Well ok, there are two 1N4004 which are 1A diodes that try to protect against a 50A psu short, and a ptc 22A trip point, and ptc is that reacts very slowly. Sincerely dunno if that qualifies as rvp. The ptc and D2 topology would work imo if diode would be much higher current and ptc would be fusible (hence react in miliseconds not in 30 minutes), but with these component choices, D2 cant possibly hold its ground long enough for ptc to trigger - again imo.
And still the steppers power is taken well before that so for what steppers are concerned, this doesnt even matter. So again, dunno about rvp on ramps. If i would had one, i wouldnt try testing it :)
And still the steppers power is taken well before that so for what steppers are concerned, this doesnt even matter. So again, dunno about rvp on ramps. If i would had one, i wouldnt try testing it :)