Hi Hugh I use 3-32vdc SS relays all the time powered from the AUX relay ( xantex, classic,outback). They work just fine in fast and slow PWM And switching both AC or DC, with correct relay of course.
As to connecting the ground, that I can't tell you. But your ohm meter should tell you no? Jay Peltz power > On Dec 5, 2014, at 2:09 PM, Hugh Piggott <h...@scoraigwind.co.uk> wrote: > > Hi Hugh again > Just to clarify the set up: > The SSR controls the AC power from the inverter to the heating load. It > switches partway through each half cycle and thus controls the power to the > load. > The input to the SSR requires a power supply 8-32 V present all the time it > is working. I suppose it might be feasible to take this from the AUX but as > this will be pulsing PWM I don't want to rely on that. Its a supply voltage > to the input and not a control signal and for that reason I want to take it > from the main battery which happens to be a 24 volt one which is ideal. > The control signal is 0-10 volts DC and this controls the amount of power the > unit delivers smoothly. I want to get this from a capacitor that charges off > the aux output so that is turns the PWM into an analog voltage signal that > controls the SSR and controls the load. I do this all the time with tristar > outputs so it does work. I have just never done it with the AUX of a FM80 > controller. > > So my question again is simply this. Can I connect the ground of the AUX to > the inverter batter ground negative? Most likely it is already connected, > but I'd like to know if connecting it will damage the FM80. I am also trying > the outback forum. > > thanks for any help > Hugh > >> On 5 Dec 2014, at 18:44, Hugh Piggott wrote: >> >> hi wrenches, >> >> I am installing some load controls for a client who has a FM80 controller. I >> don't have experience with this product. It has a 12V aux output that I wish >> to drive an SSR but the wiring is complicated by the fact that this SSR also >> needs a power supply as well as a control signal. I want to use 24V nominal >> system battery for the SSR power and AUX for the signal. Can I connect the >> grounds together? >> >> Additional info. I am using a phase control SSR driven by a 0-10 volt signal >> to control an AC load with phase angle shift control. I plan to put an RC >> filter that converts the PWM output of the AUX from the CC to give an analog >> voltage output that determines the loading of the inverter. Crydom MCPC2450 >> >> thanks for any help before I go on site next week >> Hugh >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org >
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