Siemens SINAMICS S120 Function Manual page 195

Drive functions

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Step 2: Determine the voltage precontrol in several optimization runs

1. To activate voltage precontrol, enter a value of "100" into p1703.

2. Proceed as follows to determine the dead time of the current controller reference model:

– Activate p0340 = 4, and automatically calculate the closed-loop control parameters.

– Perform a One-Button-Tuning (Page 116) with p5271.4 = 1 and p5271.7 = 1

3. Measure a current controller setpoint step and correct the value p1703.

– Repeat the current controller setpoint step until the current actual value reaches the

Drive functions

Function Manual, 11/2017, 6SL3097-4AB00-0BP5

(p5300 = 1).

setpoint without any overshoot or undershoot (see the following sample displays).

Voltage precontrol p1703 too low

Servo control

4.21 Voltage precontrol

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