VFD 50hz to 60hz single phase 220v ac to 3 phase 380v / 415v

The single-phase 220V to three-phase 380V inverter adopts the AC-DC-AC circuit structure and uses SPWM modulation control technology to convert the ordinary single-phase 220V power to industrial three-phase 380V power. It is suitable for three-phase asynchronous motors with an output phase angle of 120°, which fully meets the standards for motor use and is suitable for various types of motor loads. The single-phase electric variable three-phase electric frequency converter solves the inconvenience caused by the three-phase electric power limitation in some areas, and also solves the user needs that cannot apply for the three-phase electric power due to site restrictions.

1. Technical characteristics:

· 220V input for ordinary city power, eliminating the cumbersome procedures for applying for three-phase power and various labor costs and various hidden costs

·The output uses industrial three-phase electricity, but it is charged according to civil single-phase electricity, which is economical

·The core components are all imported devices with stable performance and long service life

·Safe and reliable, the input single-phase electricity is completely electrically isolated from the output three-phase electricity

·The input wide voltage range is designed to adapt to the working environment with low mains voltage in various regions

·Perfect output protection function, with multiple protections such as overvoltage, overload, overtemperature, short circuit, overcurrent, etc.

·The single-phase 220V drive of the boost converter can be soft-started to drive the three-phase 380V asynchronous motor without the need for industrial three-phase 380V electric drive

·The output phase angle of the boost converter is 120°, which fully meets the motor use standards and is suitable for various types of motor loads.

The input frequency of the boost converter is 50/60HZ, and the output frequency is adjustable 0-650HZ

2. Matters needing attention:

·The step-up frequency converter belongs to the capacitance step-up. For the load, it is used for light-loaded sites below 22kw. In terms of type selection, the light-loaded motor is selected as a large-level inverter, and the heavy-loaded site is selected as a large-level Inverter.

·The boost converter can only be used for three-phase asynchronous motors, not as a power supply.

·The booster inverter is not suitable for the scene that needs to start and stop quickly, and the occasion of potential energy load.

The VFD frequency inverter for water pump

The load of the production equipment of industrial enterprises is mostly AC asynchronous motors, and the power consumption accounts for about 65% of the total power consumption of the enterprise. Especially the efficiency of the pump load is relatively low. After China joined the WTO in 2002, the enterprise must reduce costs To improve economic efficiency. In order to enhance competitiveness, in reducing production costs, saving electricity is an important economic link. For example, in a water supply station, the water supply system is adjusted according to the demand of water consumption, and the flow rate is adjusted by adjusting the valve of the pump out door. Special personnel are required to watch the valve under different circumstances. The labor intensity is large. At the same time, due to the forced throttling of the valve, the pump forms a vortex impact, which generates strong vibration and noise, which increases the unfavorable loss of the service life and maintenance of the pump. Furthermore, because the torque of the motor is basically constant, the water supply pressure formed by this adjustment method is high, causing severe throttling power loss, reducing the efficiency of the pump, and wasting electric power.

With the development of electric power technology, the frequency conversion speed regulation technology is becoming more and more perfect. The intelligent water supply control system with frequency conversion speed regulation as the core has replaced the previous high-level water tank and pressure tank and other water supply equipment. Therefore, the impact on the power grid during starting is avoided; because the average speed of the pump is reduced, the service life of pumps and valves can be extended; the water hammer effect during starting and stopping can be eliminated. Its stable and safe operation performance, simple and convenient operation mode, and complete and thoughtful functions will make the water supply realize water saving, electricity saving, manpower saving, and finally achieve the purpose of high efficiency operation.

 

Frequency conversion speed regulation has the following advantages:
①The slip rate is small, the slip loss is small, and the efficiency can be as high as 90 ~ 95%.
②Smooth stepless speed regulation is realized, with high precision, wide speed regulation range (0 ~ 100%), and large frequency variation range (0 ~ 50Hz).
③ The starting torque is large (up to 1.1 times of the rated value), and the soft start can reduce the impact of the starting current.
④ Improve the power factor on the grid side.
⑤Inverter can use high-speed 16-bit CPU and special large-scale integrated circuit, use software to realize V / 5 automatic adjustment, with the function of online control with computer programmable controller, easy to realize automatic control of production process.
⑥Easy installation, convenient debugging and simple operation.
⑦Not only suitable for energy-saving speed regulation of pumps and fans, but also suitable for the transformation of old equipment, especially for improving process conditions and product quality.

VSD 220v to 380v Spindle Inverters VFD AC drive frequency converter

Due to national policies and regional restrictions, many regions will now withdraw three-phase 380V industrial power. The cumbersome procedures for applying for three-phase electricity in areas without three-phase electricity, various labor costs, and various hidden costs have caused some Regions cannot use industrial 380V electricity, and general industrial equipment, such as motors, are mostly three-phase 380V, which cannot be operated without three-phase electricity, and can only find ways to convert single-phase 220V to three-phase 380V, but Many single-phase 220V electric liters and three-phase 380V equipment on the market are ridiculously expensive, and many users in need are discouraged. The original machine can only be placed temporarily or used in other places with industrial electricity.

Now our company has introduced a single-phase 220V input to three-phase 380V output boost converter, which can drive the three-phase asynchronous motor to start softly and perform stepless speed regulation. The input power only needs single-phase 220V and output three-phase 380V, and most users can accept the price. It is about 1/10 of the price of the booster on the market. It is small in size and powerful in function. Solve the embarrassing situation that industrial equipment does not have three-phase electricity.

2. Introduction of the principle and characteristics of 220V to 380V inverter

The principle of the frequency converter is the principle of applying frequency conversion technology and microelectronic technology. The power control equipment of the AC motor is controlled by changing the frequency of the working power of the motor, and the power frequency AC with a fixed voltage and frequency is converted into a variable voltage or frequency. The device for alternating current is called “frequency converter”.

The output waveform of the frequency converter is an analog sine wave, which is mainly used for the speed regulation of three-phase asynchronous motor, also known as frequency converter. The frequency converter is mainly composed of rectification (AC to DC), filtering, inverter (DC to AC), braking unit, drive unit, detection unit micro-processing unit, etc. The frequency converter mainly adopts the AC-DC-AC method (VVVF frequency conversion or vector control frequency conversion). First, the power frequency AC power is converted into a DC power through a rectifier, and then the DC power is converted into an AC power that can be controlled by frequency and voltage to supply electric motor.

The 220V to 380V frequency converter converts the power frequency AC 220V power supply to a DC power supply through a rectifier (voltage doubler rectification), and then converts the DC power supply into a three-phase 380V AC power supply that can be controlled by frequency and voltage to supply the motor.

2.1 Inverter function

1. Can reduce the impact on the power grid, it will not cause the problem of excessive peak-valley difference.

2. The acceleration function can be controlled, so as to smoothly accelerate according to the needs of users;

3. The stopping mode of the motor and equipment can be controlled, making the entire equipment and system safer, and the life will be increased accordingly;

4. Control the starting current of the motor, fully reduce the starting current, and reduce the maintenance cost of the motor;

5. Can reduce the wear of mechanical transmission components, thereby reducing procurement costs, while improving system stability.

6. Reduced motor starting current and provide more reliable variable voltage and frequency.

7. Effectively reduce the reactive power loss and increase the active power of the power grid

8. Optimize the technological process, and can change rapidly according to the technological process, but also realize the speed change through remote control PLC or other controllers.

VFD Single-phase 220V Input to three-phase 380V Output inverter

Single-phase 220V to three-phase 380V inverter adopts AC-DC-AC circuit structure and uses SPWM modulation control technology to convert ordinary single-phase 220V to industrial three-phase 380V. It is suitable for three-phase asynchronous motors with an output phase angle of 120 °, which fully meets the motor use standards and is suitable for various types of motor loads. The single-phase power transformer three-phase power inverter solves the inconvenience caused by the three-phase power limitation in some areas, and also solves the needs of users who cannot apply for three-phase power due to site constraints.

3.1 Technical characteristics:

· 220V input for ordinary city power, eliminating the tedious procedures of applying for three-phase power, various labor costs, and various hidden costs

· The output uses industrial three-phase power, but it is charged according to civilian single-phase power, which is economical.

· The core components are imported devices, with stable performance and long service life.

· Safe and reliable, the input single-phase power is completely electrically isolated from the output three-phase power

· Wide input voltage range design to adapt to the working environment where the mains voltage is low in all regions

Complete output protection function, with multiple protections such as over-voltage, overload, over-temperature, short-circuit, over-current, etc.

Fourth, the inverter installation environment requirements

4.1 Electrical use conditions Prevent electromagnetic interference. Due to the rectification and frequency conversion of the inverter, a lot of interference electromagnetic waves are generated around the inverter. These high-frequency electromagnetic waves have some interference with nearby instruments and instruments. Therefore, the instrument and electronic system in the cabinet should use metal shells to shield the inverter from interference with the instrument. All components should be reliably grounded. In addition, the connection between electrical components, instruments and meters should be shielded control cables, and the shielding layer should be grounded. If the electromagnetic interference is not handled properly, the entire system will often be inoperable and the control unit will malfunction or be damaged.

4.2 Ambient temperature: The ambient temperature of the inverter refers to the temperature near the section of the inverter. Because the inverter is mainly composed of high-power power electronic equipment that is susceptible to temperature, the life and reliability of the inverter depend on the temperature to a large extent, generally -10 ℃ ~ +40 ℃. In addition, the heat dissipation of the inverter itself and the extreme conditions that may occur in the surrounding environment need to be considered. Generally, there is a certain margin for the temperature.

4.3 Ambient humidity: The relative humidity requirement of the inverter to its surrounding environment is not more than 90% (no condensation on the surface).

Vibration and shock: During the installation and operation of the inverter, care must be taken to avoid vibration and shock. To avoid loose solder joints and parts of the internal components of the inverter, causing serious electrical faults and even short circuits. Therefore, it is generally required that the vibration acceleration of the installation site is limited to 0.6 g or less, and special places can be added with anti-vibration measures such as anti-vibration rubber.

4.4 Installation place: The maximum allowable output current and voltage of the inverter are affected by its heat dissipation capacity. When the altitude exceeds 1000 m, the inverter’s cooling capacity will decrease. Therefore, the inverter is generally required to be installed below 1000 m above sea level. Abnormal environmental conditions, such as exposure to excessive dust, altitude> 1000 m, etc., require special selection Structural or protective parts.

4.5 Inverter storage: In practice, the inverter is generally installed on the field equipment or installed nearby. If the site environment is poor (high temperature, humidity, dust), the inverter can be placed in the power supply under the conditions allowed by the operation. Control room. When the operator is placed on site, for the safety of the inverter, the general ambient temperature should be -10 ℃ ~ + 50 ℃. When it is used in the open air, such as oil fields, offshore oil wells, mines, etc., the winter temperature should be lower than -10 ° C, you can use an electric heater to heat it, and place the inverter in an external box; in summer, the ventilation can be enhanced when the temperature is above + 50 ° C, Insulation coating is applied to the outside of the box to reduce radiation and heat conduction. According to the actual situation on the scene, according to local conditions, artificially try to improve the environment and ensure safety. For harsh environments such as dust and fiber on site, the inverter should be placed in a box, and a filter screen should be installed at the air inlet and outlet to periodically clean and strengthen maintenance.

6.2 Notes:

· Boost inverter is a capacitor booster. For the load, it is used for light-loaded sites under 22kw. In the selection, the light-duty motor is selected by a large-level inverter, and the heavy-duty field is selected by a large-level inverter. Inverter.

· Boost inverter can only be used in three-phase asynchronous motors, not as a power source.

· Boost inverter is not suitable for the site that needs quick start and stop, and occasions with potential energy load

VFD Single-phase 220V to three-phase 380V boost inverter

First, the market demand

Due to national policies and regional restrictions, many regions will now withdraw three-phase 380V industrial power, and the cumbersome procedures for applying three-phase electricity in areas without three-phase electricity, various labor costs, and various hidden costs, etc., lead to some The region cannot use industrial 380V electricity, and general industrial equipment, such as motors, are mostly three-phase 380V. In the absence of three-phase electricity, it can not be operated. Only a way to convert single-phase 220V into three-phase 380V, but Many single-phase 220V electric three-phase 380V equipment on the market are expensive and outrageous, which makes many users in need have to be discouraged. The original machine can only be temporarily placed or placed in other places with industrial power.

Now our company has introduced a single-phase 220V input to three-phase 380V output inverter, which can drive the three-phase asynchronous motor to start up smoothly and carry out stepless speed regulation. Input power only needs single-phase 220V, output three-phase 380V, and most users can accept the price. It is about 1/10 of the price of the booster on the market. It is small in size and powerful in function. 0-650Hz can be adjusted freely. Solve the embarrassing situation that industrial equipment does not have three-phase electricity.

Second, the principle and characteristics of 220V to 380V inverter

The principle of the frequency converter is to apply the principle of frequency conversion technology and microelectronic technology. The power control equipment of the AC motor is controlled by changing the frequency of the working power of the motor, and the power frequency alternating current with constant voltage and frequency is converted into voltage or frequency. The device of alternating current is called “inverter”.

The waveform outputted by the inverter is an analog sine wave, which is mainly used for three-phase asynchronous motor speed regulation, also called frequency converter. The frequency converter is mainly composed of rectification (AC to DC), filtering, inverter (DC to AC), braking unit, drive unit, and detection unit micro processing unit. The frequency converter mainly adopts the AC-DC-AC mode (VVVF frequency conversion or vector control frequency conversion). First, the power frequency AC power supply is converted into a DC power source through a rectifier, and then the DC power source is converted into an AC power source whose frequency and voltage can be controlled to supply. electric motor.

The 220V to 380V inverter converts the power frequency AC 220V power supply into a DC power supply through a rectifier (double voltage rectification), and then converts the DC power into a three-phase 380V AC power source whose frequency and voltage can be controlled to supply the motor.

2.1 inverter function

1. It can reduce the impact on the power grid, and it will not cause the problem of excessive peak-to-valley difference.

2. The acceleration function can be controlled to smoothly accelerate according to the needs of the user;

3. The motor and equipment stop mode can be controlled, making the whole equipment and system more secure and the life expectancy will increase accordingly;

4. Control the starting current of the motor, fully reduce the starting current, and reduce the maintenance cost of the motor;

5. It can reduce the wear of mechanical transmission components, thereby reducing procurement costs and improving system stability.

6. Reduced motor starting current, providing a more reliable variable voltage and frequency.

7. Effectively reduce reactive power loss and increase the active power of the grid

8. Optimize the process and change rapidly according to the process. It can also realize the speed change through remote control PLC or other controllers.

Input single phase 220V to output 3 phase 380V VFD/ frequency inverter

Introduction to the principle and characteristics of 220V to 380V inverter
The principle of the frequency converter is to apply the principle of frequency conversion technology and microelectronic technology. The power control equipment of the AC motor is controlled by changing the frequency of the working power of the motor, and the power frequency alternating current with constant voltage and frequency is converted into voltage or frequency. The device of alternating current is called “inverter”.
The waveform outputted by the inverter is an analog sine wave, which is mainly used for three-phase asynchronous motor speed regulation, also called frequency converter. The frequency converter is mainly composed of rectification (AC to DC), filtering, inverter (DC to AC), braking unit, drive unit, and detection unit micro processing unit. The frequency converter mainly adopts the AC-DC-AC mode (VVVF frequency conversion or vector control frequency conversion). First, the power frequency AC power supply is converted into a DC power source through a rectifier, and then the DC power source is converted into an AC power source whose frequency and voltage can be controlled to supply. electric motor.
The 220V to 380V inverter converts the power frequency AC 220V power supply into a DC power supply through a rectifier (double voltage rectification), and then converts the DC power into a three-phase 380V AC power source whose frequency and voltage can be controlled to supply the motor.

2.1 inverter function
1. It can reduce the impact on the power grid, and it will not cause the problem of excessive peak-to-valley difference.
2. The acceleration function can be controlled to smoothly accelerate according to the needs of the user;
3. The motor and equipment stop mode can be controlled, making the whole equipment and system more secure and the life expectancy will increase accordingly;
4. Control the starting current of the motor, fully reduce the starting current, and reduce the maintenance cost of the motor;
5. It can reduce the wear of mechanical transmission components, thereby reducing procurement costs and improving system stability.
6. Reduced motor starting current, providing a more reliable variable voltage and frequency.
7. Effectively reduce reactive power loss and increase the active power of the grid
8. Optimize the process and change rapidly according to the process. It can also realize the speed change through remote control PLC or other controllers.
Third, product features
The single-phase 220V variable three-phase 380V inverter adopts the AC-DC-AC circuit structure, and uses the SPWM modulation control technology to convert the ordinary single-phase 220V electric power into the industrial three-phase 380V electric power. Applicable to three-phase asynchronous motor, the output phase angle is 120°, fully meets the motor use standard, and is suitable for various types of motor loads. The single-phase electric-to-three-phase electric inverter solves the inconvenience caused by three-phase electric power limitation in some areas, and also solves some users’ demands that cannot be applied for three-phase electric power due to site restrictions.

3.1 Technical characteristics:
· Ordinary mains 220V input, eliminating the cumbersome procedures for applying for three-phase electricity and various labor costs and various hidden costs
·The output uses industrial three-phase electricity, but it is economical according to civil single-phase electricity billing.
·The core components are imported devices with stable performance and long service life.
·Safe and reliable, the input single-phase electricity is completely electrically isolated from the output three-phase electricity
·Input wide pressure range design, adapt to the working environment of low commons voltage in all regions
·The output protection function is perfect, and there are various protections such as overvoltage, overload, over temperature, short circuit and over current.

What is the given way of the VFD? What does the frequency given mean?

Frequency given meaning and given way

Changing the output frequency of the frequency converter changes the speed of the motor. To adjust the output frequency of the inverter, the inverter must provide a signal to change the frequency. This signal is called the frequency reference signal. The so-called frequency reference mode is the way to supply the given signal of the inverter.

The inverter frequency setting mode mainly includes: panel operation given, input digital port given, analog signal given, pulse signal given and communication mode given. These given methods have their own advantages and disadvantages and must be selected according to the actual situation. The selection of the given mode is determined by the frequency setting parameter setting of the frequency converter.

Frequency setting mode parameter selection

The frequency reference mode of the inverter can be divided into panel operation reference and external port reference. The external port reference can be divided into digital port reference, analog port reference and communication interface. (Panel operation is also given by communication).

It can also be divided into digital reference and analog reference. The analog reference is divided into voltage reference and current reference.

In general, an ordinary inverter uses only one given mode to output the frequency, but in some cases, the frequency can be output in two different ways. At this time, the output frequency is the superposition of the given frequencies in two ways. .

The selection of the given mode is done with the general port configuration in conjunction with the setting of the frequency setting parameters.

Causes and treatment methods of inverter overcurrent

(1) Overcurrent in operation means that the drag system has an overcurrent during the working process. The reason is mainly from the following aspects: 1 The motor encounters an impact load, or the transmission mechanism is “stuck”, causing a sudden increase in the motor current.

2 The output side of the inverter is short-circuited, such as a short circuit between the output terminals and the motor, or a short circuit inside the motor.

3 The inverter itself is not working properly. For example, two inverter devices of the same bridge arm in the inverter bridge are abnormal during the alternate work. For example, due to the high ambient temperature or the aging of the inverter device itself, the parameters of the inverter device are changed, resulting in one device being turned on during the alternation process, and the other device is still turned off in the future, causing the same The “straight through” of the upper and lower devices of one bridge arm makes the short circuit between the positive and negative terminals of the DC voltage.

(2) Over-current when the speed is increased When the inertia of the load is large and the speed-up time is set too short, it means that during the speed-up process, the working efficiency of the inverter rises too fast, and the synchronous speed of the motor rises rapidly. However, the rotation speed of the motor rotor cannot be kept up due to the large inertia of the load, and as a result, the speed increase current is too large.

(3) Overcurrent in the deceleration When the inertia of the load is large and the deceleration time is set too short, it will cause overcurrent. Because the speed reduction time is too short, the synchronous speed decreases rapidly, and the rotor of the motor maintains a high speed due to the inertia of the load. At this time, the speed at which the rotor winding cuts the magnetic line is too large to generate an overcurrent.

Inverter overcurrent processing method

(1) Tripping at a speed up at start-up, this is a very serious over-current phenomenon. The main check: whether the working machine is stuck; whether there is a short circuit on the load side, check whether there is a short circuit to the ground with a megohmmeter; The module is not damaged; the starting torque of the motor is too small, and the drag system cannot be turned.

(2) Do not trip immediately when starting, but trip during operation, the main check: the speed increase time setting is too short, lengthen the acceleration time; the deceleration time setting is too short, lengthening the deceleration time; torque compensation (U/f ratio The setting is too large, causing too much no-load current at low frequencies: the electronic thermal relay is improperly set, and the operating current is set too small, causing the inverter to malfunction.

VFD Inverter Frequency converter single phase 220v input 3phase 380v output for motor

  • Brand Name: ECOGOO
  • Type: DC/AC Inverters
  • Power :0.75kw ~22kw
  • is_customized: Yes
  • Output Type: Triple
  • Output Frequency: 0~650hz
  • Output Power: 1 – 200KW
  • color: black
  • Communication: RS 485
  • Output Voltage: 3 phase 380v
  • Input Voltage: single phase 220V

Specification:

Product name: General 220V to 380V AC motor frequency inverter VFD

Output frequency:0-400HZ

Input voltage:1 phase 220V

Output voltage:3 phase 380v

Adapter motor:  AC motor

 

+Advantages of  Frequency inverters

We have sophisticated engineers, scientific producing workmanship and management team with rigorous quality control systems , frequency inverter are equipped with advanced features as below:
01 V/F control, vector control  and output torque control;
02 Built-in RS-485 communication interface
03 Compact size, easy to install;
04 With a speed potentiometer and external panel;
05 Built-in synchronous control and proportional synchronization control;
06 16 speed control modest,Can run automatically;
07 Can choice multiple running commands or frequency channel;
08 Can be achieve Part or all of the keys locked(Analog potentiometer unlock);
09 Relay normally open or closed and two high configuration output have 100 kinds of ways optional;
10 6 digital opto-isolated inputs, 100 kinds of ways optional;
11 3 analog input, 1 analog output channel;
12 Having textile pendulum frequency function, It can be widely applications for many kinds of textile
equipment;
13 Built-in user timer / counter;
14 Built-in PID regulation function to facilitate the realization of closed loop control of the temperature,
pressure and tension.
15 At zero speed time,can be achieve output 0-100% of Adjustable torque,With zero speed brake
function,instead foreign inverter application on freight elevator and crane.

 

How to prevent interference of VFD /INVERTER

1According to the basic principles of electromagnetism, the formation of electromagnetic interference must have three elements: electromagnetic interference sources, electromagnetic interference pathways, and systems sensitive to electromagnetic interference. To prevent interference, hardware anti-jamming and software anti-jamming can be used. Among them, hardware anti-jamming is the most basic and most important anti-jamming measure. Generally, it starts from both resistance and attenuation to suppress interference.

Its overall principle is to suppress and eliminate the interference source, cut off the coupling channel to the system, and reduce the system interference signal. The sensitivity. Specific measures can be used in engineering isolation, filtering, shielding, grounding and other methods.

1. Proper grounding
Through the site’s specific investigation, we can see that the site’s grounding situation is not ideal. Correct grounding can be the most effective way to solve the inverter interference by effectively suppressing external interference and reducing the interference of the device itself to the outside world. Specifically, it is to do the following:
(1) The main circuit terminal PE (E, G) of the inverter must be grounded. The grounding can be shared with the motor carried by the inverter, but it cannot share ground with other devices. It must be grounded separately and connected. The location should be as far away as possible from the grounding point of weak equipment. At the same time, the cross-sectional area of ​​the grounding conductor of the inverter shall not be less than 4mm2, and the length shall be controlled within 20m.
(2) In the ground wire of other electromechanical equipment, the protective earthing and working earthing should be separately set up for the grounding pole, and finally imported into the electrical grounding point of the power distribution cabinet. The shield ground of the control signal and the shield ground of the main circuit conductor shall also be separately provided with the ground electrode, and finally be imported into the electrical grounding point of the distribution cabinet.

2. Mask interference sources
Masking interference sources is a very effective way to suppress interference. Normally, the inverter itself is shielded by a steel shell, which can prevent its electromagnetic interference from leaking. However, the output cable of the inverter is preferably shielded by steel pipe, especially when the inverter is controlled by an external signal (outputs 4~20mA signal from the controller). It is required that the control signal line be as short as possible (generally within 20m), and shielded twisted pairs must be used, and completely separated from the main circuit line (AC380) and the control line (AC220V). In addition, shielded twisted pairs, especially pressure signals, are also required for the electronic sensitive equipment circuits in the system. And all signal lines in the system must not be placed in the same pipe or slot in the main circuit and control lines. For the shielding to be effective, the shield must be reliably grounded.

3. Reasonable wiring
specific method:
(1) The power and signal cables of the equipment should be as far away as possible from the input and output cables of the inverter.
(2) The power lines and signal lines of other equipment should be avoided parallel to the input and output lines of the inverter.
If you still cannot work after taking the above measures, continue the following:

4, interference isolation
The so-called interference isolation means that the interference source is isolated from the vulnerable parts of the circuit so that they do not have electrical connections. An isolation transformer is usually used between the power supply and the amplifier circuit such as the controller and the transmitter to avoid conduction interference. The power isolation transformer can use a noise isolation transformer.

5, set the filter in the system line
The function of the equipment filter is to suppress the interference signal from the inverter through the power line to conduct interference to the power supply and the motor. In order to reduce electromagnetic noise and losses, an output filter can be set on the output side of the inverter; to reduce interference with the power supply, an input filter can be set on the input side of the inverter. If there are sensitive electronic devices in the circuit such as controllers and transmitters, a power noise filter can be set on the power line of the device to avoid conducting interference.

6, using reactors
The proportion of the harmonic components with lower frequency in the input current of the inverter (5th harmonic, 7th harmonic, 11th harmonic, 13th harmonic, etc.) is very high, and they may interfere with other In addition to the normal operation of the equipment, because they consume a large amount of reactive power, the power factor of the line is greatly reduced. Series reactors in the input circuit are effective ways to suppress lower harmonic currents.

Therefore, the anti-jamming measures of the inverter mainly include the installation of AC reactors and filters in the incoming line of the inverter, shielded cables for incoming and outgoing cables, shields of all cables, reactors, filters, inverters and motors. The protective ground is commonly grounded, and the grounding point is separated from other grounding points to maintain a sufficient distance. At the same time, the power cables of signal cables and frequency converters should not be arranged in parallel.
In addition, in order to prevent the frequency converter from interfering with the signal and the control loop, it is necessary to use a separate isolated power supply for the controller, the instrument, and the industrial control computer.

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