Which Spindle Encoder

More
01 Nov 2020 04:44 #187985 by BlueChicago
I'm trying to determine which is the best spindle encoder to use.

I already have an Omron E6B2-CWZ1X @2000 P/R. The documentation for which, shows a maximum response frequency of 100kHz.

I am using a Mesa 7i76e connected to a Raspberry Pi 4 with LinuxCNC installed following John Thornton's instructions.

I'm hoping for a maximum spindle speed 2400 rpm.

For example, based on 2400 rpm, and what I have gathered from other threads here: 40 rpm x 8000 ppr = 320kHz.

Do I assume a quadrature count per revolution when using this equation?
If so, at a max frequency response rating of 100kHz, does that mean that the encoder can't keep up?
Are there other bottlenecks that I need to watch out for?

Thanks for helping me out.

-Loren

Please Log in or Create an account to join the conversation.

More
01 Nov 2020 04:57 #187987 by BeagleBrainz
Replied by BeagleBrainz on topic Which Spindle Encoder
According to the data sheet
3. The maximum electrical response speed is determined by the resolution and maximum response frequency as follows:
Maximum electrical response speed (rpm) = (Max Response Frequency / Resolution) x 60

This is found at the bottom of page 2:

Hopefully this is the correct data sheet:
www.farnell.com/datasheets/2693580.pdf
The following user(s) said Thank You: BlueChicago

Please Log in or Create an account to join the conversation.

More
01 Nov 2020 05:18 #187990 by BlueChicago
Replied by BlueChicago on topic Which Spindle Encoder

According to the data sheet
3. The maximum electrical response speed is determined by the resolution and maximum response frequency as follows:
Maximum electrical response speed (rpm) = (Max Response Frequency / Resolution) x 60

This is found at the bottom of page 2:

Hopefully this is the correct data sheet:
www.farnell.com/datasheets/2693580.pdf


(100,000 / 2000) * 60 = maximum 3000 rpm

I hope I have this right.

Thank you

Please Log in or Create an account to join the conversation.

Moderators: piasdom
Time to create page: 0.206 seconds
Powered by Kunena Forum