Ultimaker 2+ Extended Z speed?

[RetromanIE 41]

I'm wondering if anyone might have some thoughts on the "Z Axis Movement Speed" setting in Simplify3D? The defaults is usually 16.7mm/s, but I've seen mention of using 40mm/s on the Ultimaker 2+ series of printers. I assume the firmware will limit the speed anyway, but what is the actual speed recommended by Ultimaker?

16.7mm/s and 40mm/s just don't sound correct to me, but I'm open to being educated on this :)

 

So just to be clear, although I'm talking about S3D I'd really like to know what the official line from Ultimaker is on the Z speed(no matter the software using the setting).

 

Thanks

 

Edited February 26, 2019 by RetromanIE

[RetromanIE 41]

Anyone from Ultimaker have the details on this? 

[tinkergnome 927]

The maximum z speed for the UM2(+) firmware is 40 mm/s. The same speed is used for "homing".

The default profiles in Cura do not limit the z speed, so 40 mm/s will be used for layer changes too.

But the max. acceleration for z is only 100 mm/s2, 40 mm/s will be probably never reached for short moves.

I think, it doesn't matter much for the (very short) moves during a layer change. Personally i use 20 mm/s as the max. z speed in S3D and noticed no difference.

Hope that helps!

[RetromanIE 41]

Thanks for that tinkergnome.