Siemens Sinamics S110 Function Manual page 148

Drive functions
7.1 Servo control
Commissioning V/f control
1. Verify the preconditions for V/f control mode.
2. Set p0311 → Rated motor speed
3. Set p1317 = 1 → activates the function
4. Activate the enable signals for operation
5. Specify the speed setpoint
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 7-15
Function diagrams (see SINAMICS S110 List Manual)
● 5300 V/f control
● 5650 Vdc_max controller and Vdc_min controller
Overview of important parameters (see SINAMICS S110 List Manual)
● p0304 Motor rated voltage
● p0310 Motor rated frequency
● p0311 Motor rated speed
● r0313 Motor pole pair number, actual (or calculated)
● p0314 Motor pole pair number
● p0322 Maximum motor speed
● p0323 Maximum motor current
● p0341[0...n] Motor moment of inertia
● p0342[0...n] Ratio between the total moment of inertia and that of the motor
146
V/f characteristic
Function Manual, 01/2011, 6SL3097-4AB10-0BP3
Function Manual