C axis mode slow

[dzrong]

Hello EveryOne,

 

Why my C axis run so slow,only 20 block per second,

The unit of C is degree.

Coord[1].AltFeedRate=1000000

Motor[3].MaxSpeed=1000

Coord[1].PosRollover[2]=-360

 

 

Here is the program:

 

&1#1->1000000X-30000000

&1#2->1000000Z-30000000

&1#3->C

//

 

open prog 4

// --------------------User Code Goes Here------------------------

linear

abs

ta 1

ts 0

tm 1

 

C 0.01

C 0.02

C 0.03

C 0.04

C 0.05

C 0.06

C 0.07

C 0.08

C 0.09

C 0.1

C 0.11

C 0.12

C 0.13

C 0.14

C 0.15

C 0.16

C 0.17

C 0.18

C 0.19

C 0.2

C 0.21

C 0.22

C 0.23

C 0.24

C 0.25

C 0.26

C 0.27

C 0.28

C 0.29

C 0.3

C 0.31

C 0.32

C 0.33

C 0.34

C 0.35

C 0.36

C 0.37

C 0.38

C 0.39

C 0.4

C 0.41

C 0.42

C 0.43

C 0.44

C 0.45

C 0.46

C 0.47

C 0.48

C 0.49

C 0.5

C 0.51

C 0.52

C 0.53

C 0.54

C 0.55

C 0.56

C 0.57

C 0.58

C 0.59

C 0.6

C 0.61

C 0.62

C 0.63

C 0.64

C 0.65

C 0.66

C 0.67

C 0.68

C 0.69

C 0.7

C 0.71

C 0.72

C 0.73

C 0.74

C 0.75

C 0.76

C 0.77

C 0.78

C 0.79

C 0.8

C 0.81

C 0.82

C 0.83

C 0.84

C 0.85

C 0.86

C 0.87

C 0.88

C 0.89

C 0.9

C 0.91

C 0.92

C 0.93

C 0.94

C 0.95

C 0.96

C 0.97

C 0.98

C 0.99

C 1

 

close

[bradp]

check

motor[].invAmax

motor[].invDmax

motor[].invJmax

[Clopedandle]

As bradp suggests, set those parameters properly (the defaults likely are not what you seek). You may consider setting both ta 0 ts 0 such that InvAMax and InvJMax dictate acceleration duration instead. I'm assuming you chose ta 1 pretty arbitrarily.

[steve.milici]

Also check this application note on the FileDepot:

"http://forums.deltatau.com/filedepot/download.php?f=Power PMAC/Application Notes/Why Is My Move Too Slow 2016-05.pdf"

[curtwilson]

Clopedandle:

 

If you set both TA and TS to 0, there is no acceleration profile to compare to the limits, so InvAmax, InvDmax, and InvJmax are not effective. So the OP's setting of TA=1 was likely not arbitrary.

[Clopedandle]

My mistake; I thought I remembered it working like that.

[StephenJ]

Hi dzrong,

Is your Motor[3].PosSf set up so your motor is in degrees? The CS definitions shows 1 motor unit/degree, and you are moving in increments of 1/100 of degree.