When is the first counselling round for RV college of engineering?

After receiving the rank you have to go for document verification at KEA office. After the verification is done go for online counselling where you have opt for the colleges in accordance with your rank( you can get the schedule for online counselling on KEA website).
Match your rank with the cut-offs of the colleges and in accordance with that chose the college in online counselling. After the counselling is over KEA will announce the college allotted to you (you can check the allotment date in schedule).
After the allotment of college you need to confirm it and then download the admission order from the website and visit the allotted college for further admission procedure.
Carry the attested copies of the required documents along with admission order during admission.