In the article we will talk about ABB frequency converters, which are used to control electric motors. With the help of such devices, you can smoothly change the moment and speed, and most importantly, completely get rid of such a harmful phenomenon as starting current. When converting direct current to alternating current, waves (square, sinusoidal) are created by the inverter. As with any other power source, the frequency converter must have stability and must provide enough current to support the power of the entire system.
Why do we need frequency converters
It is worth noting that ABB frequency converters have gained wide popularity today, they are increasingly used in industry. In production, it is essential to keep drives as small as possible. For this reason, all components of the frequency converters are installed inside the housing in close proximity. Of course, this arrangement of components has its drawbacks - failures of the entire equipment may occur.
Devices are needed to make it easier to start the engine and then control it. The "brains" have a large number of settings that allow you to make fine adjustments. We will talk about this and much more later in the article, and most importantly, we will consider in detail the error codes of ABB frequency converters.
Repair of chastotnikov
As for the repair of chastotnikov, it is often impractical to produce it if the control unit is out of order. But there are models that are built on a modular basis. As a rule, these are devices whose power is 100 kW or more. As a result, the functional diagram is greatly simplified and the resource is increased. The main factor that will ensure the smooth operation of the device is timely diagnostics. It is also worth noting that the device is quite complex, and problems will definitely arise during operation.
Frequency converters are sensitive equipment as the components used have a very high level of complexity. Quite often, problems lie in the software. The more features a device provides, the more likely it is to fail. It is quite difficult and expensive to repair equipment, but you can fix some breakdowns yourself if you know how to handle a soldering iron and screwdrivers.
Bug fixes
The cooling system in the frequency converter plays an important role. In fact, this is the "pain point" of the entire ABB frequency converter. Toto increase the life of the emergency, you need to blow the radiator with compressed air at least once a month. But it will be even better if you blow through the entire case so that there are no traces of dust even on the board. After all, consider the fact that dust conducts static electricity, is able to accumulate it. And static is the worst enemy of semiconductor components. It is also worth noting the fact that chastotniki for three-phase electric motors are afraid of overloads. Therefore, the operation should be carried out as gently and accurately as possible.
IGBT-keys are installed on radiators. These keys directly control the electric motor, they convert direct current to alternating current. But the by-product of work is heat. It can cause the key to overheat and burn out.
Refrigeration and condensers
It is quite common to find electric fans that allow forced cooling of the radiator. It is sometimes necessary to check the performance of coolers in order to ensure the proper level of cooling of the ABB frequency converter. It should be noted that dust accumulated on the blades will cause a decrease in the rotor speed. But the engine power is already low, pollution will lead to the fact that the air flow is not enough for normal cooling.
Another problem, which is relevant not only for chastotnikov, is electrolytic capacitors. They are frequently charged and discharged, resulting in excessive wear and aging. ATas a result, their capacitance decreases, an interpolar breakdown occurs. You can detect this by external signs: the body collapses or swells. The frequency converter is a complex device that needs constant care.
Resistor in system
You can regulate the operation of the converter both with the help of a microcontroller and manually. Quite often, problems arise in a variable resistor, with which the engine speed is controlled. Control can also be carried out using the remote panel of the inverter. In order to change a faulty external resistor, it is enough to switch the adjustment option from the remote panel in the settings. The resistor can be independently replaced with a similar one. Be sure to look at its face value, you can find it in the instructions for a specific device.
Fault alarms
A frequency converter is a complex device controlled by a special module. But it allows you to both manage and diagnose the entire system. Most chastotniks are equipped with an indicator that displays errors if any. It is worth noting that to eliminate most errors, it is enough to check the cables and tighten the terminals. The most common mistake is overloading. It occurs due to the fact that a spark gap appears between the terminal and the wire.
It is also worth noting that the frequency converter for a three-phase electric motor can also be controlled from a remote panel. And if the integrity of the wires or connection is brokenplugs, an error will appear indicating a malfunction.
Table of common mistakes
Next, we will look at the most common ABB frequency converter errors. For a better perception of information, use our table.
| Error code | Transcript |
| 1 | Overload |
| 2 | DC overvoltage |
| 3 | Inverter overtemperature |
| 4 | Inverter output short circuit |
| 5 | Not used |
| 6 | Low DC voltage |
| 7 | AI1 analog input lost |
| 8 | AI2 analog input lost |
| 9 | Motor overheating |
| 10 | Lost communication with control panel |
| 11 | Electric motor start error |
| 12 | Loss of motor speed |
| 13 | Not used |
| 14 | External failure 1 |
| 15 | External breakdown 2 |
| 16 | A ground fault has occurred |
| 17 | Not used |
| 18 | Faulty temperature control system |
| 19 | Error in optical isolation |
| 20 | Built-in power supply error |
| 21 | Error in current measurement circuit |
| 22 | Phase error |
| 23 | Faulty encoder |
| 24 | Rotor overspeed |
| 25 | Not used |
| 26 | Presence of an internal error in the configuration block |
| 27 | Error in internal configuration file |
| 28 | Communication error serial 1 com |
| 29 | Error reading fieldbus configuration file |
| 30, 31, 32, 33, | Fieldbus failure |
| 34 | Electric motor failure |
| 35 | Faulty power circuit |
| 36 | Software error |
| 37 | Inverter board overheating |
| 38 | Invalid parameters 3701, 3703 |
| 101-299 | System errors |
Electric motor does not start
A fairly common fault with ABB frequency converters is an error that the motor does not start. There are only two reasons:
- Motor failed.
- The control system is damaged. In this case, only disassembling the converter and replacing the control board will help.
In the event that you cannot repair it yourself, you should contact the specialists. But most of the engineers, by the way, perform modular repairs - they replace the entire unit at once, they are not puzzled by the search for a capacitor that has failed. But sometimes a modular repair is much more expensive than buying a new ABB frequency converter.
