<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Firmware version? What is the generator low voltage set point set to? If it is a good quality get set this should be set ~110-112 VAC that way when the gen set is unloading/shutting off, the inverter will switch at that voltage from gen set to inverter. you also have a Hz set point for the genset to latch/unlatch that apparently it is not disconnecting. 55hz. 80 VAC for AC2, I believe is the default.<br class=""><div><blockquote type="cite" class=""><div class="">On Dec 29, 2016, at 2:27 PM, Lou Russo <<a href="mailto:lou@spreesolarsystems.com" class="">lou@spreesolarsystems.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div class="">Wrenches,</div><div class=""><br class=""></div><div class="">I recently installed a Schneider Conext SW 4024, Schnieder's DC Distribution panel, AC Distribution panel, SCP, and the AGS. It was to be a straightforward inverter swap, Xantrex 4024 to the Conext SW setup. The actual installation went fine. I did switch over the house wiring from 120 to 240 as well as the diesel genset. </div><div class=""><br class=""></div><div class="">After a steep learning curve with the client all seemed well. 1 week later she called and says the power behaves oddly as the generator is shutting down. Symptoms are some arc fault breakers trip and the compressor on her fridge sounds like its bogging down. I make the 45 minute drive out and started my search. This is a site with 3 buildings on 3 acres. I double checked all my wiring at the inverter, then moved onto the various buildings checking for redundant neutral to grounds, proper bonding, etc… Surprisingly although not great workmanship everything is where it is supposed to be. I decided to give the AC input on the inverter it's own dedicated neutral as at this point I was reaching for straws and the installation manual was unclear about this detail. Still nothing. A call to Schnieder confirmed that there was no setting I was missing. </div><div class=""><br class=""></div><div class="">I placed another call to Schnieder tech support. They did and have continued to answer the phone promptly. It did take a bit of chasing them but I finally got a answer that there Level 3 folks can reproduce the error. The inverter is following the frequency of the genset as it winds down down to 40hrtz. This is after the AC transfer inside the inverter has happened. During the cool down period everything is fine. This happens as the genset is actual shutting off and spinning down to a stop. They say this a firmware issue and that it will take months to push out as is needs to be UL listed. In the meantime I have a pissed off client, her oven went belly up on the low frequency voltage, there is concern about possible unseen damage to her new water pump, and I wasted countless hours of my own time attempting to make the situation right. All of this due to a firmware that was released with a fatal flaw and can not be changed for months. </div><div class=""><br class=""></div><div class="">I am extremely disappointed in Schneider. I have been hesitant use them over the years as I was still scarred from the Xantrex days. My “beta” test went will with a early version I installed 2 years ago so I figured it was a safe move. Obviously I was wrong. Lesson learned stick with Outback and SMA. </div><div class=""><br class=""></div><div class="">So I have 2 questions for the list.</div><div class=""><br class=""></div><div class="">1.Has anybody else on the list seen this issue and corrected it regardless of the firmware? I have installed one other conext sw about 2 years ago when it first came out. The setup is very similar except that it is 48V and has a very old firmware. I went out to this old site to confirm all is well and it is fine.</div><div class=""><br class=""></div><div class="">2.Does anybody have a good contact at Schneider that could be of help? I tried to contact Sandra Herrera as she was a great help years ago, but her phone number no longer works. </div><div class=""><br class=""></div><div class="">3.Does anybody have an old version of the Conext firmware lying around they could point me to? The website does not seem to have old versions. </div><div class=""><br class=""></div><div class="">Any input is greatly appreciated!</div><div class=""><br class=""></div><div class="">Schnieder, if you have a presence here contact me. </div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><div class="gmail_signature"><div dir="ltr" class=""><div class="">Aloha,<div class=""><br class=""></div><div class="">Lou Russo</div><div class=""><a href="mailto:lou@spreesolarsystems.com" target="_blank" class="">lou@spreesolarsystems.com</a></div><div class="">440 345 6762</div><div class="">Spree Solar Systems LLC </div><div class="">CT-34322</div><div class=""><br class=""></div></div></div></div></div>
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