What characterises a LAN relay?
The special feature of a LAN relay is obvious: these modules have an Ethernet port. Wire your Ethernet relay and carry out all programming and control processes via this port. From configuration to daily control: Benefit from a stable connection! With wireless relays as an alternative to LAN relays , there is a greater risk of the contact temporarily breaking.
In addition, a relay with a LAN connection works like a WLAN relay and other versions. The central function of such a module is to switch working circuits separately. Whether in industrial control systems, building technology or communication technology: relays with a LAN connection fulfil indispensable tasks and are characterised by the fact that they replace manual switching.
Electromechanical versus electrical relays
If you are looking for the right relay for your project in areas such as automation, the first step is to make a fundamental decision: electromechanical or electronic version. When we talk about a LAN relay, we usually mean an electromechanical module. The power supply ensures the functioning of these Ethernet relays, but the switching is done mechanically using a coil. The contact via the armature is either closed or open; when the contact is closed, current flows into the working circuit. These contact movements are absent in solid state relays as electronic modules.
In some applications, electromechanical relays are considered obsolete, while in other areas users appreciate the various advantages. These include
- Reliable galvanic isolation between the circuits
- Low contact contact resistance
- Protective circuit against induction currents only required in rare cases
Application example: Importance of the LAN relay in home automation
Relays with LAN connection are used in numerous settings. In conjunction with a controller, you can use multi-channel relays to control various industrial applications, for example. Each channel can be individually programmed and controlled, which enables flexible and precise control. Use a LAN relay to set up complex communication applications, realise your robotics project or automate your research laboratory. In all these cases, you can switch the relay via the network.
A concrete example will illustrate the benefits of LAN relays: An Ethernet module of this type provides valuable services in home automation , for example, also known as smart home systems in the private sector. The control centre acts as an interface that forwards the signals to the individual components such as lights, shutters and alarm systems. A relay with LAN connection is one way of realising this control. Switching the relay via the network? A relevant process in home automation!
How do you choose the right relay for your project?
If you want to buy the right Ethernet relay, there are many factors to consider. These include the number of inputs and outputs and the power supply requirements. In addition to the LAN cable and the housing, a suitable power supply unitis also required to ensure the power supply to the relay module. Check technical data such as operating voltage, maximum charging voltage and the data transfer rate for Ethernet. Extras such as LEDs for the status display make monitoring easier.
How do you programme and control your network relay?
Many relays can be programmed and controlled web-based after you have established the connection via LAN. Alternatively, some LAN relays allow a wireless connection, which you can also use for programming and control. Many relays can be programmed web-based so that you can make the settings conveniently via the network. For more options on the subject of relay network switching, please refer to the detailed product descriptions!
What accessories do you need for a relay?
The most important accessory is the LAN cable: Order a cable of the right length from our shop if you do not have one available. You can also find a housing for your relay LAN module here. Relays are components of comprehensive electronic constructions: Equip yourself with other components such as Arduino platforms and sensors!
Frequently asked questions about LAN relays
What are the advantages of a LAN relay over a WLAN relay?
A LAN relay offers a more stable and reliable connection compared to a WLAN relay, as it is not affected by interference in the radio network. It is particularly suitable for applications where continuous control is required.
Can a LAN relay also be used in a wireless network?
Some LAN relays offer additional options for a wireless connection so that you can operate them via both Ethernet and WLAN. However, it depends on the model whether this function is supported.
How many working circuits can a LAN relay switch simultaneously?
The number of working circuits that a LAN relay can control depends on the number of available channels. Multi-channel relays can switch several circuits independently of each other and are ideal for complex automation projects.
What safety functions do LAN relays have?
Many LAN relays offer functions such as galvanic isolation, which prevents high voltages or interference from entering the control circuit. In addition, some models have protective circuits that protect against overloads and induction currents.
What software is required to control a LAN relay?
Most LAN relays can be controlled web-based via a browser without the need for additional software. However, some models also offer APIs or special control software that offers advanced programming options.
