thanks, Jay, Yes the FM80 can do pwm. BTW I'd like to know the frequency? I could use that to drive a SSR relay directly but my assumption would be it would cause the lights to flicker? Not so? I think that once triggered on they stay on for a full half cycle. It'd be simpler to do this for sure.
I would check the potential of the aux negative but I don't have any such controllers here on scoraig and I want to know the score before I go on site to install the SSR. thanks to all Hugh On 6 Dec 2014, at 00:09, jay peltz wrote: > 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 >> > _______________________________________________ > 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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