Siemens Sinamics s120 Commissioning Manual page 261
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- Function manual (1094 pages) ,
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Recording the phase voltage and the pole position angle using an oscilloscope
1. Switch the drive line-up into a no-current condition.
2. After the DC link has completely discharged, disconnect the motor cables from the
converter.
If motors are connected in parallel, then disconnect them.
3. Form an artificial neutral point using 1 kΩ resistors (for a parallel connection, for each
motor).
Image 3-85
4. Turn the rotor with the most constant speed possible in the clockwise direction. The rotor
is turning in a clockwise direction if, when viewing the DE flange, it rotates clockwise (see
also the "Determining the positive direction of the drive (Page 251)" figure).
Checking the phase sequence
For the positive direction of the drive, the phase sequence must be as follows:
EMF phase U - EMF phase V - EMF phase W
STARTER Commissioning Manual
Commissioning Manual, (IH1), 07/2016, 6SL3097-4AF00-0BP5
3.18 Commissioning SIMOTICS T-1FW6 built-in torque motors
Arrangement for measuring
Commissioning
261
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