I disagree entirely. what you are saying would mean we need a disconnect in front of a combination starter.
That is not what I am saying maybe I come across the wrong way.
Go back to tsamples post:
Most VFD's have an integrated disconnect. They use an separately fused wire to feed the computer portion so that there is no problem when power is cut. Using this method they can still soft stop the motors and prevent damage. I can't tell from your post, but check to see if the VFD does or does not have an integrated disco.
I mentioned (or at least meant) that
if the disconnect opens all the supply conductors it is a disconnect for the purpose of disconnecting the controller (VFD).
If it does not open all supply conductors it is nothing more than a control switch.
I don't see how in his example you could turn off the
disconnect and still soft stop the motor. Sure when you disconnect a drive from power it stays active until the capacitors on the DC bus are discharged - but that is with the motor stopped. If the motor is running those capacitors will not stay charged long at all. What he is describing can not be a disconnect.
I gave an alalogy to a combination motor starter.
An motor starter in an enclosure with an on off switch that only controls the coil of the magnetic contactor is the analogy to what is not a disconnect.