Preheat oven to 350 and grease a 9x13 baking dish. Cook pasta until al dente and in a large skillet, brown beef until not pink. Add taco seasoning and water, then bring to a boil. Reduce heat. Add black beans, Rotel and salsa. Stir well. Add 1 cup cheese and combine until melted. When pasta is cooked, drain and add to skillet. Mix well. Transfer to baking dish cover and bake for 20 minutes. Uncover, add rest of cheese and bake for 5 additional minutes until melted.