New CNC Mill on the horizon

[Jonathan]

Have you put the capacitor(s) on the output of the rectifier? If not then that reading seems about right, as the meter is reading the rectified AC waveform, not a smooth DC output.

[fvfdrums]

Thanks Jonathan,

so we have now connected the caps up to the BR, on powering up to check what voltage we were getting instead of even getting there we got a huge amount of humming and some extreme heat through the negative cable coming from the BR so immediately turned it off.

any ideas what could be going on / we are doing wrong?

we have checked that it is definitely the +ve of the BR going to the +ve on the caps and the same for the -ve.

does there need to be a load on the PSU before we power it up?

[fvfdrums]

scratch that - problem solved, 68/69 Vdc now :)