Enable pins on Stepper driver, are they required?

[Neale]

The Huanyang VFD is controlled by the CSMIO and I have been assuming that this will stop on e-stop although I have not checked this. However, I do have a primary Pilz contact going spare and I could wire the VFD run signal via that for belt-and-braces. I have more-or-less finished the control box, apart from some small odds and ends, but the machine isn't quite at the same state. Once I have limit and e-stop switches fitted and wired, I shall be going through the safety functionality that I have. For example, I haven't yet checked the VFD braking characteristics and tuned things like deceleration.

When I say that safety is a compromise this is, obviously, I hope, tongue-in-cheek but we do have to be sensible about this. I am building a hobby machine for a home workshop, and not expecting idiot bystanders to wander by and poke fingers in it. However, I am also moving from the mark 1 built from MDF which is just about strong enough to stand up to its own weight(*) but would self-destruct in the case of any foul-up, to the mark 2 which is all welded steel, including gantry, and could do itself and anyone in its path serious damage. So, for example, accessible e-stops and limit switches all round, but no "open door" detector for the control box. Just trying to steer a sensible course between extremes.

(*) I exaggerate - in fact, it is not quite strong enough to stand up to its own weight...