Active Infeed Open-Loop Control - Siemens SINAMICS S120 Function Manual

Supply
Active infeed
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.
Parameter overview (see List Manual)
S p3410
S p3421
S p3422
S p3620
S p3622
1.1.3

Active infeed open-loop control

Description
The Active Line Module can be controlled via the BICO interconnection by means
of terminals or the field bus. The operating status is indicated on the operating dis-
play r0002. The missing enable signals for operation (r0002 = 00) are mapped in
parameter r0046. The EP terminals (enable pulses) must be connected in accor-
dance with the Equipment Manual.
1-22
Infeed identification method
Infeed inductance
Infeed DC link capacity
Infeed current controller adaptation lower application threshold
Infeed current controller adaptation reduction factor
© Siemens AG, 2005. All rights reserved
SINAMICS S120 Function Manual, 06/05 Edition