Make android not sleep

[JustusIV]

So i accidentally asked this question before but not in the android section, it got way off topic so i am starting a new thread specifically for android. Is there a way to turn off it going to sleep? I am running a program that has an alarm but if the machine is asleep it does not go off. There is an option in the program to disable sleep however it does not function on my touch pro 2. I do not care about battery life if i can get this working. I looked around and am only see the screen time out which has a max of 30 minutes. While this isnt a problem it appears that if i lock the phone it falls asleep way sooner then 30 minutes. And i again miss my alarms.

Thoughts.