How I can get my encoder position from RPM to mm/sec?

[RavensFan]

Hummer,

Your link to "More about calculator" gives an Error 403 forbidden error.

[AnalogKid2DigitalMan]

Well, the manuafacter knows 🙂

http://www.newall.com/PDFs/SHG%20PV%20&%20PC%20Datasheet%20023%2081030-USA%20Version.pdf

Resolution of the A/B channels is 1um (0.001mm). There is a Z channel reference mark every 12.7mm. The outputs are open collector so you may need a pullup resistor for the channels, check the motor controller or drive manuals, it may show how to wire them up.

-AK2DM

[Uli21]

Hi, 

I am using it without a pull up resistor. Why do I need one? It seems that it works without also. Is it for safety issues or noise?

Thanx for the previous ideas! 

[AnalogKid2DigitalMan]

If it works then the hardware probably has internal pullup resistors built in- I did not reference the manual.

-AK2DM

[Hummer1]

If it says that the output is open collector, you should add a pull up resistor of the proper size.

Here is a circuit note about that from wiki.  And, Yes, it is a noise and proper operation issue.

http://en.wikipedia.org/wiki/Open_collector

Hummer1

[Uli21]

Thanks, for the fast reply.

The manual of the UMI 7764 says, that have to use a 2.2 kOhm resistor as pullup.

So, it works but for proper operation I will use the resistor.

Thanks