depends on how many people are queuing up at the passport control.
max 15min I would say.
walking time from your arrival gate, getting your luggage and exiting via customs arround 30min or even less, as your luggage might already be there by the time you get to the belt.
so total arround 30-45min..
if you only have handluggage then of course less..
and then about 5min walk from T1/T2 (depending which carrier you use) to the train station,