Siemens SINAMICS S120 Function Manual page 89

V/f characteristic
The speed setpoint is converted to the frequency specification taking into account the
number of pole pairs. The synchronous frequency associated with the speed setpoint is
output (no slip compensation).
Figure 3-15
Function diagrams (see SINAMICS S120/S150 List Manual)
● 5300 V/f control for diagnostics
Overview of important parameters (see SINAMICS S120/S150 List Manual)
● p0304[0...n] Rated motor voltage
● p0310[0...n] Rated motor frequency
● p0311[0...n] Rated motor speed
● r0313[0...n] Motor pole pair number, actual (or calculated)
● p0314[0...n] Motor pole pair number
● p0317[0...n] Motor voltage constant
● p0322[0...n] Maximum motor speed
● p0323[0...n] Maximum motor current
● p0640[0...n] Current limit
● p1082[0...n] Maximum speed
● p1317[0...n] V/f control diagnostics activation
● p1318[0...n] V/f control ramp-up/ramp-down time
● p1319[0...n] V/f control voltage at zero frequency
● p1326[0...n] V/f control programmable characteristic frequency 4
● p1327[0...n] V/f control programmable characteristic voltage 4
Drive functions
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
V/f characteristic
Servo control
3.9 V/f control for diagnostics
89