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Commutation is the means by which a servo drive controls the torque of a motor by determining the position of the motor and applying current to the appropriate motor phases.  If the rotor position of the motor is not determined correctly or the motor power phase wires are wired to the wrong terminals, the drive will apply current to the wrong phase at the wrong time (or at the wrong rotor position).  This will cause the motor to run away or lock up.

Commutation is the means by which a servo drive controls the torque of a motor by determining the position of the motor and applying current to the appropriate motor phases.  If the rotor position of the motor is not determined correctly or the motor power phase wires are wired to the wrong terminals, the drive will apply current to the wrong phase at the wrong time (or at the wrong rotor position).  This will cause the motor to run away or lock up.

Finding the correct value for HALLOFFSET in the PC800 servo drive

Follow this procedure:

Set Hallofffset to a value.
NVSAVE, power cycle.
Set Commenbl = 0.
Enable drive.
Record Encpos.
Increase Commoff by 20 deg.
Encpos should increase by an equal amount.
If it is a different amount, change Halloffset and restart the procedure.
Decrease Commoff by 20 deg.
Encpos should decrease by an equal amount.
If it is a different amount, change Halloffset and restart the procedure.

ASCII - Command FBTYPE    
Syntax Transmit FBTYPE [Data]    
Syntax Receive FBTYPE <Data>

Chokes are inductive components in the electrotechnics and are used for interference suppression, commutation, energy storage and current limitation.

One of the basic functions in the drive of a brushless servomotor is the commutation. The commutation is the current transition of one winding of the motor to the next winding. Only in case of a correct commutation time respectively a correct commutation angle there is correct synchronism of the motor with perfect efficiency and minimum thermal load.
There are different possibilities to evaluate and adjust the commutation angle (parameter MPHASE).