Siemens SINAMICS V90 User Manual

Tuning
9.9 PI/P switching
SINAMICS V90, SIMOTICS S-1FL6
338 Operating Instructions, 04/2019, A5E36037884-007
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
Setting value
Unit
Description
p29140
0 to 5
3
-
Switches PI control to P control using speed setpoint.
p29142 0 to 210000 2000 (default) rpm Speed threshold for automatically triggering PI to P
switch.
p29120[0]
0 to 999999
0.3 (default)
Nms/rad
Speed loop gain 1
p29121[0]
0 to 100000
15 (default)
ms
Speed loop integral time 1
Note
For detailed information about speed setpoint, refer to "
Configuring speed setpoint
(Page
256)".
9.9.4
PI/P switching using acceleration setpoint
When the motor acceleration exceeds the preset acceleration rate (p29143), the speed loop
is switched from PI control to P control.

Siemens SINAMICS V90 Specifications

General

Power Range	0.05 kW to 7.0 kW
Protection Class	IP20
Communication	USS/Modbus RTU
Feedback	Incremental encoder
Input Voltage	1AC 200 V to 240 V, 3AC 380 V to 480 V
Control Modes	Position, Speed, Torque
Operating Temperature	0 °C to +40°C
Storage Temperature	-40°C to +70°C
Relative Humidity	5% to 95% (non-condensing)
Altitude	Up to 1000 m above sea level