I wanted to post resolution on a reflow oven problem we had but can't seem to search out the old thread. So, this is new but old.
Our OmniFlo 7 conveyor was stopping every once and a while and the speed indicator on screen said 1000+ ipm. We cleaned the chains/guides thoroughly. It seemed to help at first but the problem arose again and again and gradually got so bad the oven was non-functional. We checked all machine grounds, transformer connections, dart board, etc. with no fix. Finally, we installed a noise reduction kit inclusive of a new computer interface card and board # 7 in the card cage and the problem is gone.