Commutation Angle And Pole Position Identification - Siemens SIMOTICS M-1FE1 Configuration Manual

Antifrogen N acts like a biocide for a minimum concentration > 20%.
● Conduct a water analysis at least annually to determine the type and concentration of
microbes.
The following microbes can occur in practice:
– Bacteria that cause the formation of slime
– Corrosive bacteria
– Bacteria that cause deposits of iron
● Add a biocide that counters the determined microbes to the cooling water.
The manufacturer's recommendations must be followed in regard to the dosage and
compatibility with any inhibitor used.
Maintenance and service for assembled motor spindles
Check at least once annually
● the filling level,
● for any discoloring and
● the cooling-water specification Information on this is provided in Chapter "Coolant
(Page 68)".
4.1.4

Commutation angle and pole position identification

Note
For synchronous spindles, the commutation angle must be determined or entered when
the spindle is first commissioned or when the spindle is replaced.
The stator magnetic field must be aligned to the rotor magnetic field for the optimum
torque development (synchronized).
This reference is established using a pole position identification routine (PLI) and
subsequently passing over the encoder zero mark. The commutation angle offset that is
determined is saved to the drive system.
SIMOTICS M-1FE1 synchronous built-in motors
Configuration Manual, 09/2019, A5E47872980B AA
Motor components, characteristics and options
4.1 Motor components
71