93
NTT 240/460
Operation mode
Installation and user guide
Rev: 4.0
6.13 Motor cogging torque compensation
Motor cogging compensation function lets to get a better accuracy during a torque control reference following.
Motor cogging mapping is valid:
•
only for rotative motors.
•
only for absolute encoder feedback or at least for incremental encoder with zero index (mandatory).
•
only for the motor on witch the procedure was performed; in case of motor replacement or encoder
rephasing, a new procedure launch is required.
Mapping procedure must be performed only via Caliper software, then the enabling and disabling function can
be reached also via fieladbus operation; before starting procedure, rotor must be free to rotate, so ensure to
disconnect the load.
Mapping procedure is shown below:
!
NOTES:
•
Advise against using motor cogging compensation during a speed or position control.
•
If motor cogging compensation is uded with incremental encoder feedback without ZERO index,
procedure will be aborted.
Содержание NTT 240
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