Lust CDA3000 - Tips and Optimization Aids for Control Engineers

Application Manual CDA3000
6-19
6 Control modes
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Note: When setting the parameter values manually in VFC mode,
please pay attention to the information set out in section 6.1.5
“Tips and optimization aids for control engineers” (step 3),
otherwise the “current-controlled startup” function may nega-
tively affect the “current injection” function.
767-CICT1 CDS1: Current injection reference at end
of CITM1
0 ... 180 30 %
768-CITM2 CDS2: Current injection timer for
switchover to CICT2
0 ... 60 6 s
769-CICT2 CDS2: Current injection reference at end
of CITM2
0 ... 180 30 %
Parameter Function Value range FS Unit Online
Table 6.7 Parameters from subject area _76CI Current injection
Explanatory notes
• In the frequency range CIFRx the current injection is regulated back
to the normal operating current as from the limit frequency CIFMx.
• In conjunction with IxR load compensation and slip compensation,
current injection can only operate simultaneously to a limit degree in
the startup phase.
In a fixed frequency range both functions may overlap and thus
restrict simultaneous working.
II: Current injection; IR: IxR load compensation; SL: Slip compensa-
tion
CIFMx: Limit frequency of current injection
0
100
[%]
II IR + SL
t [ms]
CIFMx
(CIFMx + CIFRx)
CIFRx