Siemens SINAMICS S120 Manual De Listas página 2375

Speed pre-control signal [5490.7]
1 = Interpolation
Speed controller pre-control active
From speed control configuration
p1400.7
[3090.8]
[3090.8]
Speed setpoint
Enable ramp-function generator
from the
STW r0898.4
sequence
Enable velocity setpoint
control
r0898.6
[2501.7]
1
[3090.8]
0
0
<4>
1
n_ctrl setp sum
r1170
0
[3080.8]
n before setpoint filter
Speed setpoint from DSC
from function generator
r1407.4
[2522.7]
<1> Only for encoder:
p1400.10 = 1 is recommended if a torque pre-control signal is also
connected at [5060] in addition to the speed pre-control signal.
<2> The interpolator is only effective for clock-cycle synchronous
PROFIdrive operation and sign-of-life received from the master
(STW2.12 ... STW2.15). If the Dynamic Servo Control (DSC) is
active, an additional deadtime of one speed controller sampling
time is effective.
<3> For a 1/0 edge from control command STW2.8 "travel to fixed
stop" [2444] the output of all filters is set to the input value for an
instantaneous response to a change of the speed setpoint sign.
<4> The value is displayed correctly only with r0899.2 = 1 (Operation
enabled).
1 2
DO: SERVO
Servo control - Speed setpoint filter and speed pre-control
x,y x
y
x y
t
Interpolator
1
<2>
0
+
+
n_set smth
100 ms r0020
n_set before filt
[2701.1]
r0060
[2704.1]
p1416[D]
&
Setpoint filter 1
y
x y
t
PT1 low pass
fn_d
p1417[D]
+
D_d
+
p1418[D]
|y|
D
x y
fn
f
PT2 low pass
fn_n D_n
p1419[D] p1420[D]
y
x y
f
2nd Order filter
fn_d D_d
p1417[D] p1418[D]
3 4
r1432[1]
0
1
<1>
[5490.7]
1 = Speed pre-control
for balancing
From the speed control Monitoring
configuration
p1400.10
<3>
+
0
+
p1422[D]
1
y
p1414.0[D]
x
PT1 low pass
fn_d
p1423[D]
p1415[D]
0
|y|
1
x
2
PT2 low pass
fn_n
p1425[D]
y
x
2nd Order filter
fn_d
p1423[D]
5
fp_5020_01_eng.vsd
14.07.14 V05.02.03
p0115[1] (125.00 µs)
F07421
"Speed setpoint filter natural frequency > Shannon frequency"
p1414.1[D]
<3>
0
+
Setpoint filter 2
1
y
t
D_d
p1424[D]
p1421[D]
n after setpoint filter
from function generator
0
D
y
1
2
fn
f
D_n
p1426[D]
y
f
D_d
p1424[D]
6 7
Function diagram
SINAMICS S120
[5030.1]
[5042.5]
n_set after filt
r0062
+ To
speed controller
[5210.1]
and to
reference model
[5030.1]
8
- 5020 -