7.8.1 IENCC(1) method
Image 7.38: “Auto commutation IENCC(1)” screen
MOOG
ID No.: CB40859-001 Date: 11/2020
MSD Servo Drive - Device Help
158
7 Control
In this method the rotor aligns in the direction of the injected current and thus in a
defined position. The relatively large movement (up to half a rotor revolution) must
be taken into consideration. This method cannot be used near end stops or limit
switches! For the injected current it is recommended to use the rated current I
rated
.
The time should be set so that the rotor is at rest during the measurement. For
control purposes, the commutation process can be recorded with the Scope function.
NOTE
l
Inexperienced users should always choose the rated motor
current (amplitude) as the current and a time of at least 2000 ms.
l
If the axis is blocked, meaning the rotor is unable to align itself, the
method will not work correctly. As a result, the commutation angle
will be incorrectly defined and the motor may perform uncontrolled
movements.
l
When calculating the data sets of linear motors the values for time
and current adjust automatically.
