Issue 01/06

Parameter Description

P1333[3] Start frequency for FCC

 

 

Min:

0.0

CStat:

CUT

Datatype: Float

Unit: %

Def:

10.0

P-Group:

CONTROL

Active: Immediately

QuickComm.: No

Max:

100.0

Defines the FCC starting frequency as a percentage of the rated motor frequency (P0310).

Level

3

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).

fFCC =

P0310P1333

 

 

over

FCC

 

fFCC Hys

100

 

 

V/f

 

 

100

 

 

Switch-

 

+

 

=

P0310(P1333

+

6%)

 

 

 

 

 

 

 

 

 

 

fFCC

f

 

 

 

 

 

 

 

fFCC+Hys

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

161

Page 161
Image 161
Siemens 440 manual P13333 Start frequency for FCC, 161, Datatype Float Unit % Def 10.0 Group