Proportional solenoids represent the linking element between electronic and hydraulic. The proportional solenoids are a form of DC linear solenoids. Proportional to the electrical current as the input variable, the produce force and travel as the output variable.
Corresponding to the practical application, a differentiation is made between:
- Solenoids with comparatively linear stroke/current relationship over a reasonably long stroke length, the so-called “stroke controlled solenoid”.
- Solenoid with particularly defined force/current relationship over a very short stroke, the so-called ” force controlled solenoid”.
Only DC linear solenoid can be used for the current-proportional changes in the output variable force and stroke. Due to their stroke dependent current consumption, AC solenoid must assume their final stroke position as soon as possible.