Siemens SINAMICS S120 Commissioning Manual page 167

Definition of channels (Ch1 ... Ch4):
● Ch1 EMF phase U to neutral point
● Ch2: EMF phase V to neutral point
● Ch3: EMF phase W to neutral point
● Ch4: Normalized electrical angular pole position via analog output
Figure 2-41 Setting of the measuring socket T0 on CU320
When the drive is synchronized, the difference between the EMF/phase U and the electrical
rotor position is a maximum of 10°.
If the difference is greater, the commutation angle offset must be adjusted.
Commissioning Manual
Commissioning Manual, (IH1), 01/2013, 6SL3097-4AF00-0BP3
2.12 Notes on commissioning linear motors
Commissioning
165