On Sunday 03 February 2019 14:45:38 Peter C. Wallace wrote:
> the nuts on those connectors which are below the boards in this box.
>
> Now in the next step of wiring this up I have a pair of 40 amp SSR's,
> with 5.11+ on both + terminals of the SSR's, and am using
> hm2_5i25.0.7i76.0.0.outputs 15 and 14 with the idea that turning them
> on will ground the -terminals, enabling the SSR's in sequence, when
> the first one is enabled, power is applied to the stack of toroids
> thru a 50 ohm 200 watt resistor the start chargeing the filter caps, 3
> second later an identical signal is sent to
> hm2_5i25.0.7i76.0.0.output14 which bypasses the 50 ohm resistor,
> enabling the spindle psu at full power.
>
> I can see, with a halmeter that the signal is sent to those output
> pins.
>
> But they aren't turning on to sink the - pins of the SSR's. They
> regardless of the halmeter state, stubbornly sitting at 4.66+ which
> would be about what I'd expect to see when I measure to ground/common
> with a 10 megohm input DVM from the - terminals of the SSR controls.
> Not enough current flowing thru the meter to tickle the SSR's of
> course. I am wired to the last and next to last at the upper end of
> TB5 which the docs say is output15 and output14. Field power on the
> orange connector is 12.2 volts positive on pin 1, and negatives are
> wired common between pin 8 of the orange connector and pin 24 of the 4
> pin header to its left.
>
>
>
>
> Another common issue can be that you are not using the field power
> common for the load common (note that the field I/O is galvanically
> isolated from logic power so the load power common must connect to the
> field power (orange connector) common
>
It is common. And has been all along..
>
> Peter Wallace
> Mesa Electronics
>
> (\__/)
> (='.'=) This is Bunny. Copy and paste bunny into your
> (")_(") signature to help him gain world domination.
>
>
>
> _______________________________________________
> Emc-developers mailing list
> Emc-developers@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-developers
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>
_______________________________________________
Emc-developers mailing list
Emc-developers@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-developers
