Siemens SINAMICS G120 List Manual page 702

Current limiting
U_output max [Vrms]
[6838.4]
[6839.4]
r0071
Current limit
p0640 [D]
I_max reduction
[8016.8]
I_max PM
[6841.4]
[6842.4]
Id_setp total [Arms]
[6836.8]
[6838.8]
r1624
n_act [rpm]
r0063 [0]
M_max upper
p1522 [C]
M_max upper [Nm]
(1520[0])
p1520 [D] (0.00)
M_max upper scal
p1528 [C]
M_max upper scal
-2000.0 ... 2000.0 [%] (1524[0])
p1524 [D] (100.0)
M_max lower
p1523 [C]
M_max lower [Nm]
(1521[0])
p1521 [D] (0.00)
M_max lower scal
p1529 [C]
M_max lower scal
(1525[0])
-2000.0 ... 2000.0 [%]
p1525 [D] (100.0)
P_max gen
-100000.00 ... -0.01 [kW]
p1531 [D] (-0.01)
P_max mot
0.00 ... 100000.00 [kW]
p1530 [D] (0.00)
!
<1> Danger: Negative values at <1> represent a minimum torque for the other torque direction and
can cause the motor to accelerate uncontrollably.
<2> positive values at <2>
1 2
Vector control, Dynamic Drive Control
Current/power/torque limits (p0096 = 2)
Mot L_leak total [mH]
r0377 [D]
Iq stall
calculation
I_outp max [Arms]
r0067
[6837.1], [6839.1]
Iq_max total [Arms]
x
Min
2 2
x y
-1
y
Max Min
! Isq_max stall [Arms]
<1>
Isq_max stall [Arms]
!
<2>
Iq
n
Power limiting
3 4
Speed limiting
Kp from speed controller [6824.5]
Tn from speed controller [6824.6]
n_limit pos eff [rpm]
[3050.8] r1084
[3050.8]
r1087
r1533 n_limit neg eff [rpm]
M_max up w/o offs [Nm]
r1548 [1]
r1526 [6826.1]
Lower limit
M
[6836.8]
[6841.1]
Iq
[0]
r1548
Upper limit
r1527 [6826.1]
M_max low w/o offs [Nm]
<3>
Min
Max
<3>
<3> Intervention by the Vdc controller.
<4> Intervention when the speed limit is exceeded + 2 % n_rated.
5
fp_6828_97_56.vsd
09.12.2015
1 = Speed limiting control
+
+
– –
Speed limiting
controller
<4>
Sign
+ or -
+
Min
+
+
Max
+
6 7
Function diagram
G120 CU240B/E-2
V4.7.6
active
r1407.17
[2522.3]
M_max upper eff [Nm]
r1538
[6824.4], [6826.1]
M_max lower eff [Nm]
r1539
[6824.4], [6826.1]
Isq_max [Arms]
r1536
[6832.1]
Isq_min [Arms]
r1537
[6832.1]
8
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