Directional control valves with multi-Ethernet interface

23 July, 2020

During operations, users can only change parameters via software using a digital interface in order to flexibly respond to new tasks. It also enables swift diagnosis and condition monitoring and thus increases machine availability. Rexroth covers different concepts and is currently the only manufacturer to offer IO-Link for directional control valves. An M12 standard cable is sufficient for setting up the point-to-point communication. Command values, actual values and important status information are transmitted via the digital interface in the cyclic range. In addition, further valve information such as histograms of temperatures, operating hours and error messages can be read in the acyclic range. This condition monitoring helps to reduce machine downtime. The digital name plate of the valves simplifies the spare part order process. Moreover, users can also enter offset values for the zero position of the axis via IO-Link and set acceleration and deceleration ramps in 4- quadrant operation.

Higher-level control commands

In the case of interpolating axes and more complex motion sequences, machine manufacturers usually use current bus technology. Rexroth meets this requirement with the directional control valve IFB with a multi-Ethernet interface to common real-time protocols. The higher-level control commands the valves. Users also have the option to configure versions with integrated pressure/force control via internal and external sensors and close the control loop in the valve decentral.

www.boschrexroth.com