Need guidance on E-stop/Disconnect Switch connections

tommylight wrote:

Sorry for failing to find a better way to explain that, but sometimes it takes a kick in the b#tt from someone, thank you Andy, to realize that.
As soon as i read Andy's reply, it dawned on me that i could do it better, i hope:
--Take a battery, 1.5V or 3.7V or 12V and
-wire it to any stepper motor wires = it will not spin, made to work with pulses
-wire it to 3 phase motors = do not spin, made to work with pulses
-wire it to Brushed DC = they spin as they are made to work like this.
-- No matter how much DC voltage you push through the first two, they do not spin, they will burn, but not spin.
-- All drives, be it AC or DC powered ones will convert to DC and the output stages on all types of drives work under DC power, so when they fail the output will be DC power
-- From the above it is easy (yeaaah riteee ) to conclude that the first two types have no way of moving when output transistors fail, so require less safety features.
Is this a better explanation?
Feel free to critique when i mess up explanations, i would really appreciate that.
Thank you.

I can tell you from someone who know very little about this, that makes perfect sense. Thanks for the detailed explanation.