4.4
Product Description
The DRn 5020 system is used to realize a pressure controlled hydraulic sup‐
ply.
The pressure command value for the frequency converter is set by the pa‐
rameter settings of EFC 5610. The actual pressure value is measured by a
pressure transducer in the hydraulic system, which provides the feedback to
the frequency converter. The frequency converter controls the speed of the
asynchronous motor so that the pump driven by it displaces exactly the oil
volume required for providing the command pressure.
P
ACT
: Pressure actual value
n
CMD
: Velocity command value
α
CMD
: Swashplate command value
M
CMD
: Torque command value
Fig. 4-4:
System principle
DOK-SYTROX-DRN5020****-IT05-EN-P
Bosch Rexroth AG
31/143
Frequency-Controlled Pump Drive System Sytronix DRn 5020
About This Product