7.4
DRn Soft Start
Application
To avoid the sudden increase of required electric power at system start, the
soft start function increases the motor speed in a ramp with the rise time set
in [F3.29].
Working principle
From the moment that 'run' command is given to the converter and the DRn
software, the motor speed will be increased slowly for the time set in [F3.29].
After this time, the system will reach maximum speed which is set in [F3.20].
Configuration of the parameters
The related parameters of the function soft start are:
Code
Name
Setting Range
Default
Attri.
F3.20
Speed adaptation: Maximum speed
0...10,000 rpm
1,000
Run
F3.29
Start-up time
0..30,000 ms
2,000
Run
Tab. 7-26:
Parameter list of DRn start-up function
7.5
Parameter Functions
7.5.1
Terminology and Abbreviation in Parameter List
●
Code: Function / parameter code, written in Cx.xx, Dx.xx, Ex.xx, Fx.xx
●
Name: Parameter name
●
Default: Factory default
●
Attri.: Parameter attribute
–
Run: Parameter setting can be modified when the converter is in
run or stop status.
–
Stop: Parameter setting can only be modified when the converter is
in stop status.
–
Read: Parameter setting is read-only and cannot be modified.
●
[Cx.xx], [Dx.xx], [Ex.xx], [Fx.xx]: Function / parameter values
DOK-SYTROX-DRN5020****-IT05-EN-P
Bosch Rexroth AG
107/143
Frequency-Controlled Pump Drive System Sytronix DRn 5020
Commissioning of Sytronix DRn 5020 System
