Allen-Bradley PowerFlex 527

Rockwell Automation Publication MOTION-UM003K-EN-P - January 2019 309
Out of Box Configuration for PowerFlex Drives Appendix B
Jerks for programmed moves, such as MAM or MCLM instructions, in units
of % time are converted to engineering units as follows:
If Start Speed < Programmed Speed
If Start Speed > Programmed Speed
Time
Velocity
Programmed Speed
Programmed Accel Rate
2
Programmed Speed
Accel Jerk (Units/Sec
3
) =
Programmed Decel Rate
2
Max (Programmed Speed, [Start Speed - Programmed Speed])
Decel Jerk (Units/Sec
3
) =
*
200
- 1
% of Time
)(
*
200
- 1
% of Time
)(
Decel Jerk
Accel Jerk
Programmed Speed
Time
Velocity
Programmed Speed
DecelJerk1
DecelJerk2
DecelJerk1 is used while Current Speed > Programmed Speed
DecelJerk2 is used while Current Speed < Programmed Speed
Programmed Decel Rate
2
Max (Programmed Speed, [Start Speed - Programmed Speed])
DecelJerk1 =
Programmed Decel Rate
2
DecelJerk2 =
*
200
- 1
% of Time
)(
*
200
- 1
% of Time
)(