Lenze E94AxHE Servo Drives 9400 HighLine (Firmware 01-37) - Manual (Page 72)

9400 HighLine | Parameter setting & configuration
Motor interface
Initial commissioning | Set rotor displacement angle
72 Firmware 1.37 - 09/2006
L
Sequence
If all conditions are met, the motor is energised with a direct current corresponding to the
lower of the following two values:
r The rotor is aligned through the current flow. This is absolutely necessary for the
procedure.
r To ensure that the torque-neutral axis is not accidentally energised and the rotor stops,
a 45° current vector is (electrically) generated for 1 second and then (electrically)
switched back to 0° (≡ phase U).
– After this second, you could measure a direct current corresponding to the above-
mentioned value in this motor phase.
The next steps of the procedure depend on the feedback system used:
r If an absolute value encoder with Hiperface or EnDat protocol is used, the encoder
position is set to zero and the procedure is cancelled.
r If a resolver or an optical encoder without absolute track is used, the difference
between the preselected current angle and the mechanical rotor angle is determined.
After this, the current vector is (electrically) turned by another 22.5° and the difference
between current angle and rotor angle is determined once again.
– The procedure is repeated 16 times. This corresponds to one electrical revolution. The
machine rotates by 360° (mech.)/pole pair number.
– Take the average value of the 16 measurements to compensate for asymmetries.
After successful completion...
...the controller is inhibited automatically and the rotor displacement angle determined for
the activated feedback system is set in the corresponding subcode of C00058 .
r For a permanent acceptance of the set rotor displacement angle, the parameter set
must be saved ( C00002 = "11").
r The device command C00002 = "42" serves to deactivated the controller inhibit
automatically set by the procedure.
If an error occurs
If an error occurs during the procedure or the pulse inhibit gets active (e.g. due to short-
time undervoltage), the procedure is terminated with controller inhibit without making a
change in C00058 .
If the machine was braked or blocked during the procedure, this will be recognised at the
end of the measurement and no change is made in C00058 .
or
2 Rated device current ⋅
2 Rated motor current
2
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