<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Thanks Ryan. We are planning on installing RS485 anyway to empower a Sunny Webbox. Since we are Mac based we are counting on programming the SIs and SBs via the Webbox. SMA says it'll work. </div><div><br></div><div>Can anyone confirm? I have a service cable. Should I bring a PC for backup? <br><br>Sent from my iPhone</div><div><br>On Jun 23, 2013, at 4:34 AM, Ryan <<a href="mailto:ryan@kb1uas.com">ryan@kb1uas.com</a>> wrote:<br><br></div><blockquote type="cite"><div>
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<div class="moz-cite-prefix">Jeff<br>
First yes a 2 wire signal wire from the Sunny Island to the Genny,
Second if this is off grid only the Sunny Boy will be programmed
with a SMA service cable to be "Off Grid Only" and then it does
not need the RS485 com cable between it and the Sunny Island. The
RS485 cable is only needed when you want the Sunny Boy to switch
between Off Grid and Grid tie.<br>
<br>
Ryan
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On 6/22/2013 10:26 PM, Jeff Clearwater wrote:<br>
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<div style="font-family: Helvetica,Arial,sans-serif;"><span style="font-family: Helvetica,Arial,sans-serif;">Hi Esteemed
Wrenchies,<br>
<br>
For a totally off-grid AC Coupled Sunny Island system to
control an off-grid Kohler two-wire start generator I
assume:<br>
<br>
1) All I need to bring is control wire besides the genny and
Sunny Island.<br>
<br>
2) No external relays needed - all built in to the Sunny
Island and genny.<br>
<br>
3) If no grid-tie (only generator) then no need to program
DIGIN signal as per SMA's tech note on Gen and grid systems?<br>
<br>
Am I missing something here?<br>
<br>
Thanks!<br>
<br>
Jeff<br>
</span>
<div class="moz-signature">-- <br>
<br>
Jeff Clearwater<br>
Ecovillage Network of the Americas<br>
The Visionary Commons<br>
Ecovillage Design Consultant<br>
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skype - jclearwater<br>
cell - 413-559-9763<br>
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<span><span style="font-family: monospace;">Jeff Clearwater</span><br style="font-family: monospace;">
<span style="font-family: monospace;">
Village Power Design</span><br style="font-family:
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<span style="font-family: monospace;">
Renewable Energy Design & Installation</span><br>
Ecovillage Design Consultant<br style="font-family:
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<br style="font-family: monospace;">
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