All of the OutBack inverters have a programmable mode for the AUX OUTPUT which will turn off AC loads when the inverter reaches its AC output current limit or if it gets too hot (i.e. is overloaded). This mode is called "DIVERT-AC" and is in addition to a "DIVERT-DC" mode which is similar except the DC mode does not consider the AC output current level or over-temperature of the inverter.
The DIVERT-AC system was developed based on a problem Bob-O had many years ago - he was using the AUX OUTPUT to control an electric water heater as a dump load for his hydro system. When he ran the clothes or maybe dish washing machine with hot water the combination of the water heater's electric elements and the start surge of the washer was over loading the inverter. Once we added this mode his problem was solved (or at least he never said anything any more...) To use the DIVERT-AC system - set the "DIVERSION ON SETPOINT" at a relatively low battery cutout level - then the load will operate nearly all the time (except when the battery voltage gets low or when a large load is placed on the battery system). I just checked on a system here and lowest I could set it at was 24.0 VDC (on a 24V system of course). This might be a little high but is probably acceptable. There is a second setting called "DIVERSION OFF DELAY" which can be set up to 255 seconds which is how long the load is kept off once it is turned off. I would think a long time period would be best for this setting. If you have a large system like a quad stack - then you can use each inverter's AUX OUTPUT to control a different set of loads. By staggering the DC voltage setting and the time delay the load shedding system can be staggered slightly to improve operation and reduce cycling. As was also mentioned - the generator start system can also be used to help with heavy load conditions - in conjunction with the load shedding system - I always advise using the FNDC with doing a generator start system and using the built in AUX relay that is included with the FNDC for the generator start system control. Christopher Christopher Freitas Director of Research and Development OutBack Power Systems, Inc. cfrei...@outbackpower.com Tel 360 435 6030 Cell 360 202 4239 19009 62nd Ave NE Arlington WA 98223 USA www.outbackpower.com -----Original Message----- BTW, Outback inverters also have a loadshed relay control function built in. MESSAGE CONFIDENTIALITY NOTICE: This message (including attachments) is covered by the Electronic Communication Privacy Act, 18 U.S.C. sections 2510-2521, is confidential, and may also be protected by attorney-client or other privilege. If you believe that it has been sent to you in error, please do not read it. If you are not the intended recipient,you are hereby notified that any retention, dissemination, distribution, or copying of this communication is strictly prohibited. Please reply to the sender that you have received the message in error, then delete it. Thank you. _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
