Vdc Control - Siemens SINAMICS S120 Function Manual

Operating Modes
Vector control
These cyclical values, therefore, limit the torque setpoint at the speed controller
output/torque input and indicate the maximum torque currently possible. If the tor-
que setpoint is limited in the Motor Module, this is indicated via the following dia-
gnostic parameters:
S r1407.8
S r1407.9
Function diagrams for torque setpoint limitation (see List Manual)
S 6060
S 6630
S 6640
3.2.9

Vdc control

Description
Vdc_max
Vdc_max on_level
r1242
-
Vdc_act
r0070
+
Vdc_min on_level
r1246
Vdc_act +
r0070
-
Vdc_min
Fig. 3-37 Vdc control vector
3-142
Upper torque limit active
Lower torque limit active
Torque setpoint
Upper/lower torque limit
Current/power/torque limits
Vdc_ctrl Tn
Vdc_ctrl Kp
p1250
Vdc_ctrl config
p1240
1,3
0
0,2
Vdc_max dyn_factor
Vdc_ctrl Tn
Vdc_ctrl Kp
p1250
Vdc_ctrl config
p1240
0
2,3
0,1
Vdc_min dyn_factor
p1251
Vdc_ctrl t_deriv.
p1252
Vdc_ctrl output
p1243
p1251
Vdc_ctrl t_deriv.
p1252
p1247
© Siemens AG 2006 All Rights Reserved
SINAMICS S120 Function Manual, 03/2006 Edition
Control ZSW 1
1
r0056
r0056.14
0
r1258
Iq_set
Limit
Control ZSW 1
1
r0056
r0056.15
0