With the ESX.4ct, STW has developed a multifunctional compact controller. It is not only based on the future-proof Aurix platform, but also offers an integrated tilt sensor and Bluetooth support. Thanks to the latest security mechanisms, the controller is also protected against tampering.
Small size does not mean compromising on performance. STW's ESX.4ct compact controller is the best example of this. Like the entire new ESX product family, the ESX.4ct is based on Infineon Aurix microcontrollers. Thanks to the standardized hardware and software platform, applications can be easily ported from one controller to another. The ESX.4ct microcontroller can be programmed using C/C++, logi.CAD 3 (IEC6131-3) or MATLAB/Simulink, making it a powerful solution for smaller mobile machines such as mini-excavators and compact truck cranes, or for implementing semi-automated assistance and vehicle systems in larger machines.
In addition to the Aurix microcontroller with a 300 MHz core, the ESX.4ct offers a high degree of flexibility, especially in terms of connectivity. Up to 3 CAN interfaces with ISOBUS support and a maximum of 22 multifunctional inputs and 13 outputs are available. The inputs are variably configurable, SENT and Namur are supported and PVG valves can also be controlled via the 8 half-bridge outputs. Wireless communication with the ESX.4ct is possible via Bluetooth 5.1 LE.
More convenience during maintenance
This Bluetooth interface allows control and machine data to be read wirelessly using mobile devices such as smartphones, tablets or laptops. This gives maintenance and service teams a convenient way to upload configuration files and access fault codes without the need for a time-consuming cable connection to the controller.
The Bluetooth interface can also be used to implement new business models. For example, an app that connects to the automation system via Bluetooth allows customers to book optional services as needed. These include driver assistance functions such as lane departure warning or the creation of different driver profiles for the response of the chassis or steering system. This allows the operator to choose the level of automation and assistance for his machine.
Intelligent features for automated steering systems
The optional integrated 6-axis inclination sensor also contributes to the ease of use of the ESX.4ct. It records accelerations and rotation rates in all three spatial axes in a measuring range of ±2/±4/±8/±16 g or ±125 to ±4000 dps. This data can be used in particular for position compensation of GNSS information. The data from conventional navigation modules can be too inaccurate for GNSS-guided steering or guidance systems, for example when driving on a steep slope. The data from the integrated gyro sensor can be used to compensate for high-precision localization of axles and work tools.
At the same time, the 6-axis tilt sensor contributes to greater safety and process quality. If the satellite navigation connection is lost, the acceleration and inclination data from the ESX.4ct's integrated sensor can be used to maintain the track.
Safe from manipulation
STW is not only a pioneer in intelligent automation and functional safety, but is also working on the security challenges of the future. From 2027, the Cyber Resilience Act will require all manufacturers of products with digital components - including automation technology manufacturers and their customers - to ensure the cybersecurity of their products and close any security gaps throughout the entire lifecycle.
As a partner to the world's leading mobile machinery manufacturers, cybersecurity is a critical issue for STW. If machines come to a standstill during critical phases of work processes, the economic consequences can be enormous. And if machines get out of control due to digital manipulation, it can quickly lead to life-threatening situations.
Therefore, STW has already prepared the ESX.4ct for these requirements with the latest security update. Among other things, the compact controller will support secure boot and secure firmware and software updates in the future. By comparing different security keys, the controller can ensure that data records have not been tampered with and that only authorized persons can make changes to the firmware. Additional security features have been announced.
Like all STW control components, the ESX.4ct is designed for use in the harshest conditions. The automation components are IP69K rated, making them ideal for use in all mobile machinery.
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