Fig. 2-126 5020 – Speed setpoint filter and speed pre-control
- 5020 -
Function diagram
87654321
fp_5020_98_eng.vsd
DO: SERVO
SINAMICS S110
26.07.10 V04.04.00
Servo control - Speed setpoint filter and speed pre-control
PT1 low pass
PT2 low pass
p1416[D]
x
y
p1415[D]
fn_n
p1417[D]
D_n
p1418[D]
fn_z
p1419[D]
D_z
p1420[D]
fn_n
p1417[D]
D_n
p1418[D]
+
+
p1414.0[D]
Setpoint filter
To
speed controller
[5210.1]
and to
reference model
[5030.1]
Speed pre-control signal
Interpolator
n_prectrl
(0)
p1430[C]
x
y
x
x
1
0
1
0
y
f
2nd Order Filter
y
y
<2>
r0060
n_set before filt
t
y
r0062
n_set after filt
<3>
<1>
f
|y|
fn
D
0
1
2
250.00 μs
<3>
<4>
<5>
[3090.8]
F07421 "Speed setpoint filter natural frequency > Shannon frequency"
[5490.7]
1 = Interpolation
Speed controller pre-control active
From speed control configuration
p1400.7
[5490.7]
1 = Speed pre-control
for balancing
From the speed control
configuration
p1400.10
n_set smth
r0020
Monitoring
n_prectrl_2
[5030.1]
n before setpoint filter
from function generator
+
+
n after setpoint filter
from function generator
100 ms
0
1
t
x,y x
y
[2701.1]
r1170
n_ctrl setp sum
[3080.8]
Speed setpoint
+
+
<1> Low-pass, 2nd order:
Detailed representation at [1024].
<2> General 2nd-order filter:
Detailed representation at [1024].
<3> 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.
<4> The interpolator is only effective for clock-cycle synchronous
PROFIdrive operation and sign-of-life received from the master
(STW2.12 ... STW2.15).
<5> 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.
<6> The value is displayed correctly only with r0899.2 = 1 (Operation
enabled).
<6>
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