Digital axis cards perform the driver's functions for proportional valves, plus the position control of the linear or rotative actuator in a closed-loop to which the proportional valve is connected.

TEZ execution controls direct and pilot operated directional valves with one LVDT transducer
LEZ execution controls directional pilot operated valves with two LVDT transducers

The controlled actuator is equipped with an (analog, SSI, or Encoder) transducer for reading the axis position feedback. The axis card can be operated via an external reference signal or automatic cycle. A force alternated control is set through software additionally to the position control: a pressure/force transducer integrated into the actuator and connected to the axis card (a second pressure/force reference signal is required). Atos PC software allows customization of the axis card's configuration to meet the specific application requirements