Siemens SINAMICS V20 Operating Instructions Manual page 261

Parameter Function
P1810 Control word Vdc control 0 - 3
Configures Vdc filtering and compensation.
Bit
00
01
Note: P1810 default for the single phase variants is 2.
P1820[0...2] Reverse output phase
sequence
Changes sequence of phases without changing setpoint polarity.
0
1
Note: See P1000
P1825 On-state voltage of IGBT
[V]
Corrects on-state voltage of the IGBTs.
P1828 Gating unit dead time
[μs]
Sets compensation time of gating unit interlock.
P1900 Select motor data identi-
fication
Performs motor data identification.
0
2
Dependency: No measurement if motor data incorrect.
P1900 = 2: Calculated value for stator resistance (see P0350) is overwritten.
Notice: When the identification is finished P1900 is set to 0. When choosing the setting for measurement, observe
the following:
The value is actually adopted as P0350 parameter setting and applied to the control as well as being shown
in the read-only parameters below. Ensure that the motor holding brake is not active when performing the
motor identification.
Note: Before selecting motor data identification, "Quick commissioning" has to be performed in advance.
Since the cable length of the applications differs in a wide range, the preset resistor P0352 is only a rough
estimation. Better results of the motor identification can be achieved by specifying the cable resistor before
the start of the motor identification by measuring / calculating.
Once enabled (P1900 > 0), A541 generates a warning that the next ON command will initiate measurement
of motor parameters.
Communications - both via USS as well as via the Modbus - are interrupted for the time that it takes to
make internal calculations. These calculations can take up to one minute to complete.
P1909[0...2] Control word of motor
data identification
Control word of motor data identification.
Bit
00
01
SINAMICS V20 Inverter
Operating Instructions, 11/2016, A5E34559884-006
Range
Signal name
Enable Vdc average filter
Enable Vdc compensation
0 - 1
Forward
Reverse the Motor
0.0 - 20.0
0.00 - 3.98
0 - 2
Disabled
Identification of all parameters in standstill
0 - 65519
Signal name
Estimation of Xs
Motor ID at 2 kHz
Factory Can be
default changed
3 U, T
0 T
0.9 U, T
0.01 U, T
0 C, T
23552 U, T
Parameter list
8.2 Parameter list
Scaling Data Data
set type
- - U16
1 signal 0 signal
Yes No
Yes No
- DDS U16
- - Float
- - Float
- - U16
- DDS U16
1 signal 0 signal
Yes No
Yes No
Acc.
Level
3
2
4
4
2
4
261