Siemens SINAMICS PERFECT HARMONY GH180 Function Manual page 96

Parameter Assignment/Addressing
6.3 Options for Motor Menu (1) - first half
Parameter ID
Motor torque lim‐ 1210
it 2
Regen torque 1220
limit 2
Motor torque lim‐ 1230
it 3
Regen torque 1240
limit 3
Phase Imbalance 1244
Limit
Ground Fault Limit 1245
Ground Fault Time 1246
Const
Peak Reduction En‐ 1248
able*
Loss of field level 1141
Loss of field time‐ 1142
out
* The purpose of the Peak Reduction Enable (1248) parameter is to set the starting point of
third harmonic injection, peak reduction, based on either the default VFD voltage rating or
the motor voltage rating. Refer to the following figure. This is used in motor test stand
applications where the VFD voltage rating may be considerably higher than the motor
voltage rating, to reduce voltage stress on the insulation of a smaller motor.
94
Unit Default Min
% 100.0 0.0
% -0.25 -300.0
% 100.0 0.0
% -0.25 -300.0
% 40.0 0.0
% 5.0 0.0
sec 0.017 0.001
VFD volt rat‐
ing
% 40.0 5.0
sec 10.0 0.5
Max Description
300.0 Set the motoring torque limit as a function of
the available motor current. Select via the
SOP.
0.0 Set the regenerative torque limit as a func‐
tion of rated motor current at full speed. The
limit is allowed to increase inversely with
speed to a maximum of the motoring limit.
Select via the SOP.
Note: For drives with film capacitors (i.e. wa‐
ter-cooled 6SR325), change the setting to -
0.15 %. These cells have less losses and fail‐
ure to make this change could result in an
over voltage trip during deceleration of the
drive.
300.0 Set the motoring torque limit as a function of
the available motor current. Select via the
SOP.
0.0 Set the regenerative torque limit as a func‐
tion of rated motor current at full speed. The
limit is allowed to increase inversely with
speed to a maximum of the motoring limit.
Select via the SOP.
Note: For drives with film capacitors (i.e. wa‐
ter-cooled 6SR325), change the setting to -
0.15 %. These cells have less losses and fail‐
ure to make this change could result in an
over voltage trip during deceleration of the
drive.
100.0 Set the current threshold level for the output
phase current imbalance alarm.
100.0 Set the threshold of voltage for the output
ground fault alarm.
2.000 Set the filter time constant for averaging the
ground voltage and delaying the response of
the ground fault detection.
Select the Peak reduction (third harmonic
injection point) based on VFD or motor volt‐
age rating and neutral connection:
• VFD volt rating (default)
• Motor volt rating
50.0 Set the loss of field (I
25.0 Set the loss of field timeout period for SM
control.
) level for SM control.
ds
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Operating Manual, A5E50491925A