Siemens SINAMICS G120 List Manual page 311

Note: The data of p1992 are updated in a 4 ms cycle.
Fast changes of the encoder status word bits can be better investigated using p7830 and following.
PolID: Pole position identification
p1999[0...n] Ang. commutation offset calibr. and PollD scaling / Com_ang_offs scal
Access level: 4
Can be changed: U, T
Unit group: -
Min
10 [%]
Description: Sets the scaling for the runtime of the pole position identification technique in which the current is injected.
Dependency: Refer to: p0341, p0342
Caution: For p1999 > 100 % (setting large moments of inertia) the following applies:
There is no locked rotor monitoring (F07970 fault value 2).
Note: For high moments of inertia, it is practical to scale the runtime of the calibration higher.
p2000 Reference speed reference frequency / n_ref f_ref
Access level: 2
Can be changed: T
Unit group: -
Min
6.00 [rpm]
Description: Sets the reference quantity for speed and frequency.
All speeds or frequencies specified as relative value are referred to this reference quantity.
The reference quantity corresponds to 100% or 4000 hex (word) or 4000 0000 hex (double word).
The following applies: Reference frequency (in Hz) = reference speed (in ((rpm) / 60) x pole pair number)
Dependency: This parameter is only updated during the automatic calculation (p0340 = 1, p3900 > 0) if motor commissioning was
carried out beforehand for drive data set zero. This means that the parameter is not locked against overwriting using
p0573 = 1.
Refer to: p2001, p2002, p2003, r2004, r3996
Notice: When the reference speed / reference frequency is changed, short-term communication interruptions may occur.
Note: If a BICO interconnection is established between different physical quantities, then the particular reference quantities
are used as internal conversion factor.
Example 1:
The signal of an analog input (e.g. r0755[0]) is connected to a speed setpoint (e.g. p1070[0]). The actual percentage
input value is cyclically converted into the absolute speed setpoint using the reference speed (p2000).
Example 2:
The setpoint from PROFIBUS (r2050[1]) is connected to a speed setpoint (e.g. p1070[0]). The actual input value is
cyclically converted into a percentage value via the pre-specified scaling 4000 hex. This percentage value is
converted to the absolute speed setpoint via reference speed (p2000).
p2001 Reference voltage / Reference voltage
Access level: 3
Can be changed: T
Unit group: -
Min
10 [Vrms]
Description: Sets the reference quantity for voltages.
All voltages specified as relative value are referred to this reference quantity. This also applies for direct voltage
values (= rms value) like the DC link voltage.
The reference quantity corresponds to 100% or 4000 hex (word) or 4000 0000 hex (double word).
Note:
This reference quantity also applies to direct voltage values. It is not interpreted as rms value, but as DC voltage
value.
SINAMICS G120 CU250S-2 Control Units
List Manual, 09/2017, A5E33842890
Calculated: -
Scaling: -
Unit selection: -
Max
5000 [%]
Calculated: p0340 = 1
Scaling: -
Unit selection: -
Max
210000.00 [rpm]
Calculated: p0340 = 1
Scaling: -
Unit selection: -
Max
100000 [Vrms]
2 Parameters
2.2 List of parameters
Data type: FloatingPoint32
Dyn. index: MDS, p0130
Func. diagram: -
Factory setting
100 [%]
Data type: FloatingPoint32
Dyn. index: -
Func. diagram: -
Factory setting
1500.00 [rpm]
Data type: FloatingPoint32
Dyn. index: -
Func. diagram: -
Factory setting
1000 [Vrms]
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