CNC Machines and power micro blips

[racerbear02]

OK thanks for the feedback, but as a Newcomer, what is VFD and BOB?

Any recommendations of UPS etc.?

[Boyan Silyavski]

OK thanks for the feedback, but as a Newcomer, what is VFD and BOB?

Any recommendations of UPS etc.?

VFD- Variable frequency drive , the thing that controls the spindle motor
BOB- Breakout board, the mother board of your machine


I got my 2 x 1500W UPS from bootsale for 15euro each. New are 500euro each

From any PC store chain 1000W should be say 50-100euro each. You will need one only. Use the single outlet/no ups but only protector/ for the VFD

[racerbear02]

Thanks for that

[Boyan Silyavski]

All VFD have screw terminals where they have relay contactor that switches on or off when the spindle motor is powered or not. Read the manual.

From there you take 2 wires and wire them splitting the line of the big red button saying Estop. Read the BOB manual and be careful not to split 220VAC, cause some Estop buttons have double chain, one for the small voltage signals/5-24VDC depending on the BOB/ and one for directly cutting the 220VDC power/mine for example is made like that/

[racerbear02]

Thank you yet again, I will study the manual etc when I get it

[racerbear02]

OK, I now have the machine and as the spindle is 2.2 kw and it and all the electronics are wired in together and fed by one power supply, what sort of power UPS should I be looking at?? 3kw?? or is there any other solution? as a UPS of that power will cost a fortune.

As always, thanks in advance.

[Boyan Silyavski]

no need for UPS for the VFD. It will be extremely expensive