Siemens SINAMICS V20 Operating Instructions Manual page 276

Parameter list
8.2 Parameter list
Parameter Function
P1780[0...2] Control word of Rs/Rr-
adaption
Enables thermal adaptation of stator and rotor resistance to reduce torque errors in speed/torque regula-
tion with speed sensor, or speed errors in speed/torque regulation without speed sensor.
Bit
00
P1800[0...2] Pulse frequency [kHz]
Sets pulse frequency of power switches in converter. The frequency can be changed in steps of 2 kHz.
Dependency: The minimum/maximum/default values of the pulse frequency are determined by the used power module.
Furthermore the minimum pulse frequency depends on the parameterization of P1082 (maximum fre-
quency) and P0310 (rated motor frequency).
Note: If the pulse frequency is increased, maximum converter current r0209 can be reduced (derating). The
derating characteristic depends on the type and power of the converter.
If silent operation is not absolutely necessary, lower pulse frequencies may be selected to reduce con-
verter losses and radio-frequency emissions.
Under certain circumstances, the converter may reduce the pulse frequency to provide protection against
overtemperature (see P0290 and P0291 bit 00).
r1801[0...1] CO: Pulse frequency
[kHz]
Displays information about pulse frequency of power switches in converter.
r1801[0] displays the actual converter pulse frequency.
r1801[1] displays the minimum converter pulse frequency which can be reached when the functions "mo-
tor identification" or "converter overload reaction" are active. If no PM is plugged this parameter is set to 0
kHz.
Index: [0]
[1]
Notice: Under certain conditions (converter overtemperature, see P0290), this can differ from the values selected
in P1800 (pulse frequency).
P1802 Modulator mode
Selects converter modulator mode.
1
2
3
Notice:
Asymmetric space vector modulation (ASVM) produces lower switching losses than space vector
•
modulation (SVM), but may cause irregular rotation at very low speeds.
Space vector modulation (SVM) with over-modulation may produce current waveform distortion at high
•
output voltages.
Space vector modulation (SVM) without over-modulation will reduce maximum output voltage available
•
to motor.
P1803[0...2] Maximum modulation
[%]
Sets maximum modulation index.
Note: P1803 = 100 %: Limit for over-control (for ideal converter without switching delay).
274
Range
0 - 1
Signal name
Enable thermal Rs/Rr-adapt.
2 - 16
-
Actual pulse frequency
Minimum pulse frequency
1 - 3
Asymmetric SVM
Space vector modulation
SVM/ASVM controlled mode
20.0 - 150.0
Factory Can be Scaling
default changed
1 U, T -
1 signal
Yes
4 U, T -
- - -
3 U, T -
106.0 U, T -
Operating Instructions, 10/2019, A5E34559884-012
Data Data Acc.
set type Level
DDS U16 3
0 signal
No
DDS U16 2
- U16 3
- U16 3
DDS Float 3
SINAMICS V20 Converter