The sqDrivePhaseFind Utility is used to perform a Phase Finding routine on a Drive.
Servo drives need to know the electrical angle of the shaft so that they can commutate the motor correctly. If the electrical angle is not known correctly this will result in a reduction of the available
torque, the addition of a static bias to the torque and possibly an inversion of the torque's polarity. The electrical angle is available directly if a resolver, commutating encoder or absolute encoder is used. However in certain circumstances only an incremental position measurement is available and it is necessary to carry out a process of determining the electrical angle, i.e. "phase finding".
The a drives phase finding routine is interfaced through three routines in the MPI.
mpiMotorPhaseFindStart(...)
mpiMotorPhaseFindStatus(...)
mpiMotorPhaseFindAbort(...).
See Also: Motor Phase Finding
Usage
At the command line, type one of the following options:
ex: D:\WIP\04.00.00\Win32>sqDrivePhaseFind
| -? |
Help |
| -control # |
Controller number (default = 0) |
| -server # |
Name or IP address of the host running server.exe |
| -port # |
TCP/IP port on the host computer (default = 3300) |
| -trace # |
Bit mask to specify trace information outputs. |
| -motor # |
Motor number associated with the drive. |
| -drive # |
Drive offset |
| -node # |
SynqNet node number |
Examples
D:WIP\04.00.00\Win32>sqDrivePhaseFind -motor 2
D:WIP\04.00.00\Win32>sqDrivePhaseFind -node 0
D:WIP\04.00.00\Win32>sqDrivePhaseFind -drive 0 -node 2
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