Checking The Linear Motor By Taking Measurements - Siemens SINAMICS S120 Commissioning Manual

Commissioning
2.13 Commissioning linear motors (servo)
2.13.6

Checking the linear motor by taking measurements

Why make measurements?
If the linear motor was commissioned according to the relevant instructions, and unexplained
fault messages still occur, then all of the EMF signals must be checked using an
oscilloscope.
Checking the phase sequence U-V-W
For primary sections connected in parallel, the EMF_U from motor 1 must be in phase with
the EMF_U from motor 2. The same is true for EMF_V and EMF_W.
It is absolutely necessary that this is checked by making the appropriate measurements.
Taking the necessary measurements
● Disconnect the drive line-up from the power supply.
● Notice: Wait until the DC link has been discharged!
● Disconnect the power cables from the drive.
● Form an artificial neutral point using 1 kOhm resistors.
Figure 2-39
144
Disconnect any primary components connected in parallel.
Configuration for taking the measurements
Commissioning Manual, (IH1), 01/2011, 6SL3097-4AF00-0BP1
Commissioning Manual