New flexibility for applications with low to medium complexity

A real alternative to micro PLCs: The next generation of control relays

Historically, many low to medium complexity applications had to be operated using a standard PLC because traditional control relays did not offer the required flexibility and resources. Development times and the cost per machine can now be significantly reduced thanks to the next generation of smart control relays with Ethernet communications and flexible programming using structured text. 

Simple machine building projects can quickly become more complex in the course of design revisions. In the past, traditional control relays quickly reached their limits in terms of functionality or the number of available I/Os. The next generation of intelligent control relays breaks down these boundaries by offering more connectable I/Os, fast Ethernet and web server functionalities and modular programming using structured text. As a result, these smart relays offer an extremely competitive alternative to small PLCs.


Application: material handling systems

With the easyE4, the next generation of smart control relays, it is now possible to implement more flexible application designs.

By using ‘ST’, you are able to do more than just integrate simple logic into the function blocks. Now you can create complex function blocks that are as sophisticated as those provided by the manufacturer.

Ulrich Kanngießer, Expert author and specialist for small control systems
The application description for material handling systems describes how easy it is to design modular applications using customised, reusable function blocks. By integrating these tested function blocks in the function block diagram or the ladder diagram, they can be easily implemented and configured, even without any prior programming knowledge, thereby reducing the commissioning time of the project.   

Future-proof machine control products

Now you can transcend the limitations of traditional control and logic relays. Create modular applications that will grow and evolve with your machines.

Traditional small controls often can’t cope if a customer application grows more complex over time. With its 11 expansion modules and flexible programming in ST, the easyE4 has much more to offer in this regard. The Ethernet connection not only makes it possible to connect various devices and touch panels of all sizes. It can also be used to integrate applications into larger IT networks or even to connect them to the cloud.

In addition, the easyE4’s NET connection makes it possible to design modular systems without creating additional traffic on the Ethernet network.

Featured products & services

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easyE4 control relay with display
easyE4 smart control relay with display
easyE4 control relay without display
easyE4 control relay without display
easyE4 I/O unit big
easyE4 I/O unit big
easyE4 I/O unit small
easyE4 I/O unit small
Touch panel XV100 for easyE4
Touch panel XV100 for easyE4, in 3.5'', 5.5'' or 7''. Bigger sizes are also available.

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