Hello Elena,
While palletizing robots are quite common in industry, they are less flexible than your usual 6-axis robot, so I've never used one myself. But from the spec-sheet it looks as if it would "digest" normal XYZABC / A1-A6 code, ignoring elements it does not require. So in order to simulate it, you need to turn your 4-axis palletizing robot into a "pseudo 6-axis robot" by splitting the part of the arm where you would usually have the A4 and turning A5 so that the flange is vertical.
Then just set up your robot like a usual, custom robot with the Custom Robot component. Let me know if you need an example!
That being said, it seems the arctic version does not have any special heating, so I guess (!!! - I may well be wrong) that the main difference between an "arctic robot" and a normal one is the lubrication and extra testing.
It stands to reason that you could also adapt other robots to the cold, so personally I wouldn't limit myself to a 4-axis robot.
Best,
Johannes