Siemens Sinamics S110 Function Manual page 154

Drive functions
7.1 Servo control
Operation without an encoder is displayed in parameter r1407.1.
Figure 7-18 Area switchover
Note
In closed-loop control operating mode "Speed controller without encoder", a rotor position
encoder is not required. Since a temperature monitor is not usually connected in this case
either, this must be parameterized via p0600 = 0 (no sensor).
Series reactor
When high-speed special motors are used, or other low leakage induction motors, a series
reactor may be required to ensure stable operation of the current controller.
The series reactor can be integrated via p0353.
Commissioning/optimization
1. Estimate the motor current p1612 on the basis of the mechanical conditions (I = M/kt).
2. Set Kn (p1470) and Tn (p1472) above I/f operation (> p1755). The load moment of inertia
3. Determine the load moment of inertia in the speed range above I/f operation (> p1755) by
152
should be set to zero here (p1498 = 0), since this deactivates part of the torque pre-
control.
setting p1498 via a ramp response (e.g. ramp time 100 ms) and assessing the current
(r0077) and model speed (r0063).
Function Manual, 01/2011, 6SL3097-4AB10-0BP3
Function Manual