Hi ray. , There is the diversion "solid state" for SS relays. Jay Peltz power
> On Dec 5, 2014, at 3:08 PM, Ray Walters <r...@solarray.com> wrote: > > I don't believe the aux is PWM. It should be a straight 12 v 200 mA output > as I recall. Its just enough to run a battery fan, or a 12 v relay. You > shouldn't need anything else. Being current limited, it doesn't even need a > fuse. > Also you need to run both leads (pos and neg) from the aux output to the > control side of the relay. It is its own output and you will probably cause > unfortunate things to happen if wired in common with anything else. I > usually use signal wire with multiple conductors, so trying to get away from > one control conductor is fool hardy anyway. > R.Ray Walters > CTO, Solarray, Inc > Nabcep Certified PV Installer, > Licensed Master Electrician > Solar Design Engineer > 303 505-8760 > On 12/5/2014 3:09 PM, Hugh Piggott 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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