Line And Dc Link Identification - Siemens SINAMICS S120 Function Manual

1.1.5

Line and DC link identification

The characteristic line supply and DC-link quantities are determined using the automatic
parameter identification routine. They provide the basis to optimally set the controllers in the
Line Module.
An optimal setting of the current and voltage control is achieved with the help of the line
supply and DC link identification routine. The dynamic response of the current control can be
adjusted with p3560.
Note
Repetition of the supply / DC link identification
If the line supply environment or the components connected to the DC link change (e.g. after
installation of the equipment at the customer's site or after expanding the drive line-up), the
line supply / DC link identification routine should be repeated with p3410 = 5. Only then can
it be guaranteed that the infeed operates with the optimum controller settings.
When the identification function is activated, alarm A06400 is output.
Identification methods
For additional identification methods, see the SINAMICS S120/S150 List Manual.
● p3410 = 4: Identify and save controller setting with L adaptation
● p3410 = 5: Reset, save controller setting with L adaptation
p3410 is automatically set to 0 when one of the two identification routines (p3410 = 4 or
p3410 = 5) completes successfully.
Note
Identification using p3410 = 5 should preferably be used.
It may be necessary to reset the closed-loop controller to the factory settings if an
identification run was unsuccessful, for example.
Drive functions
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
An identification run for the total inductance and DC-link capacitance is 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 (p3620, p3622). All infeed parameters are then automatically
stored in non-volatile memory.
The infeed continues to operate without interruption on the new controller parameters.
The same measurements and write operations are always carried out for p3410 = 4.
Before the first identification run, however, the parameter values for line inductance and
DC-link capacitance are reset (p3421 = p0223 and p3422 = p0227).
Infeed
1.1 Active Infeed
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