Siemens SINAMICS S120 Function Manual page 161

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Table of Contents

12.Compare the deflection at the starting point of the measurement (2) with the deflection at the

end point of the measurement (3).

The following figure shows the measurement result. A guide line (1) is shown for the optical

alignment and aligned as reference line at the starting point (2) of the measurement.

– Result 1: You have set parameter p3096[0] correctly when the deflection at the starting

– Result 2: The holding brake is not strong enough when the deflection at the starting point

The following figure shows an example of the signal curve of the deflection when the brake

is too weak.

Drive functions

Function Manual, 06/2019, 6SL3097-5AB00-0BP2

Signal (red/top): Measuring current

Signal (blue/bottom): Deflection

Starting point of the measurement

End point of the measurement

Amplitudes of measuring currents 1 to 12 (p3093)

Measurement result: Determined deflection

point of the measurement (2) corresponds to the deflection at the end point of the

measurement (3).

of the measurement (2) differs significantly from the deflection at the end point of the

measurement (3). In this case, we recommend that you reduce the measuring current

step-by-step until the deflection at the starting point of the measurement corresponds to

the deflection at the end point of the measurement, or approximately. Only continue with

the next step when this has been ensured.

Servo control

5.16 Pole position identification