Application Manual CDA3000
6-35
6 Control modes
1
2
3
4
5
6
A
DE
EN
FR
Parameters of current control
Parameter Function Value range FS Unit Online
800-CCG Current controller gain 0...500 48
801-CCTLG Current controller lag time 0.001...100 0.0036 s
802-CCTF
Filter time constant for current meas-
urement in SFC
0.0005...20 0.01 s
803-VCSFC
Correction factor of fault voltage charac-
teristic SFC
0...199 * %
804-CLIM1
CDS1: Maximum reference current for
current control
0...180 100 %
805-CLIM2
CDS2: Maximum reference current for
current control
0...180 100 %
Table 6.14 Parameters of subject area _80CC Current control
Explanatory notes
• The filter time constant for current measurement is used only by the
Sensorless Flux Control (SFC) control mode.
• The parameters of the current controller are set automatically during
auto-tuning in the initial commissioning phase. It is not necessary to
change the calculated values of the PI controller for the gain
(800-CCG) and the lag time (801-CCTLG).
• The q-current is regulated to its reference value by the PI current
controller.
• The D-current generally deviates from its reference value. An opti-
mization can be achieved with the aid of the VCSFC parameter,
enabling online adaptation of the fault voltage characteristic for the
application (see section 6.2.3 “Tips and optimization aids for control
engineers”, subsection headed “Optimization of the D-current”).
• Parameter values marked by an asterisk (*) in the “Factory setting”
(FS) column are dependent on the device power output. The values
correspond to an asynchronous IEC standard motor with the rated
device power output.
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