Hi,
I have a 3 axis CNC machine with servos all around. This means that i have 3x 2,2kW VFD's for the 3 axis and one 7,5kW VFD for the spindle.
The VFD manual has this depiction of how to have breaker, contactor, reactor and filters connected to the VFD:
Attachment 485422
....but how should i setup this if i have 4 VFDs like in my setup? I was hoping to share some of the components between the different VFDs, eg. the reactor and filter for the axis VFDs and then maybe a seperate set for the spindle VFD...but then i'd have to have to contactor after the filters, is this ok? And what about sharing the reactor between multiple VFDs? I suspect i cannot change the order of reactor vs. filter, so if reactor sharing is a bad idea, then filter sharing is also out of the question...
Reactors are rather large and would fill a lot of sparse control cabinet space...besides the extra cost... the same goes for the filters...so "less is more"...
But how is this done "normally"? What have you guys done? What is the correct solution here?
Appreciate any input!
/Thomas