Frequency inverters for pumps are needed to adjust the power of the motors. As a result, the pressure in the system is maintained at the proper level. High-quality converters can save a lot of electricity. And this should be taken into account. At the same time, a wide variety of pumps can be used. The most common are systems for supplying water to the house. Converters are also required for circulation pumps. Additionally, they can be installed in fountains and aquariums.
Converters Features
A distinctive feature of all converters for pumps is their simplicity. However, they do not need any maintenance and work absolutely automatically. Additionally, it is possible to control them through a personal computer. You can also set individual schedules of the device. Moreover, their efficiency is about 90%. You should also be aware that an expansion tank is not needed for pumps with converters. Thus, the pressure is always maintained at an optimal level.
What characteristics do the converters have?
Important characteristics of the converters are considered input voltage, as well as power. Additionally, the manufacturer always indicates the type of control. Today, there are scalar and vector control devices. The rated current parameter depends on the power of the model. You can also highlight the indicator of the output frequency. Usually it is indicated in the range from 0.1 to 600 Hz. Overload capacity is calculated as a percentage. The degree of protection of the converter housing is indicated by a special marking. The operating temperature of the device by the manufacturer is also mandatory. Among other things, it should highlight the parameter of acceleration time, as well as braking.
Reviews of Danfoss 2800 Converters
The Danfoss frequency converter is quite simple in service, and also operation. In this case, dense installation of equipment is allowed. This is largely due to a reliable cooling system. To control the pressure level in the device, special sensors are provided. Separately, it is worth mentioning the high-quality PID controller. The input voltage of the converter is 220 V, and the power is 0.2 kW.
The output frequency ranges from 0.1 to 600 Hz. The frequency converter is controlled in a vector way. The full acceleration time takes an average of 30 seconds. Degree of protection of the case - class "IP20". The dimensions of this unit are as follows: height - 174 mm, width - 73 mm, and depth - 135 mm. There is a frequency converter Danfoss 2800 about 11 thousand rubles.
Model INVT GD10: specifications and reviews
Many customers have appreciated these frequency converters for pumps for a large number of discrete inputs. Among other things, the presence of a relay output should be highlighted. This converter can be used at temperatures from -10 to +50 degrees. The manufacturer provides a built-in PID controller.
Also, many on the positive side appreciated the multifunctional keyboard. With its help, you can quickly access absolutely all parameters. The input voltage of this device is 220 V. The rated power of the engine is 0.2 kW, and the frequency ranges from 0 to 400 Hz. The rated current parameter is 1.6 A. The degree of protection of the enclosure is of the IP20 class. The overload capacity of this converter is 150%. This model will cost the buyer 12 thousand rubles.
Converter "Vesper E3-8100"
The Vesper E3-8100 frequency converter is capable of boasting its modest size. Among other things, it has special communication adapters that are designed for the network. Also worth noting is the convenient optional remote control. It is equipped with modern software. The circuit boards of the protection device are varnished.
Dense installation of devices by the manufacturer is allowed. The control type in this converter is vector. The rated power of the device is 0.75 kW, and the output voltage is 22 V. The output frequency of the device fluctuates around 200 Hz. The full acceleration time is 30 seconds, and braking is 50 seconds. Degree of protection of the case is established by the IP20 class. The unit can be operated at temperatures from -10 to +50 degrees. There is a frequency converter "Vesper E3-8100" 13 thousand rubles.
INVT GD15 Converter Parameters
Voltage regulation in this converter is automatic. There are five discrete inputs. The PID controller is built-in type. The manufacturer also provided support for all standard programs. The keyboard is multifunctional and provides quick access to the system. We should also mention the EMC filter, which is built into the housing. This single-phase control converter has a scalar type.
The input voltage of the device ranges from 205 to 235 V, and the engine power is 0.4 kW. The output frequency is around 300 Hz. In turn, the rated current indicator is 2.5 A. For 10 seconds. transducer overload capacity is 180%. This model has the following dimensions: height - 140 mm, width - 80 mm, and depth - 134 mm. This device will cost the buyer 14 thousand rubles.
Reviews on the model INVT GD20
These frequency converters for pumps are in great demand and have a good protection system. Analog inputs and outputs are provided by the manufacturer. Also worth noting is the integrated port C485 with support for many standard programs. The brake module is installed built-in type. The EMC filter is available in class C2. The converter protection system quite successfully copes with various kinds of interference.
If necessary, the remote control in the device can be easily disconnected. The dimensions of the converter are quite compact and at the same time its weight is only 1.5 kg. The rated power of the unit is at the level of 0.7 kW, and the frequency fluctuates around 200 Hz. The rated current parameter is 4.2 A. The device can be used at temperatures from -10 to +40 degrees. Separately, it is worth mentioning the good overload capacity. The control type, in turn, is of the scalar type. This frequency converter (market price) costs about 12 thousand rubles.
Customer opinion on the device "Hyundai 700E"
From other devices, this Hyundai frequency converter is characterized by a high-quality PID controller. In this case, the brake module is installed built-in type. The control panel is quite convenient and equipped with a potentiometer to control the speed. This model is suitable not only for pumps, but also for fans. Among other things, it is often installed on various conveyors. The EMC filter is built-in type.
Drives for this model are suitable from different manufacturers, and it is very convenient. The device is installed quite simply and comfortable to maintain. For commissioning, you can use "Flashdrop". The type of control in this model is classified as scalar. The input voltage of the device ranges from 200 to 240 V. In this case, the working power of a single-phase motor is 0.37 kW. Separately, mention should be made of a wide range of output frequencies. The rated current parameter is at 2.4 A, and the overload capacity is 150%. The degree of protection in the converter is set to IP20. The height of this unit is 202 mm, the width is 75 mm, and the depth is 142 mm, with a mass of 1.1 kg. There is a frequency converter Hyundai 700E in a specialized store 12 thousand rubles.
Characteristics of the Schnider AT12 converter
Connecting the Schnyder AT12 frequency converter to the circulation pumps is quite simple. This model differs from other devices in compactness and increased performance. Among other things, the versatility of the device should be noted. Much attention was paid by manufacturers to the security system.
The overload capacity parameter leaves 150%. The engine is installed single-phase, with a power of 0.18 kW. In this case, the rated current parameter is 1.4 A. The full acceleration time takes 20 seconds, and braking time is 55 seconds. The output frequency indicator is on average around 250 Hz. At the same time, it can rise to a maximum of 400 Hz. In turn, the input voltage of the converter is 220 V. This model is worth 14 thousand rubles in the store.
Model "Lovara N3"
Frequency converters for pumps "Lovara N3" have acceptable characteristics, but have one drawback. It is associated with the formation of condensate. This largely depends on unprotected contacts. The possibility of synchronous operation in this model is provided. It should also be noted the versatility of the device. Starting and stopping the engine can be done remotely. Reception of current signals is carried out from 4 to 20 mA.
The ambient temperature should be between 5 and 40 degrees. Depending on the pressure in the system, the engine speed is controlled automatically. The input voltage is at 400 V. The rated power of a three-phase motor is 3 kW. This model will cost the buyer 15 thousand rubles.
FC-051 Converter
The FC-051 frequency converter is actively used for pumps and ventilation systems. This model is distinguished by a high-quality control unit. It should be noted and a good device interface. You can connect this converter to a personal computer. The mechanical seal is locked automatically.
If necessary, the remote control can be easily disconnected. At the same time, the device can be launched remotely from any distance. With increased pressure, the protective system instantly trips and blocks the engine. It also protects the system from various power surges. Indication in this model is provided by LED. At the same time, the control panel has only the most necessary indicators. The noise level of the electric motor is within the normal range. This was largely achieved due to the high-quality variator, which produces a stable frequency at the level of 8 kHz.
To cool the entire converter there is a powerful fan. It is installed at the base of the frame and securely fixed. In this case, the device can be used for a long time and not overheat. Additionally, it should be noted that the tracking system constantly monitors external pressure. This model can be installed on centrifugal pumps. The control sensor withstands an output signal of up to 20 mA. This frequency converter (market price) costs about 16 thousand rubles.