IIOT Solution, Machinery and VFD Applications
Interested in the future of IIOT solution? Explore how automation is changing the game and improving efficiency in the industry. Discover more about application of this innovative approach.
Challenges and limitations of IIoT
Several challenges and issues in its implementation and adoption in the industrial sector
Too expensive
Complicated Software and machine
Continuous Monitoring and grab the data information
Industrial Solutions
IIOT Solutions
Machinery Solutions
VFD Solutions
Success Story Application
Automatic color pen assembly machine
1.Introduction
Automatic color pen assembly machine is that automatic assembling watercolor pen, pen and other types of pen , with reverse, pen mouth, rice head, copper head, fiber head, big hat, hat and complete assembly process Function.
2.Process requirements
Each vibration table sends accessories, the spindle drives each axis to move forward , through the spindle encoder to locate the assembly process action of different interval.Which could test defective product, and automatic nesting for defective products.
3.The program
The control system used WECON LEVI-700LK hmi, LX3V-2416MT4H plc
The main program is as follows: PLC communicate with inverter , control the speed. Using the spindle encoder as positioning of the angle working interval. encoder as the angle of work range positioning, using high-speed counter C252 (with Z phase), and the E-cam instruction to realize the action distribution.
4.The introduction of project
HMI program: the screen is mainly the action interval of the process steps, the equipment, such as the location of important parameters.
The part of PLC program:
Inverter communication and filter setting program
E-cam program
5.The summary of program
1, The system depends on the encoder interval positioning, which mainly rely on ABSD instructions. The operation of this instructions is a multi-segment comparison, which realizes E-cam control. The form, the counter, etc. are set in absolute manner.
2, Additional offset count, residual tracking program, making the system control program more reliable.
6.The photo of project
Automatic Sticking Machine Control System
Brief Introduction
The automatic sticking machine cuts and glues the plywood to a certain depth through a preset tool, and then conforms to the wooden strip sent by the servo， in last to form a woodworking product.
Process Requirement
Based on the control of the strip device technology, six new stepper motor controls are added to achieve the tool distance setting function, which can be quickly move to a preset distance to achieve precise control.
Solution Analysis
The control system adopts the HMI LEVI2070D, and the PLC LX3V-1616MR2H and two LX3V-4PG expansion modules.
Reasons for selection: Woodworking machinery mostly uses relay type PLC as the main control, and directly controls peripherals such as solenoid valves or inverters. At the same time, the customer requires compatibility with the previous control scheme, and the tool can be changed to mechanical manual tool setting.
Therefore, in the selection, the number of relay points of LX3V-1616MR2H meets the requirements. In the aspect of 6 tool control, the LX3V-4PG expansion module can be used uniformly to meet the requirements. Based on the above factors, the selection configuration was carried out.
Main control principle: The original servo control still uses the output point on the PLC for control. The original program does not change. The new program only increases the control of the LX3V-4PG to 6 stepping motors.
To realize the fixed-length operation control of the stepping motor in the program, it is necessary to have all functions such as finding the origin, manually jogging, manual shifting, and automatic running. Provide debuggers with as many modes of operation as possible to achieve the best debugging results and user experience.
Program Brief Introduction
HMI program
Main Page
Motor Setting Page
Detailed Debugging Screen of One of the Stepper Motors
PLC Program
LX3V-4PG Manuel Setting
Project Summary
During the debugging, there was a problem that the positioning of the stepping motor was inaccurate. After many tests, the solution was found. That is, it is necessary to connect a 2K resistor in series between the pulse and direction of the stepping motor. This has something to do with the brand of the driver of different stepping motors. It is recommended that the customer do the serial processing regardless of the brand to ensure the accurate operation of the equipment.
This debugging summarizes the following points:
1.Select the plan according to the needs, not only considering the cost, but also the compatibility of the general program.
2.For the LX3V-4PG expansion module, it is necessary to pre-plan the address. The control requirements of the six stepper motors are the same, but the addresses are different. If you can pre-plan the addresses nicely, you can get twice the result with half the effort.
3.For problems that arise during debugging, be sure to check them from start to end, eliminate the factors of the problems one by one, and finally fix the problems.
VFD Application
Application of VB VFD in Air Conditioning System
1.Industrial Background
Central air conditioning system is an indispensable and important component in modern buildings. With the improvement of people's living standards and the acceleration of urbanization, the application of central air conditioning systems is becoming more and more widespread, and the market size is increasing year by year. In the past decade, the application scope of central air conditioning systems has continued to expand, not only in traditional commercial and industrial fields, but also in residential, medical, transportation and other fields. Energy saving, environmental protection, comfort and safety have become the main technical features of central air conditioning systems.
2.User Requirements
With the continuous advancement of technology, the energy efficiency ratio and performance coefficient of central air conditioning systems continue to improve, which has also made a significant contribution to energy conservation and emission reduction.
However, there are currently some pain points in central air conditioning system technology:
1) Energy saving: How to reduce energy consumption and improve energy utilization efficiency is the top priority of the current central air conditioning system.
2) Intelligence: How to use intelligent technology to realize automatic control and remote monitoring of the central air-conditioning system to maximize user satisfaction?
3) Diversification: How to make different types of central air conditioners cope with different usage scenarios to meet the needs of users?
4) Safety: How to strengthen the safety performance of central air conditioning and improve the safety, reliability and stability of the system?
3.Solution
The refrigeration principle of the central air-conditioning system is liquid vapor refrigeration, which achieves refrigeration by removing part of the vapor. The high-temperature gas increases the temperature of the water, condenses into liquid, and then evaporates into low-temperature gas, continuously circulating to achieve refrigeration. The heating principle is that the compressor inhales low-pressure gas and compresses it into high-temperature gas, increases the water temperature through the heat exchanger, and then condenses it into a liquid. The liquid enters the evaporator and evaporates into low-temperature gas, which is continuously circulated to deliver hot water to the room that needs heating to achieve heating.
System schematic diagram
VB VFD can achieve various purposes such as energy saving, improving system stability, safety and intelligence by automatically adjusting refrigeration pumps, cooling pumps and other equipment in central air-conditioning systems.
Electrical control diagram
Parameter Settings
4. Specific Effect Presentation
In the case application, VB VFD demonstrated multiple effects.
First, it has significant economic and energy-saving advantages. Through microcomputer control, the system can automatically adjust the temperature of the end air duct to achieve automated operation. The coils can be turned off even when no one is using them, further saving energy.
Secondly, the application of VB high-performance VFD makes the equipment start and stop more quickly and stably, and has the advantages of large starting torque and small impact on the power grid. This provides more efficient and reliable guarantee for long-term operation.
In addition, it has overload, overcurrent, overvoltage, phase loss and other protection functions, which can greatly improve the safety of the system. This enables the system to protect itself promptly and effectively in the face of various possible problems, further ensuring the stability and reliability of the system.
Finally, VB’s optimized programmable DI terminal allows the VFD to easily cope with the requirements of various occasions. It also provides greater flexibility for practical applications. Users can customize settings and operations according to actual needs to meet various application scenarios.
5. Photos at Site
Application of VB Series VFD in Internal Mixer
1. Industry Overview
With the development and progress of society, "green, environmental protection and sustainable" has been continuously mentioned in industrial production in recent years. However, in the traditional rubber production process, there will be a lot of harmful gases, energy waste, low efficiency, and insufficient energy saving. It is also imminent to reduce emissions, and then transform from open mixer to internal mixer to frequency converter application. From the open mill to the internal mixer, the emission of harmful gases can be effectively reduced. From the internal mixer to the application of VB series VFDs, the entire system has improved production efficiency and effectively reduced energy waste, and has also greatly improved the automation of rubber production.
2 .Internal mixer working principle and control requirements
2.1 Working Principle
The working principle of the internal mixer is to add raw materials at a specific temperature (depending on the materials used, some need to be heated, and some need to be cooled), and through the rotation of the rotor, the materials are sheared by using different speeds and speed ratios. And pressure, so as to break the molecular chain of the material, to achieve the plasticizing temperature environment, to mix the raw materials, so as to achieve the purpose of mixing, so that various additives and masterbatch can be fully mixed, so that the components can be evenly distributed .
2.2 Control Requirements
(1) During production, it is necessary to adjust the speed according to the rubber mixing speed of different materials;
(2) The soft start function is required to achieve smooth start without large inertial impact, etc.;
(3) Control parking function, smooth parking function.
(4) When adding too much material, it can automatically reduce the speed without reporting a fault。
3. Electric Wirings & Photos from Site
4.Parameter Settings
5 .Features of Solution
(1) The VB VFD has excellent acceleration and deceleration performance. It starts completely steplessly and smoothly when starting, has no impact on the power grid, and fully protects the motor, equipment machinery and power grid impact.
(2) VB has automatic current limiting, automatic torque boost, and when the current is too high, it will automatically reduce the frequency to reduce faults.
(3) To meet the flexible production process, the speed of products corresponding to different production materials can be adjusted freely, which greatly improves the production efficiency and quality.
(4) VB VFD has a complete protection system, which can protect the entire system from overvoltage, overcurrent, overheat and short circuit to ground.
Related IIOT WECON Products
H-Series
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