Copley Controls 7228AC, Руководство пользователя

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7XX8 Series Digital Servo Amplifier User Guide
3-29
Algorithmic Phase Initialization
For motors that have quadrature encoders and no Hall
sensors, algorithmic phase initialization can be used to
initialize the phase for commutation.
Prerequisites
•
Amplifier configured for motor, either by downloading
an amplifier file filename.cca or applying calculated
values using a motor data file filename.ccm .
•
Motor connected to amplifier. When using a new
vendor motor, the Encoder Checking and Auto
Phasing routines should be executed to establish
proper phasing.
•
Values for current loop gain terms P and I are
calculated or configured.
General Rules
•
Algorithmic phasing should only be used if it is known
that the motor is free to move in both directions, and
that a brief uncontrolled move can be tolerated by
the motor, mechanism, and load. (If this extra
motion is not desired then use Hall sensors and Hall-
based phase initialization.)
•
Use caution if connecting a load.
•
The Phase Init Time is used to set the duration of
the phase initialization algorithm. The value used
during auto phasing is sufficient. If set too fast,
then improper phasing may result.