As modern society becomes more electrified, digitalized, and intelligent, Phoenix Contact has a deep understanding of the enabling of an all-electric society (AES) and technological innovations for a livable future.
On the occasion of its centennial, Phoenix Contact continues to develop and expand its product line with the belief of "· 100 years of passion and leading · technological innovation". In order to ensure the power supply quality of electrical equipment and avoid electromagnetic interference, the electromagnetic compatibility filter EMI Filter will be newly launched in 2022 to provide a clean filtration solution for high-frequency electromagnetic interference to ensure the safe and reliable operation of the system.
01. Causes of electromagnetic interference
In modern electrified society, there are many sources of electromagnetic interference noise, among which nonlinear loads (especially frequency converters, servo drives, switching power supplies) are the most typical noise sources.
02. Effect of electromagnetic interference
● Loss or damage of data from the device;
● Controllers, motors, inverters and other equipment cannot be powered and operated normally due to interference sources;
● The button signal is invalid;
● Indicator light strobe;
● The power supply voltage of the low-voltage distribution system is damaged.
03. The problem of electromagnetic interference forms three elements
● Sources of electromagnetic noise
● Coupling pathway
● Sensitive equipment
Because most of the electromagnetic noise sources and sensitive equipment are mature products, it is difficult to rectify the electromagnetic compatibility inside them in a short time, so the most economical and convenient way to rectify the EMC electromagnetic compatibility problem is to rectify the "coupling path".
"Solution"
External EMI filter + shielded cable
The effect of EMI filters to filter out high-frequency interference
We can provide the most suitable design concepts and solutions
● The three-phase EMI filter is installed at the input end of the inverter (electromagnetic noise source) to suppress the conduction of electromagnetic interference to the power grid side;
● The single-phase EMI filter is installed at the input end of the switching power supply (sensitive load circuit): resist electromagnetic crosstalk on the grid side and the nonlinear load side;
● Partition concept of electric control cabinet: the interference equipment and susceptible equipment are arranged by the grounding partition plate, and the power line and control line are distributed in different trunking for wiring.
Advantages of EMI filters
● Reduce the frequency of electromagnetic interference, such as reducing data packet loss, improving the quality of communication lines, and reducing the degree of electromagnetic crosstalk;
● Ensure the safe and trouble-free operation of the machine and equipment, and prolong the operation life of the equipment;
● Assist the whole machine equipment to carry out electromagnetic compatibility testing and certification in related industries.
"Instance Sharing"
A high-end equipment manufacturing enterprise of semiconductor deposition film equipment, magnetron sputtering equipment, evaporation equipment and ion beam deposition equipment are widely used in microelectronics, industrial sensors, automotive electronics, optics and energy and other fields.
PART 1 Pain point communication
A large number of nonlinear loads such as frequency converters and servos are used in machine equipment, and the PLC and a variety of sensors of the upper computer of the electronic control system are subject to strong electromagnetic interference; It is desirable to install a convenient filter to filter out interference when the existing space is limited.
PART 2 Service Actions
After receiving the request, Phoenix Contact responds as soon as possible, using precision test instruments such as EMI receivers to measure the electromagnetic noise of the electronic control system as a whole, and then comprehensively measure the conduction and radiation of noise sources and sensitive equipment, and systematically diagnose and analyze them.
PART 3 Scenario development
According to the customer's pain points, combined with the unique highlights of the following three-phase three-wire EMI filters of ultra-thin, rail mounting, and full-mode protection, we match the customer's pain points, and give more suggestions to customers from the layout of cables and electrical devices. After subsequent measurements, the effect was remarkable, and the three-phase three-wire FIL-3C-1E series filter was finally adopted.
PART 4 Final Optimization Point
● The anti-interference and stability of the overall system are significantly improved;
● Ultra-thin & convenient wiring, saving man-hours and cabinet space;
● In the electromagnetic compatibility certification of the semiconductor industry, professional technical support has been obtained;
Based on customer needs
Phoenix Contact's EMI filter family follows the pulse of the market, closely follows the most real needs of customers, pursues innovation, and looks forward to more all-round new products!
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