Siemens SINAMICS S Series List Manual page 1368

Controller, modulation depth reserve
<1>
Modulation depth
r0074
[8950.4]
P3481
Res_ctrl dyn
Vdc Z_set
p3511
+
Vdc setpoint
300.00...1600.00 V
<2>
+
p3510 (600.00)
Vdc_act
r0070
[8950.1]
Controller DC link voltage
<1> This controller increases (boosts) the DC link voltage when the modulation depth limit has been reached (p3480).
<2> When the pulses are enabled, the DC link voltage is ramped (p3566) from the actual value to the setpoint p3510.
<3> Applies only if the " Master/slave" function module is activated (r0108.19 = 1).
1 2
DO: A_INF
Active Infeed - Controller modulation depth reserve / controller DC link voltage (p3400.0 = 0)
mod_depth limit
p3480
–
+
Res_ctrl outpt
r3485
Kp
p0280
p3560
Vdc_max stat
[8960.7]
Kp
+
+ +
–
Vdc_ctrl I_comp
Vdc setpoint
r0088
[8964.6]
[8948.8]
<3>
3 4
Power pre-control
pre-control P scal
p3521[0]
pre-control P
p3520[0]
(0)
+
P
+
pre-control P
p3520[3]
(0)
p3521[3]
pre-control P scal
1,5
U_line supply calculated
[8950.4]
Tn
p3562
p3400.3
Tn
1
1
0
0
0
1
<3> [8948.6]
r3554
r0108.19
Close U_contr oper
0
p3513
&
1
I_suppl active
p3515
5 6
fp_8940_01_eng.vsd
23.01.07 V02.05.00
p0115[0] (250.00 µs)
I = P/U
I_distr_factor
p3516
I_limit mot
p3530
Iq_set
+
r0077
+
+ [8946.1]
P3531
I_limit regen
I_active ctrl set
r3517
+
I_suppl_active stat
p3514
+
7
Function diagram
SINAMICS S
8
- 8940 -