Introduction To ThinkTop DeviceNet

The sensor system accurately detects valve stem movement, the position of the valve at any given time, with an accuracy of plus or minus 0.1mm through the use of microchip sensors. To locate the current valve position, sensor chips inside the sensor board calculate the angle between the axial magnetic field produced by an indication pin mounted on the valve stem. . The solenoid valves receive signals from the PLC system to activate or deactivate the air-operated valve. It then transmits feedback signals indicating up to four valve positions and conditions back to the PLC system. . In the control unit, up to three electric solenoid valves can physically convert compressed air into mechanical energy to activate or deactivate the pneumatic valve actuator. . Each control unit fits any Alfa Laval hygienic valve and provides a tolerance band for valves to prevent product contamination and failure. This eliminates the need to re-adjust the sensors and boosts productivity. . LEDs conveniently display all the valve positions, solenoid activation, setup and local fault indication on the control unit.