Calculating The Motor / Control Data - Siemens MICROMASTER 440 Operating Instructions Manual

3 Functions
WARNING
The motor data identification routine (refer to Section 0) may not be used for loads
which are potentially hazardous (e.g. suspended loads for crane applications).
Before the motor data identification run is started, the potentially hazardous load
must be carefully secured (e.g. by lowering the load to the floor or by clamping the
load using the motor holding brake).
3.5.4

Calculating the motor / control data

The calculation of the internal motor / control data is initiated using parameter
P0340 or indirectly using parameter P3900 (refer to Section 3.5.3) or P1910 (refer
to Section 0). The functionality of parameter P0340 can, for example, be used if the
equivalent circuit diagram data (refer to Fig. 3-26) or the moment of inertia is
known. Possible settings for parameter P0340 are described in Table 3-9. Table
3-10 lists which parameters are calculated for the different settings.
Table 3-9
Parameter
P0340 = 0
P0340 = 1
P0340 = 2
P0340 = 3
P0340 = 4
NOTE
When exiting the quick commissioning with P3900 > 0 (refer to Section 3.5.3),
internally P0340 is set to 1 (complete parameterization).
For the motor data identification (refer to Section 0), after the measurement has
been completed, internally P0340 is set to 3.
Equivalent circuit diagram data always refer to the star circuit configuration
equivalent circuit diagram. If data for the delta equivalent circuit diagram are
available, then this should first be converted into the star equivalent circuit
diagram data before being entered.
If equivalent circuit diagram data (P0350, . . ., P0360) is available, then this
must be entered according to the motor circuit configuration being used (a star
circuit configuration requires star-type equivalent circuit diagram data). If there
is no consistency between the motor circuit configuration and the equivalent
circuit diagram data, then the equivalent circuit diagram data should be
converted according to the motor circuit configuration actually being used
(P0350
88
Possible settings for parameter P0340
Description
No calculation is made
Starting from the rating plate parameters (P0300 - P0335) the motor equivalent
circuit diagram parameters (P0350 - P0369) and the motor weight / moment of
inertia (P0344, P0341) are determined.
The V/f- / vector control parameters and reference quantities are then pre-assigned
(this includes all calculations from P0340 = 2,3,4).
Starting from the rating plate parameters, the motor equivalent circuit diagram
parameters (P0350 - P0369) are calculated (without any additional pre-assignments
being made).
Starting from the motor equivalent circuit diagram parameters (P0350 - P0369) and
motor weight / moment of inertia, moment of inertia ratio (P0344, P0341, P0342),
the V/f- / vector control parameters are determined (contains all of the calculations
from P0340 = 4).
Starting from the motor equivalent circuit diagram parameters (P0350 - P0369) and
motor weight / moment of inertia, moment of inertia ratio (P0344, P0341, P0342),
the vector control parameters are pre-assigned.
= P0350 , etc.).
∆ Y
MICROMASTER 440 Operating Instructions
6SE6400-5AW00-0BP0
Issue 10/06