).
1.6 Automatic recovery function and debugging maintenance
The controller has an automatic recovery function, and the recovery time is 2S.
1.7 Online upgrade
The controller connects to the computer through the RJ45 network interface to directly download the program to realize the online upgrade function.
2. Main technical indicators
2.1 Normal use conditions
(1) Ambient temperature: -20°C~+60°C;
(2) Relative humidity: 0~95% (no condensation);
(3) Atmospheric pressure: 79.5~106.0kPa (2000m above sea level and below);
(4) Working voltage: 5V DC.
2.2 Extreme conditions of use
(1) Ambient temperature: -40°C~+70°C;
(2) Relative humidity: 0~95% (no condensation).
2.3 Transportation and storage conditions
(1) Ambient temperature: -40°C~+70°C;
(2) Relative humidity: 0~95% (no condensation).
2.4 Measurement accuracy
(1) Temperature measurement: ±1% ºC;
(2) Humidity measurement: ±3%RH.
2.5 Electrical properties
2.5.1 Temperature rise
Under the rated working conditions, the temperature rise of the circuit and the insulator does not affect the operation of the controller. Under the condition that the environment does not exceed 70 ºC, the temperature rise of any point on the external surface of the controller does not exceed 25K, and all parts are not damaged, and the work is normal, and the insulation is normal.
2.5.2 Insulation properties
Under normal use conditions, considering possible atmospheric influences and voltage changes, the controller can maintain sufficient dielectric properties, and can withstand 4kV impulse voltage and 2kV AC voltage experiments, and no arc discharge or breakdown occurs under the experimental conditions , and keep the data and program unchanged, and work accurately and normally.
2.5.3 Electromagnetic Compatibility (EMC)
2.5.3.1 Immunity to electromagnetic disturbance
The design of the controller can ensure that conduction and radiation electromagnetic interference and electrostatic discharge will not cause interruption damage or have no substantial impact on the terminal, which can meet IEC61000-4-2: 1995, IEC61000-4-3: 1995, IEC61000-4-4: 1995, IEC61000-4-5: 1995 Electromagnetic Compatibility Test Standard Requirements.
2.5.3.2 Radio interference suppression
The controller does not produce conduction and radiation noise that can interfere with other equipment, and meets the requirements of the CISPR22:1993 "Radio Interference Characteristics Limit Values and Measurement Methods of Information Processing Equipment" B-class equipment experimental standards.
2.5.3.3 Resistance to external magnetic field
Under normal working conditions, the controller can withstand the influence of an external magnetic field with a strength of 0.5mT, the program runs normally, and the memory data will not be lost.
2.6 Safety performance
(1) Under normal experimental atmospheric conditions, the insulation resistance shall not be less than 100MΩ.
(2) The controller can guarantee normal operation for 24 hours under the limit temperature, and its main performance should meet the relevant regulations of technical requirements.
3. Frequency conversion strategy and parameter setting of HC2020 environmental control system
The higher the ambient temperature, the higher the output frequency of the inverter, the higher the fan speed, the greater the heat dissipation, and the lower the ambient temperature. As the temperature decreases, the output frequency of the inverter begins to decrease, and the fan speed begins to decrease, finally reaching a dynamic balance. The central processing unit of the HC2020 environmental controller system forms temperature change trend data according to the temperature data collected in real time, generates the actual output frequency value of the inverter according to the preset data and processing logic, and dynamically adjusts the speed of the fan. The purpose of noise reduction and energy saving is achieved on the basis of temperature.
Specifications:
| Dimensions: 350×250×150 (mm) (length×width×thickness); Installation size: 380×180 (mm) (length×width). |
Founded in 2003, Hengyu Instrument is headquartered in Dongguan City, Guangdong Province. It is a national high-tech enterprise specializing in R&D and manufacturing of various quality testing instruments. Products are widely used in: national quality inspection and commodity inspection institutions, scientific research, colleges and universities, rubber and plastics, shoemaking, leather, textile, metal, luggage, stationery, baby carriages and other industries, for new product development, physical property testing, teaching The necessary equipment for research, quality control, and raw material inspection. The main products are tensile machine, tensile testing machine, universal material testing machine, universal tensile machine, shoe industry, luggage testing equipment, etc.
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