7.3
Commissioning (advanced)
7.3.1
Parameter Setting
Overview and introduction
Basic speed adaptation structure and related parameters
The basic speed adaptation structure and related parameters are shown in
the following figure:
Fig. 7-39:
Speed adaptation structure
(1) F1.09 Command value: Preferred swivel angle
(2) F3.12 Speed adaptation: P-gain, F3.13 Speed adaptation: I-gain, F3.16
Speed adaptation: D-gain
(3) F3.21 Speed adaptation: Ramp pitch, ascending, F3.22 Speed adapta‐
tion: Ramp pitch, descending
The information in this chapter will help you to optimize the speed adaptation
according to customer application.
The underlying principle consists in providing a preferred command value for
the DR/DRG pump swivel angle. The speed adaptation has been designed
as a PID controller and can be configured via the following parameters.
Code
Name
Setting Range
Default
Attri.
F1.09
Command value: Preferred swivel angle
0.00...100.00 %
70.00
Run
F3.12
Speed adaptation: P-gain
0.0...1,000.0 rpm/%
0.0
Run
F3.13
Speed adaptation: I-gain
0.0...1,000.0 rpm/%/s
50.0
Run
F3.16
Speed adaptation: D-gain
0.00...100.00 rpm/%*s
0.00
Run
F3.21
Speed adaptation: Ramp pitch, ascending
0...10,000 rpm/s
1,000
Run
F3.22
Speed adaptation: Ramp pitch, descending
-9,999...0 rpm/s
-800
Run
Tab. 7-25:
Parameter list of speed adaption
① Preferred swivel angle
●
F1.09, Command value: Preferred swivel angle [%]
The preferred swivel angle determines the angle at which DRn operates the
pump angle. This command value should be set between 10%...80%. It is re‐
sponsible for the energy savings you can get from the DRn system. Good
performance is between 40%...70% depending on the load flow the system
has. For zero load 60%...70% is a good range. For partial load 40%...60% is
good. If the system is always on full load, DRn can't save energy.
DOK-SYTROX-DRN5020****-IT05-EN-P
Bosch Rexroth AG
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Frequency-Controlled Pump Drive System Sytronix DRn 5020
Commissioning of Sytronix DRn 5020 System
