That is correct. That is the AFC (automatic frequency control) function, or also called Tertiary regulation. From the manual: Clocks that depend on the stability of the grid frequency for their accuracy become increasingly Inaccurate when there are constant frequency deviations. Frequency fluctuations, i.e., deviations from The nominal frequency, occur, for example, in off-grid power systems that operate with a diesel Generator. The ”Automatic Frequency Control (AFC)” (German: AFRA) function of the Sunny Island allows the use of clocks in these types of off-grid power systems. This function is activated using the ”250.11 AfraEna” parameter. The time deviation is compensated on average.
I believed the OP asked about FSPC, which only is in a positive direction from baseline Frequency. What are the appliances that are having issues? I am aware of fixes for certain types of issues. Some tweaks can be done in both the SI and SB to help with external issues. Thanks SMA America, LLC Steve Jefferson Service Line Supervisor 3925 Atherton Ave Rocklin, CA 95765 - 3714 U.S.A. Tel: +1 916 625 3185 (direct) Fax: +1 916 625 0871 Mobile: +1 916 622 4253 Email: steve.jeffer...@sma-america.com<mailto:steve.jeffer...@sma-america.com> www.SMA-America.com<http://www.sma-america.com/> [cid:image001.png@01CF1CFA.FE18BEB0]<http://www.youtube.com/watch?v=yQWzPuyqhzo&feature=youtu.be> This email and any attachments thereto may contain SMA America, LLC confidential, privileged and private material for the sole use of the intended recipient. Any review, copying, or distribution of this email (or any attachments thereto) by others is strictly prohibited. If you are not the intended recipient, please contact the sender immediately and permanently delete the original and any copies of this email and any attachments thereto. Thank you. From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Glenn Burt Sent: Wednesday, August 05, 2015 2:36 PM To: RE-wrenches Subject: Re: [RE-wrenches] Sunny Island FSPC Again, conflicting information, as I was told by an SMA trainer that the SI will run the shifted frequency in the opposite direction to allow electronics that use the zero crossing to recover, like clocks. Sincerely, Glenn Burt Sent from my 'smart' phone so please excuse grammar and typos. ________________________________ From: Steve Jefferson<mailto:steve.jeffer...@sma-america.com> Sent: 8/5/2015 13:05 To: RE-wrenches<mailto:re-wrenches@lists.re-wrenches.org> Subject: Re: [RE-wrenches] Sunny Island FSPC The Sunny Island only shifts in the positive direction to limit the Sunny Boys output. What components are having issues? You can contact me offline to discuss. Thanks SMA America, LLC Steve Jefferson Service Line Supervisor 3925 Atherton Ave Rocklin, CA 95765 - 3714 U.S.A. Tel: +1 916 625 3185 (direct) Fax: +1 916 625 0871 Mobile: +1 916 622 4253 Email: steve.jeffer...@sma-america.com<mailto:steve.jeffer...@sma-america.com> www.SMA-America.com<http://www.sma-america.com/> [cid:image001.png@01CF1CFA.FE18BEB0]<http://www.youtube.com/watch?v=yQWzPuyqhzo&feature=youtu.be> This email and any attachments thereto may contain SMA America, LLC confidential, privileged and private material for the sole use of the intended recipient. Any review, copying, or distribution of this email (or any attachments thereto) by others is strictly prohibited. If you are not the intended recipient, please contact the sender immediately and permanently delete the original and any copies of this email and any attachments thereto. Thank you. From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Darren Anderson Sent: Saturday, August 01, 2015 9:45 AM To: re-wrenches@lists.re-wrenches.org<mailto:re-wrenches@lists.re-wrenches.org> Subject: [RE-wrenches] Sunny Island FSPC Anyone know if the Sunny Island’s Frequency Shift Power Control only shifts the frequency in the positive direction as indicated in the manual (ex. +1 Hz to 61 Hz for the fAC Start Delta). Or can it also shift the frequency down? I’m getting 59 Hz output on a remote system and it’s screwing with some other components. [The entire original message is not included.]
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