Issue 01/06 parameter description – Siemens 440 User Manual
Page 157
Issue 01/06
Parameter Description
MICROMASTER 440 Parameter List
6SE6400-5BB00-0BP0
157
Dependency:
Continous boost P1310 has no effect during vector operation because the inverter calculates continously
the optimum operating conditions.
Note:
-
Increasing the boost levels increases motor heating (especially at standstill).
-
The boost values are combined when continuous boost (P1310) used in conjunction with other boost
parameters (acceleration boost P1311 and starting boost P1312).
-
However priorities are allocated to these parameters as follows:
P1310 > P1311 > P1312
-
The total boost is limited by following equation:
∑
P0350
P0305
3
I
R
3
V
Mot
s
Boost
⋅
⋅
=
⋅
⋅
≤
-
Setting in P0640 (motor overload factor [%]) limits the boost:
∑
100
P0640
P0350
P0305
V
Boost
≤
⋅
P1311[3] Acceleration
boost
Min: 0.0
CStat:
CUT
Datatype: Float Unit:
%
Def:
0.0
P-Group: CONTROL
Active: Immediately
QuickComm.: No
Max: 250.0
P1311 will only produce boost during ramping, and is therefore useful for additional torque during
acceleration and deceleration. Contrary to P1312, that is only active when an ON command is given, p1311
is active after each acceleration resp. deceleration. The boost is active, if P1311 > 0 resp. if the conditiones
given below are fulfilled.
Applies boost in [%] relative to P0305 (rated motor current) following a positive setpoint change and drops
back out once the setpoint is reached. It is activated when the setpoint changes and deactivated when the
setpoint is reached.
Vmax
Vn
(P0304)
V
AccBoost ,100
0
fn
(P0310)
fmax
(P1082)
f
V
f
Boost,end
(P1316)
V
AccBoost ,50
Boost
No
rm
al
V/f
(P
13
00
=
0)
actual V
Ou
tpu
t v
olt
ag
e
OFF
ON
t
t
f
P1311 active
t
0
1
Boost voltage
Validity range
where voltage values are given
100
P1311
0350
P
0305
P
V
100
,
AccBoost
⋅
⋅
=
2
V
V
00
AccBoost,1
0
AccBoost,5
=
Index:
P1311[0] : 1st. Drive data set (DDS)
P1311[1] : 2nd. Drive data set (DDS)
P1311[2] : 3rd. Drive data set (DDS)
Dependency:
Acceleration boost P1311 has no effect during vector operation.
Note:
See parameter P1310
Level
2