Checking The Commutation Angle Offset With Starter - Siemens Sinamics s120 Commissioning Manual

Making parameter entries / commutation setting
Incremental measuring system
1. Activate automatic determination of the commutation angle offset with p1990 = 1.
Alarm A07971 is output while the commutation angle offset is being determined.
2. Set the drive enable signals (OFF3, OFF2, OFF1).
This results in coarse synchronization. A successful coarse synchronization is indicated
by the parameter r1992.9.
3. Move the drive over the zero mark.
When the drive moves over the zero mark, the angular commutation offset is entered into
p0431. p1990 is automatically set to 0 after the angular commutation offset has been
determined. Alarm A07965 is displayed as a prompt to save the change in a non-volatile
fashion.
Absolute measuring system
Set p1990 = 1 before activating the enable signals.
By activating the enable signals, the angular commutation offset entered into p0431 and
p1990 is automatically set to 0. Alarm A07965 (N) is displayed as a prompt to save the
change in non-volatile storage.
3.13.6.1

Checking the commutation angle offset with STARTER

Note
Coarse synchronization means that the pole position identification has been carried out, but
the drive has not yet been moved over the zero mark. After the drive has been moved over
the zero mark, the drive is finely synchronized. Fine synchronization is omitted when an
absolute measuring system is being used, because the drive is always fine synchronized
after being switched on. A coarse synchronization is required only for the initial
commissioning for the commutation angle offset determination (p0431).
STARTER Commissioning Manual
Commissioning Manual, (IH1), 07/2016, 6SL3097-4AF00-0BP5
3.13 Commissioning of SIMOTICS L-1FN3 linear motors
Commissioning
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