wonderwizard

Steadily more confused.... http://www.deltatau.com/manuals/pdfs/TURBO%20SRM.PDF page 130 "A commutation cycle, or electrical cycle, consists of two poles (one pole pair) of a multiphase motor." So I have 6 pole pairs, electrical cycle = 360 / 6 = 60degrees I did have for my LV config: Ixx70 = 6 Ixx71 = 2097152 ; this is a full revolution in counts I now think I need: Ixx70 = 6 Ixx71 = (2097152 /360) * 60 The Geobrick LV manual seems to agree with this, page 170 http://www.deltatau.com/manuals/pdfs/GEO%20BRICK%20LV.pdf I would greatly appreciate anyone sanity checking that for me please.

I would like to check my understanding of Ixx72 in relation to commutation of a brushless motor. I have a three phase brushless motor with 12 poles. Reading the SRM 683 or 1365 is typical for a three phase motor. ie 360/3 = 120degrees However I am unsure whether because I have a high pole count motor the phase angle is smaller, 60 degrees? 12 poles 6 pole pairs 360 / 6 = 60 degrees Cheers,

Hello, I have a Turbo PMAC LV driving a (Motor 1) Stepper Motor with high resolution linear encoder, and some inherited code. I am struggling to determine if the Author is trying to drive the stepper closed loop as a high pole count brushless motor? or as a direct micro stepped stepper. Reading around it looks like the Author might be trying to do a bit of both? In particular the following ref http://forums.deltatau.com/attachment.php?aid=179 seems to disagree with the motor protection bits in PLC 6. The axis (Motor 1) is a Sanyo 1.8 degree 2 phase stepper, driving a ball screw stage, the encoder is a linear tape type with quadrature outputs. It could well be that since the Geo Brick LV Setup Assistant now supports steppers as 'high count pole-pair brushless motors" then whatever way was being done could be improved? Although looking at the spreadsheet I am confused about if I should select stepper or brushless for Cell B13? Regards, Chris Forum_edited.txt