help with stepinfo timmings

I have a servo drive (driven with differential signals & step dir) that gives a diagram with timings but i can not understand it
here is the manual at page 17 has the timings
www.vitalsystem.com/portal/cnc/motor_and..._AC_Servo_Driver.pdf
what values must insert in pncconf wizard ?






Can someone help me ?

Is possible to find someone without info from the manufacturer the optimal step on-time / step space / direction hold and direction setup ?
Is there any standard procedure of trial and error to find these timings ?
If i set to high values like 5000ns i have speed drop if i set to low motor does not work.

Your chart you posted has all the info you need
th = Step on time (1000ns)
tl = Step space (1000ns)
ts = Direction setup (1000ns)
Direction hold isn't expressly given, but I would assume 1000ns

If those don't work for you try doubling them, and if you still have trouble, check wiring for noise and voltage problems.

I have tested with 1000ns but losses steps.
1500ns is ok don't loose steps but i can't get speed 3000rpm (i get 1950rpm without errors) is any solution for this ?
Iam thinking electronic gearing or drive them by analog -10v +10v in speed mode with mesa 7i33TA
what is you opinion about analog driving is easy to tune the PID in linuxcnc ?

What mesa hardware do you have now?

What are your steps/rev?

i have mesa 5i24
steps/rev ?

500khz=500000z
T=1/f => 1/500000=2μs period
T=step on + step space

Your drive can accept a signal at a rate up to 500khz, but at that rate you should be able to achieve 3000rpm with up to 10000 steps/rev. (You still haven't told us your steps/rev.) The 5i24 should be able to generate steps rates several times faster than 500khz. Hardware step generation doesn't have anything to do with servo period length (or the base thread).

Or were you using Linuxcnc's software stepgenerator instead of the hardwarestepgen?

no iam using mesa 5i24 step generator and yes to get full speed 3krpm i need 10k steps/rev
but i can not get full speed with 1500ns timmings i get only 1950rpm without errors

Maybe it is a TTL voltage problem, the 5i24 only has a 3.3v signal, perhaps this is a marginal voltage level for your drivers?
Do your drives accept differential signaling?
Perhaps Peter could recommend a better daughter card to handle the signal levels your hardware requires?

I would suggest a 7I52S for a differential step/dir + encoder interface

Note that you can get 5V signals out of a 5I24 driving OPTOs if you connect the OPTO LED anode to 5V
and use active low drive