PVA204

The modules PVA204 and PVA208 enable the direct control of proportional valves without an amplifier using a single solenoid, bipolar or dual solenoids. Up to 4 solenoids can be connected to the compact PVA204 module, and 8 solenoids on the PV208, thus up to 8 unipolar valves with a width of 55 mm. The current-regulated control means that the self heating or temperature increases of the valve solenoids do not affect the position of the valve. Up to 20 support points are provided for correcting the characteristic curve of each solenoid, thus ensuring very precise linearization.

Besides the fully configurable dither function, ramps of 0.1 to 15 s can be set. The ramp setting range permitted during commissioning can be configured in the SolutionCenter, thus preventing possible damage to the plant resulting from incorrect entries.

Most parameters (characteristic curve, dither parameter etc.) can be configured directly via an application program or via the SolutionCenter or online via a web configurator. Configuration can thus be completed quickly and simply for all tasks e. g. for commissioning, remote maintenance, adaptive adjustments or valve exchanges during servicing. The valve configurations can be stored as templates. This allows different valves to be used quickly and easily in a plant without having to adapt the application program.

• Proportional valves with unidirectional, bidirectional or dual coils
• PVA204: 4 coils, PVA208: 8 coils
• Current-regulated control
• Characteristic curve correction, overlap and underlap correction
• Adjustable dither and ramp
• Configuration via application program, SolutionCenter and web configurator