does it kick up then back?
heres how i imagine it working...
-micro switch strip is adjustable on the z axis (automatic or manual) to proper height for board. board does not engage the switch during normal use.
-start button triggers latching relay on
-mushroom cutoff & all micro switches are wired in parallel from the NO contacts to the off terminal on the latching relay.
-if any switch is engaged, either by a bucking board or the operator kill switch, relay will cut power until the start button is re-engaged
-this will allow for the board to finish its complete pass without tripping a kill switch.
-any number of kill switches will work
-relay carries load, not the switches, so any size switch will work
make any sense?
-sj