Line And Dc Link Identification - Siemens SINAMICS S120 Function Manual

1.2.2

Line and DC link identification

With automatic line and DC link identification, the parameters required for operat-
ing the Line Module as efficiently as possible are determined.
Note
If the line environment or DC link components are changed, automatic
identification should be repeated with p3410 = 5 (e.g. once the system has been
installed or the drive line-up extended).
When the identification function is activated, alarm A06400 is output.
Identification methods
For additional identification methods, see the List Manual.
S When p3410 = 4, an identification run for the total inductance and DC link
capacitance is initiated when the pulses are next enabled. The data determined
during identification (r3411 and r3412) are transferred into p3421 and p3422
and the controller parameters recalculated. The identification is then repeated
at an increased current level (p3415[1]). If the inductance measured the second
time is lower, the parameters are written to the current controller adaptation
(p3620, p3622). All of the parameters for the infeed module are then
automatically stored in a non-volatile memory. The infeed continues to operate
without any interruption with the new controller parameters.
S When p3410 = 5, the same measurements and write operations are carried out
as when p3410 = 4. During the first identification run, however, the controller
setting is initially reset by setting p3421 = p0223 and p3422 = p0227. Before
the measurements are taken, a short identification run is also carried to
establish the initial controller settings. p3410 is automatically set to 0 after an
identification run has been successfully completed.
Note:
The identification method with p3410 = 5 is the preferred method.
Closed-loop control may have to be reset to the factory setting if the
identification process is unsuccessful.
Key parameters for line and DC link identification (see List Manual)
S p3410
S p3421
S p3422
© Siemens AG, 2005. All rights reserved
SINAMICS S120 Function Manual, 06/05 Edition
Infeed identification method
Infeed inductance
Infeed DC link capacity
Supply
Smart infeed
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