Siemens MICROMASTER 440 Operating Instructions Manual page 112

3 Functions
Starting boost (entered in %)
P1312 =...
Voltage boost when starting (after an ON command) when using the linear or square-law
V/f characteristic as a % relative to P0305 (rated motor current) or P0350 (stator
resistance). The voltage boost remains active until
1) the setpoint is reached for the first time and
2) the setpoint is reduced to a value that is less than the instantaneous ramp-function
generator output.
P1320 =... Programmable V/f freq.
coord. 1
Sets V/f coordinates
(P1320/1321 to P1324/1325) to
define V/f characteristic.
P1321 =... Programmable. V/f volt.
coord. 1
P1322 =... Programmable V/f freq.
coord. 2
Programmable V/f volt.
P1323 =...
coord. 2
Programmable U/f Freq.
P1324 =...
coord. 3
Programmable V/f volt.
P1325 =...
coord. 3
P1333 = ... Starting frequency for FCC
(entered as a %)
Defines the FCC starting frequency as a
function of the rated motor frequency (P0310).
P0310
=
f
FCC
100
=
f
+
FCC Hys
NOTE
The constant voltage boost P1310 is
continually decreased analog to switching-in
FCC.
Slip compensation
P1335 = ...
(entered in %)
Dynamically adjusts output frequency of
inverter so that motor speed is kept constant
independent of motor load.
Resonance damping gain V/f
P1338 =...
Defines resonance damping gain for V/f.
112
0.0 Hz
r0071
P0304
0.0 Hz
P1325
0.0 Hz
P1323
0.0 Hz
P1321
P1310
0.0 Hz
0.0 Hz
⋅ P 1333
P0310
( )
⋅ +
P 1333 6 %
100
V
V = f(V , M )
V
max dc max
max
V
n
f0 f1 f2
0 Hz P1320 P1322
P1310[%] r0395[%]
= ⋅
P1310[V]
100[%] 100[%]
10.0 %
FCC
V/f
0.0 %
Range of slip compensation :
%
P1335
MICROMASTER 440
Issue 10/06
0.0 %
f3 f f f
n max
P1324 P0310 P1082
⋅
P0304[V ]
f f
FCC FCC+Hys
6 % 10 % 100 %
0.00
Operating Instructions
6SE6400-5AW00-0BP0
f
f
out
f
N