Technical data

Drive functions
7.1 Servo control
Function Manual
Function Manual, 06/2012, 6SL3097-4AB10-0BP4
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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
should be set to zero here (p1498 = 0), since this deactivates part of the torque pre-
control.
3. Determine the load moment of inertia in the speed range above I/f operation (> p1755) by
setting p1498 via a ramp response (e.g. ramp time 100 ms) and assessing the current
(r0077) and model speed (r0063).
Function diagrams (see SINAMICS S110 List Manual)
● 5050 Kp_n-/Tn_n adaptation
● 5060 Torque setpoint, control type switchover
● 5210 Speed controller