Siemens SINAMICS S120 Function Manual page 34

Infeed
1.2 Smart Infeed
Note
If the line supply environment changes, or the components connected to the DClink (e.g.
after installing and mounting the equipment at the customer's site or after expanding the
drive group), then the line supply/DC link identification routine should be repeated with
p3410 = 5. Only then can it be guaranteed that the infeed operates with an optimum
controller setting.
When the identification function is activated, alarm A06400 is output.
CAUTION
The line supply and DC link identification routine is not permissible for Smart Line Modules
of the Chassis type.
Identification methods
For additional identification methods, see the SINAMICS S List Manual.
● p3410 = 4: An identification run for the total inductance and DC link capacitance is
● p3410 = 5: The same measurements and write operations are always carried-out for
Note
Identification using p3410 = 5 should preferably be used.
Overview of key parameters (SINAMICS S List Manual)
● p3410 Infeed identification method
● p3421 Infeed inductance
● p3422 Infeed DC link capacity
34
initiated when the pulses are next enabled (two measuring routines with different current
magnitudes). Data determined during identification (r3411 and r3412) is entered into
p3421 and p3422 and the controller is recalculated. At the same time, the parameters for
current controller adaptation are determined (p6320, p6322). 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.
p3410 = 4. However, before the first identification run, the parameter values for line
inductance and DC link capacitance are reset (p3421 = p0223 and p3422 = p0227) and
the coarse settings are made for the controller.
p3410 is automatically set to 0 after an identification run has been successfully
completed.
It may be necessary to reset the closed-loop controller to the factory settings if an
identification run was unsuccessful, for example.
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
Drive Functions