Thank you kindly Clive, and Jazz for confirming I'm not an idiot for that setup lol

next issue is connection of safety relay and CSMIO e-stop and HV enable. to anyone familiar with the CSMIO maybe they shed a light on this, I would highly prefer to use the HV_Enable option to start up the contactor and power on the machine. I do this at the moment and is working nicely (aside from contactor issue above) but doing it like this at the moment:

HV Enable -> Safety Relay -> Contactor

safety relay is configured with E-Stop and in the future also with reset button

this works fine but I would also like to have input to the CSMIO that E-Stop was pressed (or generally safety relay disconnected) but with my current setup I can't do that because the HV enable depends on E-Stop input so it's like a racing condition and within milliseconds HV enable turns on and off immediatly due to E-Stop input not up in time ( and never would be of course ) . I feel stupid for trying this.

so is there a possible solution to have both HV_enable and E-stop, controlled by same physical E-Stop button? should I just remove safety relay from HV enable and rely on CSMIO to control the power output of the Spindle and motors? my thought process was in case CSMIO fails to detect E-Stop atleast I have a direct control of power to the main parts of the machine, is this unnecessary?

also note I prefer to use HV enable and will work around that being enabled instead of turning it off.

thanks!