Rs 300000 is the amount of demand draft required for students who are called in for Phase 2 Counselling onwards.

While Rs. 50000 is required only for Phase1 Counselling students who have obtained ranks below 20,000.

Depending on yourranks you shall be called for counselling.
All important information regarding Counselling dates and documents required hav ebeen compiled below.

https://www.google.co.in/amp/s/engineering.careers360.com/articles/viteee-counselling%3famp