remote temperature sensor

System
System Posts: 2,511 admin
in General Solar Power Topics #1
so if you're paralelling two charge controllers (mx60 and sunsaver mppt) whats your take on using RTS on only one controller (the mx60)? NAWS doesnt offer one for the sunsaver and I havent had any luck locating one on other sites. think its possible to use the mx60 probe for both units????
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  • BB.
    BB. Super Moderators, Administrators Posts: 33,658 admin
    #2
    Re: remote temperature sensor

    A battery temperature sensor is highly recommended... Try calling NAWS directly. One should be available (according to the Morning Star specs.).

    Usually, a controller with a remote sensor will use its internal compensation--and because the controller's temperature rises during normal operation--it typically overestimates the temperature and undercharges the battery.

    -Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
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  • Solar Guppy
    Solar Guppy Solar Expert Posts: 1,989 ✭✭✭
    #3
    Re: remote temperature sensor

    The SunSaver Mppt should be mandatory for a battery temp sensor, its the same one for all the MorningStar controllers.
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  • BB.
    BB. Super Moderators, Administrators Posts: 33,658 admin
    #4
    Re: remote temperature sensor

    Going by NAWS' site, the one BTS the listed for MorningStar products:
    Remote Temperature Sensor for all Morningstar controllers except SunSaver and SunGuard

    BTS manual (PDF)

    :confused:

    I think you will have to call NAWS and/or MorningStar support for the current information.

    -Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
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  • Solar Guppy
    Solar Guppy Solar Expert Posts: 1,989 ✭✭✭
    #5
    Re: remote temperature sensor

    I have a pair of the MS sensors and the MorningStarCorp website onlys lists one BTS

    I'm sure its only one for all the MorningStar controllers; While they haven't upgraded the webpage, listed as controllers are:

    ProStar (Gen 2)
    TriStar
    SunKeeper
    SunSaver Duo

    and I'm 100% sure the SunSaverMppt uses the same as the above contollers ( I have also verified with the Engineers at MS )


    http://support.morningstarcorp.com/item.cfm?ItemId=29
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  • System2
    System2 Posts: 6,290 admin
    #6
    Re: remote temperature sensor

    I called morningstar and they do only make one RTS and it will work on the sunsaver. wish I would have addressed this before I ordered the controller from NAWS. oh well, typical. thanks guys mark
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