Functions, monitoring, and protective functions
9.2 Active Infeed functions
Drive converter cabinet units
Operating Instructions, 07/07, A5E00288214A
303
9.2
Active Infeed functions
9.2.1
Line and DC link identification
Description
Automatic parameter identification is used to determine all the line and DC link parameters,
thereby enabling the controller setting for the Line Module to be optimized.
Note
If the line environment or DC link components are changed, automatic identification should
be repeated with p3410 = 4 (e.g. once the system has been installed or the drive line-up
extended).
The rated current flows during line identification, which can result in a supply-side voltage
dip.
When the identification function is activated, alarm A06400 is output.
Identification methods
●
When p3410 = 1, an identification run for the total inductance and DC link capacitance is
initiated when the pulses are next enabled. The results are displayed in r3411 and r3412.
This identification method can be used to check the data in parameters p3421 and p3422
active for closed-loop control.
●
p3410 = 2 copies the data (r3411 and r3412) determined during identification (p3410 = 1)
to p3421 and p3422 (volatile). Calculations for the controller are then repeated. p0977 =
"1" can be used to store the parameters in a non-volatile memory.
●
When p3410 = 3, 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) is copied to p3421 and p3422 and the controller parameters are
recalculated. All of the parameters for the infeed module are then automatically stored in
a non-volatile memory.
●
In addition to p3410 = 3, p3410 = 4 determines the parameters for adapting the current
controller (p3620 and p3622).
Note
You are advised to use this identification method.
●
p3410 = 5 recalculates the controller on the basis of standard values (p0223 and p0227)
before identification is carried out. Identification is then started as with p3410 = 4.
Closed-loop control may have to be reset to the factory setting if the identification process
is unsuccessful.
