Line Supply And Dc Link Identification - Siemens SINAMICS S120 Function Manual

The DC link voltage (p3510) can be set for both the ALMs for the Chassis format and the ALMs
for the Chassis-2 format within the following limits:
● Upper limit:
– Maximum DC link voltage (p0280)
– Product of the supply voltage (p0210) and step-up factor (max. p3508 = 2.00)
● Lower limit: Supply voltage (p0210) multiplied by 1.42
For ALMs in the Chassis and Chassis-2 formats, the following DC link voltage values apply
(p0280):
Device voltage
380 ... 480 V
500 ... 690 V
The values are entered in the parameter p0280 (DC link voltage maximum).
3.1.3

Line supply and DC link identification

Function description
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 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
supply/DC-link identification routine should be repeated with p3410 = 5. Only then can it be
guaranteed that the infeed unit operates with the optimum controller settings.
When the identification function is activated, alarm A06400 is output.
Note
While the identification routine is running, it is not permissible that other loads are switched-in/
switched-out.
Drive functions
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Default setting
750 V
0.875 · p0210 + 502 V
Minimum Maximum
50 V 785 V
50 V 1130 V
Infeed
3.1 Active Infeed
35