NI9011 and NI9411 lost points from quadrature encoder

[STREAKSTREAK]

Hi! Were you founded 30mm/min? In attached image that I post, you can see at 100khz=12M/min. And more, the mechanic permissive speed is 30M/min.
Thanks for your help!


Regards,

Rúben Jerónimo

Software Developer
Streak, Automation Engineering

[srm@viewpointusa.com]

my mistake. you are correct.

so, what speed do you see incorrect readings?

[srm@viewpointusa.com]

how are you determining that you are missing edges?

[STREAKSTREAK]

Hi! I see incorrect measures at max speed. I cannot precise the specific speed, but is when I move the encoder really fast.
I know that I missing points because the encoder losses the reference point.
If u want tomorrow I can do a video to show you the problem.
Thanks for ur help!

Regards,

Rúben Jerónimo

Software Developer
Streak, Automation Engineering

[srm@viewpointusa.com]

how fast do you estimate you are moving the encoder when you see issues?

at 24m/min, that is 400 mm/sec.

since i have used this module at greater rates than you are trying to, i am still wondering if it is the encoder electronics instead of the module.

[STREAKSTREAK]

Hi Stu, thanks for your reply!

I estimate that i'm moving the encoder near max mech permissive speed (30M/min). Are you saying that maybe can be a encoder electronics problem/limitation? I have already tried with another encoder exacly like this and the results are same. Thanks for your help!

Regards,

Rúben Jerónimo

Software Developer
Streak, Automation Engineering

[STREAKSTREAK]

Hi everyone! I still without success. Anyone from NI can help me?

Regards,

Rúben Jerónimo

Software Developer
Streak, Automation Engineering