Resanta 220 saipa diagram - inverter diagram RESANTA SAIPA-220

Resanta - 220 inverter repair.

Resanta - 220.

Repair of welding inverters

» data-medium-file=»https://i2.wp.com/trigenn.ru/wp-content/uploads/2016/07/RESANTA_220-e1469014105559.jpg?fit=291%2C300&ssl=1″ data-large- file=”https://i2.wp.com/trigenn.ru/wp-content/uploads/2016/07/RESANTA_220-e1469014105559.jpg?fit=993%2C1024&ssl=1″ >We received a welding inverter for service Resanta - 220. The device did not turn on. We open the body of the device and look through it. We check the input transistors using the high control circuit, we also check the diodes, resistances, and capacitors connected to this circuit. In our case, the device, in the power circuit, turned out to be all right. Let's go further, go to the control circuit of the board, and also check all the details. In order, and so on, I get to diode D03, which was open, and capacitor C06 showed a capacitance leak. After replacing the above parts. We connected the device to the connectors, plug it into the network and check that the device is working.

Radio circuits. — Resanta SAI-220

Welding inverter circuits

General characteristics

In the attachment to this page you will find diagrams of welding inverters Resanta SAI-220, SAI-220K, SAI-220PN, SAIPA-220, taken from various sources.

The archives contain diagrams of the modules used in this product: SAI-220 ENDU180_V1, ENDU180J_V1, ENDU180J_V2, ENDU180J_V3, ENDU180J-W SAI-220K ENDU180SD, ENDU180SD-W

Resanta SAI-220 inverter circuits

Below are the electrical diagrams of the SAI-220 inverter welding machine. For ease of study, it is better to download the images to your computer in order to easily enlarge them to the desired size, since the sizes of some circuits will be too large for small monitors.

Electrical diagram No. 1 (click to enlarge)

Scheme No. 2

Scheme No. 3

Scheme No. 4

Advantages of using an inverter of this model

As with many models of modern inverter devices, this welding machine has a number of options that ensure high quality welded joints. Thanks to such options, a very important task is also solved - the influence of the welder’s qualifications on the quality of the joint being formed is minimized.

These options, which are familiar to many welders, include:

• automatic shutdown of the device if the elements of the circuit diagram overheat (this option is possible due to the presence of a special temperature sensor);
• “Hot start” is an option that ensures quick ignition of the welding arc due to the automatic supply of increased current to it;
• “Anti-sticking” is a function that automatically turns off the welding current at the moment when the tip of the electrode is welded to the surface of the parts;
• “Arc force” is an option that automatically increases the welding current when the arc length shortens and makes it possible to prevent sticking of the electrode.

The power of the device allows welding seams with electrodes up to 5 mm, but the current consumption is about 30 A

The welding inverter under consideration provides enhanced protection of the elements of the circuit diagram from overheating. This protection is provided by several design features:

• the presence of two fans at once, improving the cooling process of the device;
• high resistance of electronic circuits to overheating;
• the use of a temperature sensor that automatically turns off the equipment when it overheats.

The listed options are equally useful for both beginners and experienced welders, as they allow you to avoid many inverter malfunctions associated with overheating of the electronic filling, and also significantly expand the functionality and scope of use of the device.

The strong handle and fastened belt add convenience both when carrying the unit and during operation.

The indisputable advantages of the inverter of this model also include the following.

• The exceptional mobility of the inverter is ensured not only by its light weight, but also by the presence of a convenient shoulder strap, thanks to which the device can be carried to any place where welding needs to be carried out.
• The housing and other elements of the inverter are highly resistant to mechanical damage, which can be caused by impacts, falling or overturning of the equipment.
• The welding machine of this model is exceptionally compact (130x310x190 mm) and mobile.
• If desired, you can order an inverter package that includes a special suitcase with a handle, in which it is convenient to store and transport not only the device itself, but also all the necessary cables.
• The design of the inverter allows for its efficient operation even at fairly low ambient temperatures (down to –20). However, when welding at low temperatures, you should strictly monitor the heating and cooling conditions of the equipment.

Many specialists and organizations involved in sales of welding equipment, judging by the reviews, complain that among the inverters of the model in question there is a fairly large percentage of defects. Thus, there is data according to which out of 10 Resanta model 202 welding machines, 1–2 are not completed until the end of the warranty period and fail.

Faulty parts causing overload

If you encounter a malfunction such as overheating of the inverter, you can fix it yourself or with the help of service specialists. Very often, overheating is associated with poor contacts between the elements of the electronic circuit and this problem can be eliminated by revising them. The situation is much more complicated when the electronic components of the inverter fail. In some cases, the cost of replacing such components can be comparable to the price of a new device.

The big disadvantage of inverters of this model is that the actual values ​​of the welding current that they generate may diverge from the passport data by 15–20%. In most cases, this does not reduce the efficiency of using welding equipment, but nevertheless impairs its functionality.

Problems listed in the instructions for the welding machine

The Resanta model 202 inverter is not very effective when working with parts whose thickness exceeds 10 mm. In such cases (even using electrodes with a diameter of 5 mm), only surface melting of the metal is possible, and effective heating of the parts being connected does not occur over their entire thickness.

In general, reviews of the inverter of this model and the opinions of experienced specialists indicate that such a device is convenient and reliable in operation, and allows you to obtain high-quality and neat welded joints.

The ease of operation and maintenance of the device makes it easy to learn how to operate it, for which you can even use special videos. Of course, watching a video is best supported by theoretical knowledge that will help you thoroughly study the characteristics and capabilities of the equipment.

Disadvantages of the Resanta model 220 inverter

Many specialists and organizations involved in sales of welding equipment, judging by the reviews, complain that among the inverters of the model in question there is a fairly large percentage of defects. Thus, there is data according to which out of 10 Resanta model 202 welding machines, 1–2 are not completed until the end of the warranty period and fail.

Faulty parts causing overload

If you encounter a malfunction such as overheating of the inverter, you can fix it yourself or with the help of service specialists. Very often, overheating is associated with poor contacts between the elements of the electronic circuit and this problem can be eliminated by revising them. The situation is much more complicated when the electronic components of the inverter fail. In some cases, the cost of replacing such components can be comparable to the price of a new device.

The big disadvantage of inverters of this model is that the actual values ​​of the welding current that they generate may diverge from the passport data by 15–20%. In most cases, this does not reduce the efficiency of using welding equipment, but nevertheless impairs its functionality.

Problems listed in the instructions for the welding machine

The Resanta model 202 inverter is not very effective when working with parts whose thickness exceeds 10 mm. In such cases (even using electrodes with a diameter of 5 mm), only surface melting of the metal is possible, and effective heating of the parts being connected does not occur over their entire thickness.

In general, reviews of the inverter of this model and the opinions of experienced specialists indicate that such a device is convenient and reliable in operation, and allows you to obtain high-quality and neat welded joints.

The ease of operation and maintenance of the device makes it easy to learn how to operate it, for which you can even use special videos. Of course, watching a video is best supported by theoretical knowledge that will help you thoroughly study the characteristics and capabilities of the equipment.

Selecting the type of protection

The modern market for electrical appliances offers two types of voltage stabilizers: stationary (for the whole house) and mobile (serves one or more electrical appliances). Also, depending on operating conditions, stationary units are divided into single-phase and three-phase. Installing a voltage stabilizer has certain differences: connecting to 220 V or 380 V.

In a country house or apartment, as a rule, a single-phase model is installed, which protects the entire network from overloads.

Reviews of the welding inverter Resanta SAI 220

Positive feedback from working with the SAI 220 inverter - convenience and simplicity.

The main users of Resanta Sai 220 do not have much experience in welding. This device is quite suitable for them, because it can be turned on and used literally after leaving the store, having first read the operating instructions. The inverter is easy to transport and has small dimensions - 310x130x190(195) mm, so it fits in a household bag or backpack.

Design features allow you to maintain a stable arc with constant parameters. This makes the weld neater and stronger, since it is formed from a continuously formed strip of melting metal and is a monolith.

When welding with machines that do not have the functions inherent in the Resant inverter - maintaining the arc due to a higher current, a hot start with an abrupt increase in current when touching the metal and anti-sticking (automatic reduction of the current, due to which the electrode easily comes off the surface being welded) - welding can turn into long attempts to light an arc and tear off the stuck electrode. The resulting weld is usually not of the highest quality and is far from monolithic.

The advantages of this inverter also include:

• resistance to mechanical stress (shocks, falls from a height of up to one meter) without loss of performance is typical for an average device of this type;
• ability to work down to -20 degrees, observing the temperature regime of heating and cooling;
• 2 cooling system fans that improve airflow inside the case;
• resistance to overheating when fans fail. Practical tests show that the Resanta Sai 220 switches off only after expending two 5 mm electrodes, if the cooling system does not work;
• reasonable price (from 260 to 290 $), which depends on the store and region. Ordering a device from a direct supplier is usually cheaper, but it is very difficult to find less than $260. It’s also not worth overpaying more than $290, it’s better to look further - there will definitely be options.

Scheme

Beginners may think that we only need one diagram of the Resanta 220 inverter welding machine from the SAI line. But it is not so. Below we have placed four diagrams at once that will help you perform simple repairs or construct a similar inverter with your own hands.

Read also: How to choose a compressor for a sandblasting machine

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We do not recommend performing soldering work unless you have sufficient experience and at least basic knowledge of electrical engineering.

Each electrical diagram is available in high resolution, just open the images in new tabs.

The lineup

The Resanta range of inverters includes a large number of different devices that differ in power and purpose. Let's look at several of the company's most popular welding inverters.

Resanta SAI 220

The welding inverter Resanta SAI 220 is a powerful unit for a professional workshop. It is popular among companies engaged in casting and processing of metal of various grades and thicknesses. The maximum welding current is 220 A, which allows you to work with an electrode with a diameter of 5 mm.

Need to know: the operating power of the device is 6.6 kW. Therefore, a fixed home network may not be able to withstand such a load.

There is the possibility of smoothly adjusting the current from 10 to 220 A. Continuous welding is allowed, with a one-time load of 70% for 7 minutes. The cost in retail stores can reach 9,000 rubles.

Resanta SAI 190

Resanta SAI 190 is a compact welding inverter for home and production workshop. Designed for manual arc welding with a coated electrode with a diameter of up to 5 mm. The maximum thickness of the workpiece is 8 mm. Operating power is 5.5 kW. This is a fairly powerful unit, so it is very often used in the foundry industry.

Capable of working at reduced voltage, up to 160 V. It is possible to smoothly adjust the welding current from 10 to 190 A. Built-in indicators allow you to control the work process and protect against overload. It has built-in functions: anti-stick electrode, hot start, and tunnel cooling. The cost varies from 5800 to 7000 rubles.

Resanta SAI 250

Welding inverter Resanta SAI 250 is a reliable and heavy-duty unit for manual arc welding of the MMA type, for work you can use a coated electrode with a diameter of 1 to 6 mm. The power of the device is 7.7 kW, which allows for smooth adjustment of the welding current from 10 to 250 A.

Inverter technology guarantees a stable arc and the highest quality seam, as well as maintaining functionality when the network drops to 160 V. Therefore, this welder is suitable for both experienced and home craftsmen. Equipped with an automatic shutdown function in case of overheating or short circuit. The cost of the unit is 9400.

Resanta SAI 160

The welding inverter Resanta SAI 160 belongs to the household line. Designed for manual welding with a 1.5-4 mm electrode. It has a built-in welding current regulator from 10 to 160 A, with a stable arc voltage of 26 V. Ideal for a stationary 220 V network, weight is 4.5 kg.

Equipped with a forced cooling fan, which prevents overheating and also reduces breaks between approaches to a minimum. The absence of a bulky transformer makes it lightweight, virtually silent and compact. The market value of the unit is 5800-6000 rubles.

Complete set of inverter devices

The basic equipment of the units is standard and includes:

• Ground clamp cable;
• Electrode holder;
• Transport strap;
• Instructions and box.

Some models may be supplied in a plastic case with space for a welding helmet.

Checking PN

Since the current characteristics of all inverters are overestimated, the voltage limit indicated on the inverter nameplates is also not true. To imagine what load duration the sources have, let’s calculate their approximate operating mode. To do this, all devices will be loaded with their real maximum current and placed in a heat chamber (at a temperature of 40 degrees). Based on the time that each source can stay in the thermal circuit without turning off, we will draw conclusions about the real PN.

When coming to the store to buy a new welding inverter, a professional welder pays attention to the continuous load current, which is indicated on the nameplate. The numbers indicated there indicate the threshold current values ​​that the welder can set at the source without fear of the machine shutting down due to overheating, regardless of operating time. Incorrect data indicated in the PN100% column can mislead the welder and lead to forced downtime.

Test results obtained in a thermal chamber

Causes of breakdowns of the Resanta welding inverter

Here are just the main signs by which you can determine that the welding inverter is faulty and requires repair:

• The electrode sticks;
• The arc burns unstable or does not burn at all;
• The device overheats all the time, even if it does not work constantly;
• The welding inverter does not turn on.

The reasons for these malfunctions of the Resanta device may be as follows:

— The electrode sticks due to low voltage or the use of a long extension cord whose conductor cross-section is less than 2.5 mm. The connectors may be burnt or the power cables may have poor contact.

— The arc may burn unstably due to incorrect welding current adjustments. Also, the reasons for this may well be inappropriate welding electrodes or their diameter. A complete lack of arc is most often caused by a broken ground cable or overheating of the inverter. Often the printed circuit board on which capacitors swell or several parts fail at once also fails.

— The Resanta inverter overheats in case of prolonged operation without interruption or as a result of a cooling fan failure. Overheating of the inverter is also possible as a result of the accumulation of a thick layer of dust on the printed circuit board.

— If the inverter does not respond at all to being turned on, then most likely there is no power, or the voltage does not correspond to the rated value. Often the reasons are caused by a cable breakdown or a malfunction of the sockets/switches to which the inverter is connected. It may also be a problem with the power extension cord.

Scope and technical characteristics

If this does not happen, then you need to check the fqp4n90c transistor.

The optimal electrode diameter for welding is mm. Since the brush is a contact, and a rather poor one at that, it gets hot.

The Resanta SAI model is designed for welding using coated electrodes. You need to be able to operate a multimeter, an oscilloscope, not to mention voltmeters and other measuring equipment.

You need to check the adjustable pads and all relays according to the diagram. Also in the same circuit, 10 Ohm resistors burn out, this is a consequence of the breakdown of the transistors. This indicates a breakdown of the microcircuit responsible for the operation of the cooling system. Reliable, I accidentally dropped mine several times, nothing, it works. Provides for testing the performance of transistors, power diodes, resistors, pulse transformers, zener diodes and other elements that make up circuit diagrams. And it powers all the main blocks of the welding inverter. They simplify and speed up your work.

Why do you need a diagram?

In a general sense, a diagram is a way of simplifying the representation of an electronic device. When talking about welding machines, the term “circuit diagram” is usually used. The circuit diagram shows the location and interconnection of all the electronic components of the inverter. You may need the diagrams to repair or assemble your device at home.

The electrical circuit of an inverter welding machine contains complete information not only about the relationship of all components, but also the names of these same components. Using the circuit, you can find any component in the inverter itself and, for example, replace it with a new one. Simply put, a diagram is a list of all the electronic components of a welding inverter and a depiction of their interconnection.

Welding currents and shape of the current-voltage characteristic

Let's consider the current-voltage characteristics of the devices and draw conclusions about their operating properties.

To summarize, we can say that none of the test participants passed the test. You can calculate for yourself how many amperes of rated current each inverter does not deliver. That is, the price of welding power supplies includes clean Chinese air, which amounts to 25 to 35% of the price of the devices. As for the shape of the current-voltage characteristic, it can be assumed that the ignition process and the stability of the arc must be at an acceptable level.

Main types of repair work for Resanta welding inverters

Repairs to the following units and components of the Resanta welding machine should only be carried out by a service center specialist.

It is in the service center that they will help eliminate complex inverter malfunctions and make replacements:

• Printed circuit board and transformer;
• Fan;
• Diode rectifier;
• Swollen capacitors;
• IMS of inverter module and control module.

In order not to frequently repair the Resanta welding machine, it is enough to follow the recommendations and operating rules specified by the manufacturer. Try not to overheat the inverter and also give it time to cool down.

Clean the fan regularly and ensure that the ventilation openings are always clean and open. Remember that most malfunctions of the internal components of inverters occur due to overheating of parts on the board.

SAI 160

Belongs to the budget category. A primer for a beginner in welding. However, it will allow you to cook, say, a greenhouse in the garden. If your requests for welded configurations are also unpretentious, this is what you need!

What you can do with a 160 Ampere welding current on hand Apply a patch to a barrel-type container or eliminate a leak in a garden water supply.

Start building a fence on your property. Weld a simple, but with a twist gate. This is enough for a standard “kit” for a country welder.

Getting started is easy. Socket + 220 volts. The operating principle is the same for all AIS models. The power is small, so you don’t expect to spend a lot on electricity. For an electrode, a diameter of 2 to 3 mm is sufficient.

The budget option also has anti-stick and hot start functions. It will greatly simplify the work of novice craftsmen. The SAI160 kit is similar to other inverters.

We are talking about welding cables, holder and ground. A mask will be a separate purchase. In this case there is an advantage. In the retail chain, you can choose the right size for yourself and take into account the specifics of the welding that you have to do.

The kit may only include a modest mask-shield, the eyelid of which may turn out to be unpleasantly short. The manufacturer will not think about the above-mentioned nuances. When buying SAI 160, take care of the cables. You can hardly expect super quality from complete ones. Below is a diagram of the device.

Advantages and disadvantages

The pros and cons of the Resanta SAI 220 device are the same as all other inverters in this price category. But let's start with the good.

The first thing you will like is that it works from a regular 220V household outlet. You don't need any special type of connection, just plug the plug into the socket and you're good to go. The main thing is that your household electrical networks operate without strong power fluctuations.

Another plus is the use of modern IGBT-type transistors in the design of this device. Thanks to them, it was possible to introduce additional functions and reduce the dimensions of the SAI-200. You can hang the inverter on your shoulder using the included strap and conveniently transport it or cook it in hard-to-reach places.

Additional features are another big plus. The device is protected from overheating and is equipped with anti-stick and hot start functions. They simplify your work and make welding more productive.

In general, the device is well built. The case is durable, made of metal. And to use this inverter, it is enough to have basic theoretical knowledge. It’s not for nothing that this model is often used specifically for studying. It is easy to use, all adjustments are intuitive.

Now about the disadvantages. First of all, devices like SAI-220 are not recommended for professional welding work. Of course, a master of his craft can make decent seams with a Chinese inverter for 2,000 rubles, but a home craftsman or a practicing student is unlikely to have the same skills.

So, if you want to develop your welding skills, look towards more powerful and technologically advanced welding machines. They will give you more opportunities and unlock your potential.

Scheme of inverter welding machine Resanta 220

RESANTA SAI-220 inverter circuit

A complete diagram for the Resanta SAI-220 welding machine is provided. The basis is the UC3842BN microcircuit and more powerful bipolar transistors with an insulated gate FQP4N90C. The device is an inverter type, designed for manual electric arc welding with direct current wire in a protective gas environment - carbon dioxide, argon or a mixture thereof. The inverter welding machine is designed for manual electric arc welding with a direct current coated electrode. The operating principle is based on converting AC mains voltage with a frequency of 50 Hz into DC, and then converting DC voltage into high-frequency AC. Resanta SAI-220PN is made in a metal case with an opening wall. Pulse width modulation is used to regulate the welding current. This inverter device has overheating protection and is equipped with a forced ventilation system.

Characteristics of the inverter RESANTA SAI-220

Operating voltage range, V 220 (+10%;-30%) Maximum current consumption, A 30 Open circuit voltage, V 80 Arc voltage, V 28 Welding current control range, A 10-220 Load duration, % 70% 220A

Description of devices and diagrams

Next, we will talk about four popular Chinese welding inverters from the Resanta brand. It is Chinese, and not Latvian, as many people confuse.

Resanta SAI 220

The Resanta SAI 220 machine is one of the most popular welding inverters from the entire SAI line. At the same time, one of the most expensive among its “brothers”. The only more expensive model is the SAI 250PROF, which we will talk about later.

The Resanta SAI220 model is designed for welding using coated electrodes. The device is not suitable for professional use, only for domestic use. However, this welding inverter successfully copes with simple repairs in the country house or garage. It is also suitable for learning the basics of welding.

Now about the characteristics. Resanta SAI 220 produces up to 220 Amps of welding current, which is more than enough for a beginner or a practicing welder. By the way, looking at the name of the devices in the SAI line, it’s easy to guess what current strength a particular model has