I have a device meant to be used inside electrical cabinets. It has a metal casing and is powered by 24V DC. It has three power connectors: 24V, 0V and PE.
I was surprised to find out that 0V and PE are shorted, as well as the metal casing. I was under the impression that this was not OK. Is this an actual issue or are they allowed to make such a device?
As a side question: is there anything to be gained by shorting earth and zero inside a device like this?
Edit: The actual device that got me to ask the question is a strobe controller IPSC2, currently owned by Mavis/Framos.
It's basically a programmable pulse current source for powering LEDs in machine vision. It doesn't really have a datasheet, but there is a manual on the original manufacturer's website: