Design of an app-controlled valve
One valve variant: a single valve replaces over 50 individual components
This new valve technology can be used for a wide range of products, functions and complete solution packages. The only prerequisite is a valve design with multiple degrees of freedom for actuation, as well as integrated data acquisition and processing suitable for a cyber-physical system. The overall economic advantages for both the machine builder and the operator as a result of the valve's variability are immense.
- Four diaphragm poppet valves: actuating the poppet valves individually enables a high degree of flexibility.
- Four piezo pilot valves: the energy-saving piezo pilot valves control the diaphragm poppet valves precisely and proportionally.
- Valve electronics with sensors: the integrated stroke, pressure and temperature sensors provide optimal control and transparent condition monitoring.
Valve technology: bridge circuit
The bridge circuit in the valve of the Festo Motion Terminal is an innovative valve system that is based on the basic elements of pneumatic valve functions.
- Four 2/2-way valves (diaphragm poppet valves) are connected in series to form a full bridge.
- Each diaphragm poppet valve (grey) is proportionally piloted and controlled by two piezo valves (blue).
- Sensors monitor the stroke of each poppet valve, while pressure sensors monitor the pressure at ports 2 and 4.
All four pilot cartridges (blue) form a total of eight proportionally controlled 2/2-way valves. Thanks to the integrated sensors and proportional control, which allows the valves to be pressurised and exhausted independently, this single valve technology can now be used to execute a wide range of conventional valve functions and full system solutions, such as Soft Stop (end-position cushioning without a wear-prone shock absorber).