I have a motor that runs between 3 to 3000 RPM. The drive update time is 2.2 micro seconds. What is appropriate an encoder resolution for this work (especially for lower speeds) so the drive could update the motor at each 2.2 micro second without missing signals and instability?

Is there anyway that I demand to update data at longer time (more than 2.2 micro seconds) by same drive?
here is the part of a white article written by siemens group. I did my calculation based on this.

[![enter image description here](https://i.stack.imgur.com/VhsaH.png)](https://i.stack.imgur.com/VhsaH.png)

and the results of my calculation are as shown below
[![enter image description here](https://i.stack.imgur.com/dYDgt.png)](https://i.stack.imgur.com/dYDgt.png)

here is the drive specifications
[![enter image description here](https://i.stack.imgur.com/VhL8g.png)](https://i.stack.imgur.com/VhL8g.png)