Control.com - Nerds in Control

Hi,

If an encoder is use to regulate the speed of a motor with a vector drive instead of controlling
it in the open loop mode, does the affect the deceleration.

I mean, can we get faster deceleration?

I would say you should be able to get a more precise - more controlled deceleration... not necessarily faster... you could set the output of an open-loop drive to 0V-0Hz and it will try to stop as fast as it can.

The problem you may have is dissipating the energy that is regenerated. If it is doing this stopping starting all day, these days you will want to find a way to recycle that energy through a regen or active front end unit, DC bus load sharing, etc. If it only does it once a blue moon (i.e. e-stop condition) then a db resistor would be fine.

Follow the manufacturer's guidelines.