A frequency converter is a device that regulates the operation of a pump without human intervention. It is included in most models even at the construction stage. Instead of converters, microprocessors are built into complex types of pumps. In simpler models where the converter is not available, there is a need for its purchase and installation.
Device purpose
The inverter regulates the operation of the pumping system better than the relay, performing the functionality of automation that regulates the working process.
- Protects the pump motor from wear and tear, reducing power supply and speed.
- Increases pump life by eliminating power surges.
- It does not allow the formation of pressure in pipes more than standard.
- Saves electricity.
The frequency converter looks like a small box, equipped with a measuring sensor, circuit boards and an inverter leveling the voltage level.
The principle of operation and device
An inverter converter is a complex electrical device. The kit includes:
- pressure sensor - determines the main indicators of the system;
- logical converter - compares the information of the pressure sensor with the input data;
- Control block.
When the pressure in the pipes changes, the water supply decreases. The sensor determines that the parameters of the pressure level in the hydraulic tank are lower than set, and sends a signal to the logic converter that starts the motor. The set of revolutions of the motor runs smoothly, which gives the system the opportunity to reduce hydraulic loads. In modern models of frequency converters, it is possible to set the start time of the motor from 5 to 30 seconds.
When the motor starts, the pressure sensor constantly sends information about the pressure in the pipes to the logic converter. When the indicator reaches the required level, the control unit suspends the set of revolutions of the motor, while continuing to maintain the specified parameters. When a water intake point using a pump with an inverter pumps out increased volumes of water, the inverter will increase speed, which will lead to increased productivity and increased water pressure in the pipes.
Criterias of choice
As a rule, pump manufacturers specify compatible transducers in the instructions. If there is no instruction, you can choose the right inverter yourself, focusing on the following parameters:
- electric drive power to which the converter will be connected;
- voltage at the entry point, which determines the inverter’s operability, it is necessary to take into account the possibility of power surges in the home network, as its decrease will lead to the device stopping, and the increase will lead to breakage; the number of phases of the inverter motor is also taken into account;
- fluctuation levels of control frequencies - in pump systems designed for use in wells, the correct level of frequency range from 200 to 600 Hz .;
- the number of input and output control points is proportional to the number of inverter operating modes, a large number allows you to perform several operations simultaneously;
- system control location - for pumps working with a well, the most convenient control from home.
In the absence of an inverter suitable for all parameters, it is necessary to reduce the search criteria, paying particular attention to the main factor - the current that the pump motor consumes, and select the device from it.
Mounting Features
The converter is installed in a cabinet where all control of the pump systems is concentrated, or in another place with the mandatory observance of the requirements ensuring the functioning of the inverter. For a quality installation, the following conditions must be observed:
- the inverter must be installed in well-ventilated places;
- the temperature range in the room should be from 10 to 45 degrees and humidity not more than 90%;
- Do not allow water to enter the device;
- Do not install the converter in places with increased fire hazard;
- exclude the possibility of direct sunlight;
- install the converter on a solid, rigid base, not subject to vibration;
- Do not install the inverter in places of electromagnetic radiation.
An important nuance is the ratio of the installation location of the device to a point above sea level. The higher the installation level, the greater the inverter power.
Advantages and disadvantages
The connection scheme with a frequency converter has its advantages:
- maintaining a constant pressure in the system, regardless of the amount of water consumed;
- protection of the water main from water hammer, as a result, possible exclusion of the accumulator from the system;
- the use of the converter allows the engine to work in a gentle mode;
- energy saving up to 50%;
- ease of use and ease of use.
Chastotnik works by replacing some automatic processes. The cost of the device is high, but the cost of purchase and use pays off for a year.
The disadvantages include:
- the high cost of the inverter;
- the need to connect and configure with the help of specialists.
The correct use of automation makes the process of using the well for industrial and private needs convenient and simple. In order for the pumping equipment to serve for a long time, and operation was simple, you must follow the instructions carefully.
