routercnc_MK3

[routercnc]

Thanks Geoffrey,

Starting to enjoy the electronics but would really like to finish it soon !

Can anyone confirm that using an SSR (25A) is OK to control the 2 power supplys? My plan is to apply 12V DC across the DC side and switch the 240V AC supply of the live cable to the 72V linear power supply primary, and also to the live cable of the 32V SMPS.


I understand that when SSRs are 'off' there is still a small voltage which passes through the AC side so in theory the drivers are still powered, although the voltage is very small. Is this the case and should I be concerned about it? Should I add anything else?

I also understand that an SSR works well with pure resistive loads - but I think the linear supply is a heavily inductive load with voltage and current out of phase. Is this the case and again is it a problem for these SSR devices?

I don't know what type of load the SMPS is but again will this switch well with the SSR?

See post #62 for the circuit diagram - the SSR is slightly right of centre.

This is a sketch of where it will be located (red rectangle):


Thanks for your help