Auxiliary Pump
If an auxiliary pump has been additionally installed on the motor shaft (e.g.,
cooling circuit or filter circuit), the additional load has to be taken into account
in the speed adaptation. For the internal calculation, the following parameters
have to be configured:
Code
Name
Setting range
Default
Attri.
F4.59
Auxiliary pump: Displacement
0.0...5,000.0 ccm
0.0
Stop
F4.60
Auxiliary pump: Pressure
0.00...250.00 bar
0.00
Stop
Tab. 7-8:
Parameter list of auxiliary pump
F4.59 Auxiliary pump: Displacement / F4.60 Auxiliary pump: Pressure
By means of the displacement and the pressure level of the auxiliary pump a
torque offset is calculated internally for the load observer:
The auxiliary pump compensation is deactivated as soon as one
of the two parameters F4.59, F4.60 have the value "0".
Fig. 7-30:
Secondary / auxiliary pressure configuration
Bosch Rexroth AG
DOK-SYTROX-DRN5020****-IT05-EN-P
82/143
Frequency-Controlled Pump Drive System Sytronix DRn 5020
Commissioning of Sytronix DRn 5020 System
