Start Frequency For Fcc - Siemens MICROMASTER 440 Parameter Manual

Issue 01/06
P1333[3]

Start frequency for FCC

CStat: CUT
P-Group: CONTROL
Defines the FCC starting frequency as a percentage of the rated motor frequency (P0310).
When FCC is activated using P1300 = 1, then as a function of the FCC starting frequency plus hysteresis
and the actual frequency, a changeover is made with a continuous transition between the linear V/f
characteristic (P1300 = 0) and FCC (refer to the diagram).
P0310
=
f
FCC
100
P0310
=
f
+
FCC Hys
100
Index:
P1333[0] : 1st. Drive data set (DDS)
P1333[1] : 2nd. Drive data set (DDS)
P1333[2] : 3rd. Drive data set (DDS)
Notice:
- A value that is excessively low can result in instability.
- The constant voltage boost P1310 is continuously de-activated - essentially the same as when
switching-in FCC.
- Contrary, the voltage boosts P1311 and P1312 remain active over the complete frequency range.
MICROMASTER 440 Parameter List
6SE6400-5BB00-0BP0
Datatype: Float
Active: Immediately
⋅
P 1333
( )
⋅ +
P 1333 6 %
Parameter Description
Min:
Unit: % Def:
QuickComm.: No Max:
FCC
V/f
f f
FCC FCC+Hys
Level
0.0
3
10.0
100.0
f
161