Siemens SINAMICS V90 Getting Started page 98

Par. No. Name
p29120[0.. Speed loop gain
.1] **
Description: Speed loop gain.
Two speed loop gains in total are available. You can switch between these two gains by configuring the digital
input signal G-CHANGE or setting relevant condition parameters.
The first speed loop gain is the default setting.
Dependency: The parameter value will be set to default after configuring a new motor ID (p29000).
p29121[0.. Speed loop integral time
.1] *
Description: Speed loop integral time.
Two speed loop integral time values in total are available. You can switch between these two time values by
configuring the digital input signal G-CHANGE or setting relevant condition parameters.
The first speed loop integral time is the default setting.
Dependency: The parameter value will be set to default after configuring a new motor ID (p29000).
p29130 Gain switching: Mode
selection
Description: Selects gain switching mode.
0: Disabled
•
1: Switch through DI-G-CHANG
•
2: Position deviation as switch condition
•
3: Pulse input frequency as switch condition
•
4: Actual speed as switch condition
•
Note: Only when the auto tuning function (p20021=0) is disabled can the gain switching function be used.
p29131 Gain switching condition:
Pulse deviation
Description: Triggers position deviation threshold for gain switching. If the gain switching function is enabled
and this condition is selected:
Switch from the first group of control parameters to the second group when the position deviation is larger
•
than the threshold.
Switch from the second group of control parameters to the first group when the position deviation is small-
•
er than the threshold.
p29132 Gain switching condition:
Position setpoint frequen-
cy
Description: Triggers pulse input frequency (PTI) threshold or internal position speed (IPos) threshold for gain
switching. If the gain switching function is enabled and this condition is selected:
1. PTI
– Switch from the first group of control parameters to the second group when the pulse train input pulse
is higher than the threshold.
– Switch from the second group of control parameters to the first group when the pulse train input is low-
er than the threshold.
2. IPos
– Switch from the first group of control parameters to the second group when the speed of fixed position
setpoint is larger than the threshold.
– Switch from the second group of control parameters to the first group when the IPos is smaller than the
threshold.
98
Min Max
0.00 999999.00
0.00 100000.00
0 4
0 214748364
7
0 214700006
4
Factory Unit Data
Setting type
[0] Nms Float
Motor /rad
de-
pendent
[1] 0.30
[0] 15 ms Float
[1] 20
0 - I16
100 LU I32
100 100 Float
0
LU/
min
Effective Can be
changed
IM T, U
IM T, U
IM T
IM T
IM T
Getting Started
A5E36037886-003, 04/2017