The sea for the H60S0T series PLC control design scheme - on the high temperature sintering furnace Industrial control -

A background with home appliances products, application and development of industrial control products, each manufacturer in electronics accessories customized direction development, including electrical connector namely aviation connector is also more widely, we pick this time is a research and development projects to air conditioning sensor products supporting production of electrical connector products project, mainly for the application of high temperature and under the vacuum condition, the shape of the glass powder in accordance with the requirements for mould and encapsulation moulds, the copper wire bag inside, finally the melting glass glaze cools became good insulator between lead and seals.

this type of product application scope is widespread, air-conditioning accessories, electrical accessories and all kinds of industrial products all can use.

2, application requirements, the prototype has been produced, after customers in Qingdao products try to burn success, has been sent to customer for installation and debugging. Successfully trial-produced belongs to the initial stage, there has been no mass production product.

needs the following main features: 1)

Vacuum, customer product needs under vacuum forming, mainly in order to reduce the air bubble inside the connector, improve product quality, bubbles reduce but also to the shape of glass

2) Temperature, equipment need to rise to 1300 - degree heat, and continue for a period of time, cooperate with product during firing process, and the vacuum and other gases, the logical control for the demand is higher, the process flow must be controlled

3) Gas, nitrogen and hydrogen atmosphere, firing process to fit the condition of the temperature, the workpiece processing

4) Detection systems, safety equipment to use to water temperature, water pressure, gas pressure, vacuum degree and real-time monitoring of oxygen are

three, the design of the solution at the moment we are using pressure containers, tank in pressure vessel, open the hole we need, and welded pipes, do we need to shape and structure, then heater is installed in the tank pressure vessels, with copper electrode and transformer power system docking. So the body is ready.

heating part of the transformer and the resistance wire heating, with temperature control instrument and the dynamometer control, copper platoon as electrical connection carrier lee. Buy nanguang vacuum unit of a complete set of vacuum system, contract both sides of the control signal interface, with the switch quantity control start-stop of the unit. Other parts purchase dedicated gas control valves, using on-off control, on-off solenoid valve to open or not in the gaseous state control signals. All kinds of sensors to buy other mature switch products on the market, introducing PLC parts.

master control using a 60 points of PLC, make a control cabinet, install the PLC, and other intermediate relay, control switch, switch power products are installed, the operating interface chose a touch screen as human-computer interaction interface, facilitating the device status view, and the parts operation.

operation panel is installed on all kinds of instrument, and the action button, can be intuitive observation to the device's main state, easy to feeding and discharge, or linkage with a system to realize automatic operation. Water and gas pipeline is an important part of equipment, we invited the professional construction personnel for the construction, to ensure reasonable distribution of water and cooling effect, because there are hydrogen gas parts stainless steel pipe welding and become, ensure the sealing performance. Four, hardware configuration,

figure 1 field inside the control cabinet figure

figure 2 on-site control cabinet external figure

figure 3 on-site construction drawing

5, the software design figure 4 main program screenshots 1

5 main program screenshots 2

6, summarize the application I used mainly for mitsubishi PLC controller and PLC of Siemens, compare the two brands of PLC, the sea is in design, quality of mould do still quite good of, use rise more convenient also, programming software is easy to understand, to operate not hindered, the other application instruction set is rich also, although I don't use a lot of orders, but probably looked at the manual, can satisfy all my current job design, and the application of various industries.

this time had a high temperature sintering furnace, mainly used in the switch quantity control, is a relatively simple and conventional projects, many for the color edge didn't show up, such as the communication function and motion control applications, have the opportunity to have to use to see you next time. Feel our brand should also make a breakthrough on the product structure design, not limited to the existing model of PLC and the appearance, should be referred to the better rely on some industrial product appearance design, rich product line.

all in all the experience is good, the customer is satisfied. Thank you for sea PLC and support of the activity.

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