The cut off keeps on changing year wise and it depends on student's category and quota as well so please share your complete detail so that I can provide you the accurate information accordingly but in case you are from general category then the previous year closing rank for round 1 was 27686 so as per this rank the safest score would be 490 but I would suggest you to increase your target so that you can get admission in a better college comparatively.

Good Luck!!!