Siemens SINAMICS S120 Commissioning Manual page 207

Commutation angle outside the tolerance
Example: The falling edge of the sawtooth voltage (pole position angle) leads the zero
crossing of EMF phase U by approx. 18° electrical.
Figure 2-67
Adapt the incorrect commutation shown in the diagram above according to the Chapter
"Checking the angular competition offset (Page 194)".
p0431 = p0431 - 18
See also
Parameterizing a motor and encoder (Page 173)
Checking the angular commutation offset by making a measurement (Page 195)
Commissioning Manual
Commissioning Manual, (IH1), 01/2013, 6SL3097-4AF00-0BP3
2.13 Commissioning SIMOTICS 1FW6 built-in torque motors
Example of an incorrectly commutated drive
Commissioning
205