Pi/P Switching Using Speed Setpoint - Siemens SINAMICS V90 Operating Instructions Manual

● Speed control mode
Parameter settings
Parameter Value range
p29140 0 to 5
p29120[0] 0 to 999999
p29121[0] 0 to 100000
Timing diagram
9.9.3

PI/P switching using speed setpoint

When the speed setpoint exceeds the preset speed value (p29142), the speed loop is
switched from PI control to P control.
Parameter settings
Parameter Value range
p29140 0 to 5
p29142 0 to 210000
p29120[0] 0 to 999999
p29121[0] 0 to 100000
Note
For detailed information about speed setpoint, refer to "Configuring speed setpoint
(Page 198)".
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 09/2016, A5E36037884-002
Signal Pin assignment
G-CHANGE To be assigned
Setting value
2
0.3 (default)
15 (default)
Setting value
3
2000 (default)
0.3 (default)
15 (default)
Setting
0 The first group of gains is selected.
1 The second group of gains is selected.
Unit
- Switches PI control to P control using an external digital
input signal (G-CHANGE)
Nms/rad Speed loop gain 1
ms Speed loop integral time 1
Unit
- Switches PI control to P control using speed setpoint.
rpm Speed threshold for automatically triggering PI to P
switch.
Nms/rad Speed loop gain 1
ms Speed loop integral time 1
9.9 PI/P switching
Description
Description
Description
Tuning
281