With the newly developed generation of digital on-board electronics for hydraulics, Bosch Rexroth creates an economical scaling option between analogue components and those with fieldbus/Ethernet connection. Without additional cabling effort, it opens up the advantages of digitalisation with the open interfaces Bluetooth as well as IO-Link. Commissioners, operators and service technicians can access the components and change parameters directly and independently of the machine control system via app and smartphone.
The first components equipped with the new digital on-board electronics are new proportional pressure control valves. On the hardware side, they offer improvements with volume flow-independent pressure control as well as a linear setpoint-pressure characteristic in four pressure levels. The valves have both an integrated pressure sensor and a connection for external pressure sensors.
During initial commissioning, the components identify themselves via their digital nameplate and after a few moments technicians start parameterisation via their smartphone. An LED lights up blue during the connection and clearly shows the commissioning engineer which proportional pressure reducing valve he is currently connected to.
Commissioning engineers can select predefined parameter sets from Bosch Rexroth or define them themselves. They can save these and transfer them to identical valves. The new, patent-pending slider in the app further simplifies optimisation. When moving the slider between the "moderate" and "aggressive" characteristics, the app's software automatically adjusts all corresponding parameters to the selected dynamics.
For end users, the new digital on-board electronics significantly increase flexibility for process changes. If, for example, a tool twice as heavy as before is used on a press for a production changeover, a different valve often has to be used with previous machines. With the new generation, all it takes is calling up the app to adjust the parameters accordingly. This saves the end user the costs of a conversion and the associated machine downtime.
In addition, end users can use condition monitoring without additional effort. They can call up operating data such as temperature or operating hours via the app with the diagnostics button and thus protect themselves from surprises. Via IO-Link, users can also automatically store this status monitoring in the machine control system. Condition monitoring extends the service life of components and increases availability.