steveneads Posted July 22, 2016 Posted July 22, 2016 We have had some difficulty with Motor[x].PhasePosSf when converting UMAC code to PPMAC. It seems that the description under Ixx70 on p1416 of the PPMAC Reference Manual "Set PhasePosSf = 256/(Ixx71/Ixx70) for compatible operation" is incorrect. This yields: 256 * commutation cycles per rev / counts per rev I believe that the description for Motor[x].PhasePosSf (p464) is correct. This yields: 2048 * commutation cycles per rev / (256 * counts per rev) Clearly there's a scaling mix up.
Richard Naddaf Posted July 22, 2016 Posted July 22, 2016 Read the description (expression) in the Brick manual
Omron Forums Support Posted July 25, 2016 Posted July 25, 2016 Thanks for pointing that out. Are you referring to the Turbo to Power I-var equivalents table near the end of the Software Reference manual? You gave a different page number than the current manual has (page 1416 versus 1295).
steveneads Posted July 26, 2016 Author Posted July 26, 2016 I was referencing your manual 050-PRPMAC-0S0 dated April 11, 2016 - page 1416. Page 1295 in this manual refers to "Mathematical Feature Specification". Is this manual now out of date?
Omron Forums Support Posted July 27, 2016 Posted July 27, 2016 No, I am the one with the out of date manual. Probably, the best description is in the Power Brick Ac manual under the "On-going Phase Position" heading (p.125), as Richard referred a few posts back.
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