Commutation Angle And Pole Position Identification; Commutation Angle - Siemens Simotics M-1FE1 Series Hardware Installation Manual

Commissioning

7.4 Commutation angle and pole position identification

Measures on overshooting or undershooting the critical insulation resistance
If the critical insulation resistance is less than or equal to this value, then the windings must
be dried or, if the fan is removed, cleaned thoroughly and dried.
Note
Lower resistance
Note that the insulation resistance of dried, clean windings is lower than that of warm
windings. The correct insulation resistance must be achieved for a winding that has been
cooled down to room temperature (approx. 20° to 30° C).
Commission the motor only when the insulation resistance has achieved the specified
values.
7.4 Commutation angle and pole position identification
7.4.1

Commutation angle

Note
With 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 by a pole position identification (PLI) and the subsequent
traversing of the encoder zero mark. The associated determined commutation angle offset is
stored in the drive system.
Determining the pole position identification / commutation angle with STARTER for SINAMICS
1. Select the Motor Module and select the (closed-loop) control type "Speed control with
encoder".
2. Select the synchronous built-in motor in the motor selection list. Press the "Next" key.
3. Select the speed encoder (hollow shaft incremental encoder, 1 V
data" key.
4. The pole position identification routine provides coarse synchronization. A zero mark
exists in the encoder. When the zero mark traversed, the pole position can be matched
automatically with the zero mark position (fine synchronization). The zero mark position
must be electrically adjusted (p0431).
We recommend a fine synchronization (p0404.15 = 1). It prevents measurement
scattering and allows an additional test of the determined pole position.
5. Select the "Pole position identification" under coarse synchronization in the encoder data
mask.
126
). Press the "Enter
pp
1FE1 synchronous built-in motors
Hardware Installation Manual, 12/2016, 610.43000.40b