Sytronix DFE - the variable speed pressure and flow rate control system

Sensors detect the current system pressure and the pump adjustment, and transfer these values to the pump-integrated digital on-board control electronics. After matching the current actual values with the target values transmitted by the control, the integrated control calculates the optimal speed for the entire drive strain.

 
DFE Function
 
 

The system operates an axial piston pump and its delivery volume can be adjusted through the swivel angle. The specialty of the DFE system is that the hydraulic volume flow rate can be adjusted by adjusting the swivel angle, as well as by changing the rotational speed of the electric motor. Compared to the other Sytronix variable-speed pump drives, the DFE system's additional degree of freedom ensures a significant reduction of the strain on the electric engine under the same hydraulic conditions. The control system is available for pumps of the series A10 and A4, and can therefore be used for a wide range of applications.

A teach-in mode can be used for the high demands placed on the dynamics of the system in cyclically working machines to accelerate the system in time before a high volume flow is required.

In non-cyclic machines, the optimal rotation speed and pump adjustment is calculated permanently. A Boost function helps to raise the dynamic of the system during acceleration.

Additional Features like "Safety on Board", pump protection, condition monitoring etc. as well as multi-ethernet communication are available with the IndraDrive servo controller family.

 
 
Axial piston pump for 2-quadrant operation (open hydraulic circle)

Axial piston pump for 2-quadrant operation (open hydraulic circle)