Siemens SINAMICS PERFECT HARMONY GH180 - Page 130

Parameter ID Unit Default Min Max Description
Output voltage scal‐
er
3450 1.0 0.0 2.0 Scaling for output voltage feedback.
Default value is normally adequate.
Output attenuator
sum
3455 kOhm 3000 100 32767 Scaling for the output nominal value. This is the
sum of the two output resistors per phase.
CAUTION
Setting scaling parameter values
Setting scaling parameter values incorrectly can cause unintended results that a󹪜ect
performance and disable drive protections.
Scaling parameter values must match actual hardware ratings.
Never change scaling parameter values from actual hardware ratings.
Note
Additional 󹪝ne-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
󹪝ne-tuning of the drive.
Table 6-53 Low Frequency Compensation Menu (3060) Parameters
Parameter ID Unit Default Min Max Description
Low freq com gain 3080 1.0 0.5 5.0 Low Frequency compensation gain for scaling es‐
timated 󹪞ux.
S/W compensator
pole
3090 2.0 0.5 20.0 Pole of software integrator used for 󹪞ux estima‐
tion.
Note
Help with higher starting torque using Low Frequency Compensation parameters
To start a motor with higher starting torque, apply more 󹪞ux to the motor when starting. In a
drive con󹪝gured to apply 30% of nominal 󹪞ux, and is setup to apply 156A (or 48% of nominal
current), increasing the motor 󹪞ux when starting will also help with torque production, since
Torque = FluxDS * Iqs.
Parameter 3080 Low freq comp gain can be used to apply more 󹪞ux 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.
Parameter Assignment/Addressing
6.8 Options for Stability Menu (3) - 󹪝rst half
NXGPro+ Control Manual
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