Voltage Boost - Siemens MICROMASTER 440 Operating Instructions Manual

Issue 10/06
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3.23.1.1

Voltage boost

Parameter range:
Warnings
Faults
Function chart number:
For low output frequencies, the V/f characteristics only output a low output voltage.
Even at low frequencies, the ohmic resistances of the stator winding play a role,
which are neglected when determining the motor flux in Section 3.23.1. This means
that the output voltage can be too low in order to
implement the magnetization of an induction motor,
to hold the load
to compensate voltage drops (ohmic losses in the winding resistances) in the
system or
to provide a breakaway / accelerating / braking torque.
The output voltage can be increased (boosted) in MICROMASTER using the
following parameters (refer to Table 3-39):
MICROMASTER 440 Operating Instructions
6SE6400-5AW00-0BP0
Application This is a characteristic which takes into consideration the special
adaptation technological issues of an application (e.g. textile applications),
a) Where the current limiting (Imax controller) only influences the output
voltage and not the output frequency, and
b) By inhibiting the slip compensation
Application This is a characteristic which takes into consideration the special
adaptation technological issues of an application (e.g. textile applications),
with a) Where the current limiting (Imax controller) only influences the output
FCC voltage and not the output frequency, and
b) By inhibiting the slip compensation
Independent The user can enter the output voltage of the drive inverter, independently of
voltage the frequency, using a BICO parameter P1330 via the interfaces (e.g.
input analog input → P1330 = 755).
P1310, P1311, P1312
r0056 bit 05
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FP6100
3 Functions
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