In some areas, it is impossible to do without automation, especially if the same actions are performed throughout the entire time. You cannot build a smart home without using special electrical controllers that will be responsible for some processes. Most of the problems can be solved by a programmable relay (intelligent), using it, you can simplify routine actions.
Dozens of types of such equipment are sold in stores. Each will differ not only in technical characteristics, but also in manufacturers. In order not to get confused in choosing a device, the editors of the site "bestx.htgetrid.com/en/" have prepared for you a rating of the best programmable relays for 2020.
Content
general information
A smart relay is one of the subtypes of programmable logic controllers (PLC for short). Using this device, a person simplifies the process of controlling electrical devices, which increases their reliability and durability. Since there is no constant mechanical impact and errors on the part of the user.
To set the program for the smart relay, just use the front panel, where the necessary buttons are present. The progress control can be monitored via a small display. But this option is typical only for small production programs, when a person needs to do more, then this will require a connection to a personal computer. Next, conditions and solutions are introduced using special programming languages that are used in a particular model.
To install software from a computer to a smart relay, you need to use a special connector. Some manufacturers install an RS-232 interface, others prefer RS-485. The task of the connection is to provide communication with a higher-level automated control system. To expand the tasks, some types of programmable relay make it possible to increase communications using expansion modules (for example, OWEN PRM).
How does a smart relay work?
The main difference between programmable devices and PLCs is the amount of RAM and program memory. Due to the fact that there is not so much of it in the relay, a person can forget about complex mathematical calculations and performing difficult operations, since the equipment is not designed for this. Some differences lie in the number of input and output channels. They are not enough for the device to work in a large area, most often the application is limited to automating a small device and controlling the switching on and off of lighting. There are models on the market that are used not only for small needs, but are also installed in the housing and communal services system, as well as in some local circuits.
A distinctive feature of such equipment is its use in small household systems. Programming can be done in two languages: FBD or LD. The first is the language of functioning of block diagrams, and the second is the universal language of relay logic, which is found in many similar devices.The main requirement for such a system is compliance with the global standards IEC 61131-3.
The software part of such devices has a pleasant and friendly interface that will not raise questions even from inexperienced users. This makes it possible to learn the basics of working with such a system in a few hours, quickly check the correctness of the written program, and in addition, it opens up the opportunity to change the conditions of the problem in real time. This solution allows for on-site debugging rather than taking the product to a specialized office to troubleshoot.
The design of such a device does not differ in any unusualness; it is a standard monoblock relay, in the case of which all the necessary units and components are located. For example, there is a power supply unit (it is necessary to turn on the equipment, most often it has a small power), a microcircuit for controlling electronic devices, channels for receiving and transmitting the received information, as well as terminals necessary for connecting to the executive device. The dimensions of such a unit are small, which makes it possible to place it on a DIN rail, which makes the operation of the device convenient and accessible for every person.
An example of using a similar product
Shopping centers are purchased with such a device to provide automatic control of escalators. This saves electrical energy and also makes the equipment independent of humans. All you need to do is set the on and off times. Some go further and use special sensors that respond to a person and activate a mechanism.
Ventilation also did not go unnoticed; it can be difficult and inconvenient to constantly interfere with its system. The programmable relay solves this problem. Here, a person is able to set the conditions under which ventilation will operate every 30 minutes. The same as in the previous version, if you use a special sensor (which monitors the amount of CO2 in the air), the program will automatically control the process.
The programmable relay can control the automatic transfer switch. In addition, turn off or turn on some consumers, control a diesel generator set, etc. The capabilities of the device are limited only by memory. Otherwise, it can be used in almost any field of activity.
Description of the action of a simple program
Knowing the technical aspects is one thing, but you also need to consider the software part, which is equally important. For example, when a person needs to adjust the control of the supply and mixing of liquid, then the operations must be performed in a specific way. It is important to take into account that the programming language depends on a specific model, somewhere FBD is widespread, and somewhere LD.
The problem conditions are described as follows:
- To begin with, a specific value of the liquid is fed into the vertical container (the conditional height of the container is 7 meters);
- Upon reaching the level of 2.8 meters, the process of feeding from the first tank - with a certain liquid N, stops;
- The valve opens and a second fluid is supplied from the pipes - M, which fills the remaining space (4.2 meters);
- After reaching the set level, the valve closes and the stirrer motor starts to operate. The specified time depends on the person and can be either a minute or half an hour or an hour.
- As soon as the last seconds have turned to zero, the engine stops working and the drain valve opens.
The terms are simple and straightforward, but this is only for humans. To make them clear to the controller, you need to convert them to special code. To do this, you should hire a specialist or try to figure it out yourself.
Benefits
Although programmable relays have minor drawbacks, it is impossible to imagine modern production without them, especially where a programmable logic controller is actively used.But besides this, such a device can be useful in the home area, especially if a person wants to build a fully automated home.
The main advantage of this device over a PLC is the cost of further modernization, which is several times lower. Also, the equipment supports the ability to automate not only manual, but robotic process. The second advantage is that the user does not need to have special knowledge in programming languages; it is enough to spend some time with the equipment and he will understand how it works. If the owner does not want to understand for a long time, then there is the possibility of using standard programs.
Rating of the best programmable relays of foreign production
Schneider Electric Zelio Logic
The device is available in two versions: monoblock or modular, which significantly expands the scope of its application. The popular FBD language is used for programming tasks, but LADDER is also allowed. The scope of application of such a device is different, it can be installed in a pumping system, control the movement of escalators, control lighting, etc. But besides this, some users prefer to operate the product in the ACS.
The average cost is 14,400 rubles.
Advantages:
- Multifunctionality;
- Sold in two versions;
- Simple to use;
- Wide range of applications.
Disadvantages:
- Not found.
OMRON ZEN-10C1DR-D-V2
Compact model designed for installation on a DIN rail. Suitable for local automation of some equipment. Programming is done by connecting a laptop or computer to the system. But if a person is faced with a simple task, then he is able to complete it using a small display. The degree of protection is IP20, which is the standard for such devices. For more convenience, there is a timer.
The average price is 13,000 rubles.
Advantages:
- Efficiency;
- Extension device supported;
- Display;
- With a timer.
Disadvantages:
- Not found.
ABB CL-LSR.C12AC2 100-240VAC 8I / 4O
The product of the Italian manufacturer, which has good functionality and high-quality element base. It can be used for rail mounting. The relay is capable of controlling small local processes, for example, organizing automatic watering of plants or turning off / on various consumers. For greater convenience of control and programming, there is a display. Protection class - IP20.
The average price is 34,700 rubles.
Advantages:
- Convenient management;
- Wide display;
- Large area of application;
- Simple monitoring of the current state.
Disadvantages:
- Price.
DigiTOP PB-2c
A simple time relay that is installed on the street, in a house or apartment. The relay does not have a wide range of uses. It is suitable for organizing lighting or starting a pump. A person just needs to set a period of time when it is necessary to turn on and off electrical equipment. Such a system will simplify everyday tasks. The operating mode is daily.
The average price is 4 380 rubles.
Advantages:
- Reliability;
- Performance;
- Durability;
- Low cost.
Disadvantages:
- Limited scope of activity.
Rating of the best domestic smart relays
ARIES PR110-24.8D.4R
Popular Russian equipment used in factories and large country houses. The product will be able to build a simple automated system of small devices. In addition, owners can use the equipment to be installed in the protection system. Power is supplied from 24 V, but it is also possible to connect to 220 V. For easier operation, a timer is provided. If desired, a person can adjust the time on the display.
Using this device, you can create dozens of different algorithms that will simplify routine operations. The relay is placed on a DIN rail. Dimensions are small, so the equipment will not take up much space.
The average price is 5,040 rubles.
Advantages:
- Long service life;
- Wide area of use;
- Compact body;
- Simple controls;
- Real time clock.
Disadvantages:
- Not found.
Novatek-Electro OM-163
A simple device designed to regulate AC voltage power. Connection type - screw connection. The degree of protection is IP10, therefore installation and operation in dusty rooms is not allowed, as dust can penetrate into the housing and cause overheating of the elements. The rated voltage with which the product is capable of operating is 450 V. It turns on in one second. The nominal switching current is 63 A.
The average price is 2,050 rubles.
Advantages:
- Durability;
- Nice body;
- Excellent voltage regulation;
- Low price;
- Compactness.
Disadvantages:
- Protection degree IP10
BAZIS-12
If a person is looking for a reliable programmable relay designed only for solving industrial problems, then this is the right solution. The product is capable of processing signals that come from a dozen different sensors. In addition, a warning system is provided in the event of a malfunction.
Operational safety is confirmed by the documents of "General rules of explosion safety". This makes the product suitable for use in various automatic protection systems. The product has such useful functions as:
- Receiving and transmitting signals from sensors;
- Self-diagnosis;
- Analysis of the state of input signals;
- Management of various electrical systems.
This is not a complete list of available options, but the main one. Such equipment is used in many enterprises, as it ensures the reliability and safety of various processes.
The cost of the goods is specified when ordering.
Advantages:
- High-quality element base;
- Dozens of functionalities;
- Self-diagnosis;
- Suitable option for large enterprises;
- Reliable alerting system.
Disadvantages:
- Not found.
EKF PROxima PRO-Relay 10 I / O
A good device that will simplify the management of electrical equipment at times and will automate most of the local processes. The product is used in large production lines, but is also suitable for domestic use. A wide informative display opens up the possibility of simple and quick adjustment of operations, and also allows you to monitor the current state. Programming is carried out using standard relay language. Work with 260 blocks is supported.
The equipment case is made of 5 points, which allows it to be installed in almost any room, the main thing is that there is a high-quality switchboard. Operations are configured using a special USB cable, which greatly simplifies operation, since a person does not have to look for outdated interfaces.
The average price is 4,000 rubles.
Advantages:
- Cost;
- Wide display;
- Reliable fastening;
- Convenient programming language;
- Password protection;
- Functionality.
Disadvantages:
- Not found.
Finally
When it is necessary to automate local systems, it is better to buy specialized equipment for this, which will cope with its task by 5 points. Trying to do something without knowledge and practical experience is prohibited, as this will entail negative consequences. If you have experience using the models described in the rating, or more interesting representatives, tell us about it in the comments.
