Siemens SINAMICS S120 Function Manual page 93

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).
U [V]
430 V
p1327
p1319
Fig. 3-16
Function diagrams for V/f control (see List Manual)
S 5300
Parameters for V/f control (see List Manual)
Adjustable parameters
S p0304[0...n]
S p0310[0...n]
S p0311[0...n]
S p0314[0...n]
S p0317[0...n]
S p0322[0...n]
S p0323[0...n]
S p0640[0...n]
S p1082[0...n]
S p1300[0...n]
S p1318[0...n]
S p1319[0...n]
Visualization parameters
S r0313[0...n]
© Siemens AG 2006 All Rights Reserved
SINAMICS S120 Function Manual, 03/2006 Edition
p1326
V/f characteristic
V/f control for diagnostics
Rated motor voltage
Rated motor frequency
Rated motor speed
Number of motor pole pairs
Motor voltage constant
Maximum motor speed
Maximum motor current
Current limit
Maximum speed
Open-loop/closed-loop control operating mode
V/f control ramp-up/ramp-down time
V/f control voltage at zero frequency
Number of motor pole pairs current (or calculated)
Operating Modes
Servo control
uf_kennlinie.vsd
f [1/s]
3-93