screen time out

[pb5525]

Most tablets have screen timeout options of up to 30 minutes. Once I encrypted my Samsung galaxy tab 2 my 30 min. Option went to 15 ,30, and 60 seconds ! Of inactivity before my screen turns off. 1 minuet! How can I personally disable the time out option? My unit is rooted. Running 4.2.2. I that some one is a guru and knows what to do.