[RE-wrenches] Number of Controllers

[Exeltech]

I second Larry's recommendation of Blue Sky charge controllers.

I've used them for several years under some very adverse conditions,
yet they've performed flawlessly.  Support too has been excellent.


Dan
Sr. Engineer
Exeltech


--- On Wed, 5/23/12, Larry Crutcher, Starlight Solar Power Systems <larry at starlightsolar.com> wrote:

From: Larry Crutcher, Starlight Solar Power Systems <larry at starlightsolar.com>
Subject: Re: [RE-wrenches] Number of Controllers
To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
Date: Wednesday, May 23, 2012, 11:54 PM

Colin,
The IPN Network charge controllers from Blue Sky Energy can be configured as Master & Slave so ALL controllers work together. With up to 8 controllers on the network, you can have multiple arrays and orintations. Their new Duo model will function as hydro or wind diversion control. AND, each controller has a fully programmable lighting control! Sounds like this is the controller to meet all your requests. We have sold hundreds and I highly recommend them.


Larry CrutcherStarlight Solar Power Systems(928) 342-9103www.starlightsolar.com
Retail Store& Warehouse2998 Shari Ave.Yuma, Az 85365
USPS Postal Mail Only11881 S Fortuna Road, #210Yuma, AZ 85367






On May 23, 2012, at 6:47 PM, Colin Vogt wrote:
Wrenches,
What considerations are there for the number of charge controllers that can be in a stand-alone system with a single battery bank?  If one uses MPPT controllers, then  one would want (I think) a different controller for different module orientations.  That is, if one had a couple modules at one azimuth/tilt angle you would have a controller for that, and another controller for a module at a different azimuth/tilt angle.  Also, I can see having a controller to turn on yard lights (Morningstar makes one, although it is not an MPPT type and is of limited capacity).  Could also one have a controller for diversion loads?  And also a controller for a wind generator?  So I can see where a stand-alone system might have 4 or maybe even more controllers, all tied into the same battery bank.  Are there any considerations for a system like this?  For instance, do the setpoints for all controllers need to match?
Colin Vogt

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