Siemens SINAMICS PERFECT HARMONY GH180 Function Manual page 130

Parameter Assignment/Addressing
6.8 Options for Stability Menu (3) - first half
Parameter ID
Output voltage scal‐ 3450
er
Output attenuator 3455
sum
Setting scaling parameter values
Setting scaling parameter values incorrectly can cause unintended results that affect
performance and disable drive protections.
Scaling parameter values must match actual hardware ratings.
Never change scaling parameter values from actual hardware ratings.
Note
Additional fine-tuning of the drive
Many of the parameters in the output processing menu use the default settings.
Only in special circumstances may you need to make changes to these parameters for additional
fine-tuning of the drive.
Table 6-53 Low Frequency Compensation Menu (3060) Parameters
Parameter ID
Low freq com gain 3080
S/W compensator 3090
pole
Note
Help with higher starting torque using Low Frequency Compensation parameters
To start a motor with higher starting torque, apply more flux to the motor when starting. In a
drive configured to apply 30% of nominal flux, and is setup to apply 156A (or 48% of nominal
current), increasing the motor flux when starting will also help with torque production, since
Torque = FluxDS * Iqs.
Parameter 3080 Low freq comp gain can be used to apply more flux to the motor in the 0 to 4.5Hz
speed range.
By setting this parameter to 0.75 (instead of the default of 1.0) will allow 133% of Flux to be
applied (inverse of 0.75) at 0 speed, which is linearly reduced to 100% at 4.5Hz and higher.
128
Unit Default
1.0
kOhm 3000
CAUTION
Unit Default
1.0
2.0
Min Max Description
0.0 2.0 Scaling for output voltage feedback.
Default value is normally adequate.
100 32767 Scaling for the output nominal value. This is the
sum of the two output resistors per phase.
Min Max Description
0.5 5.0 Low Frequency compensation gain for scaling es‐
timated flux.
0.5 20.0 Pole of software integrator used for flux estima‐
tion.
NXGPro+ Control Manual
Operating Manual, A5E50491925A