Siemens SINAMICS S120 Manual De Listas página 2385

Current limit
p0640
I_act abs val
r0068
Pole pair number p
r0313[M]
<4> n_ctrl n_set
⋅
p n
=
[5030.8] r1438 f
60
⋅
[3050.6] p n
=
f
[3095.7]
60
U/f resonance damping
1
f_set_2
3.1 Hz 95 % x p1349
4.77 Hz p1349
f_outp
[6714.4] r0078
U/f T res damp
p1339 (20.00)
<1> The changeover to U/f control is represented at [5730.2].
<2> For p1349 = 0: Limit at 0.95 x f <= 45 Hz.
Mot N
<3> Max. ramp steepness is also influenced by Vdc controller (p1240
<4> For synchronous motors, only speed setpoints with up to approximate 25 % of the rated speed can be used in order to prevent any risk of resonant oscillation.
1 2
DO: SERVO
Servo control - U/f control for diagnostics
M_inertia total
Uf t_rmp-up_rmp-dn
r1493
M_max lower eff
<3> r1539
Max.
M_max upper eff ramp
Stop ramp-function
steepness
<3> r1538
generator
U/f t_rmp-up/-dn
0.000...999 999.000 [s]
p1318[D] (10.000)
f
max
(Synchronous
0
frequencies)
Safety ramp-function
generator for U/f control (as
stall protection)
U/f gain res damp
f/f
Mot N
p1338 (1.00)
<2>
–
+
0).
3 4
p1318
f_set_2
Pole pair number p
U/f char U4
0.0...10 000.0 [V]
p1327[D] (0.0)
U/f U at f=0 Hz
0.0...50.0 [V]
p1319[D] (0.0)
+
+
5
fp_5300_01_eng.vsd
14.11.13 V05.02.03
n_act smooth [rpm]
⋅
60 f
=
n
r0063
p
r0313[M]
Uq_set_3
<1>
U/f characteristic
U
f Ud_set_3
430 V
f
U/f char f4
0.00...10 000.00 [Hz]
p1326[D] (0.00)
f_outp
r0066
f_outp smooth
100 ms
r0024
F07801
Monitoring "Motor overcurrent"
(No automatic current limiting for U/f control)
6 7
Function diagram
SINAMICS S120
p0115[0] (125.00 µs)
[5730.1]
8
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