Murata NCS6D1215C DC/DC converter for +15V and -15V
Pin 16 is 0V, pin 11 is -Vout and pin 14 is +Vout. You need to read the table more carefully - look at the columns - one says "single" and the other says "double" - you read the "single output" column. Input and output are isolated so unless you have input tied to output 0V, trying to use the input for anything sensible won't work.

You don't need any current limiting - see absolute maximum ratings - it says short circuit protection is continuous.