12V dusk / dawn timer needed

mike95490
mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
I was hoping the Morningstar 15A MPPT might have a load terminal with dusk-dawn capability. It does not.

So, I have to find a dusk-dawn 12V controller that will manage about 3 watts of LED lights that need to be on nightly. I'd like to not have a controller that burns 10 watts to do this !! Any ideas? (solar power IR security light not the right option)

What do landscape lights use - plug in timers ?
Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-Lister ,

Comments

  • Cariboocoot
    Cariboocoot Banned Posts: 17,615 ✭✭✭
    Re: 12V dusk / dawn timer needed

    Maybe a 12V irrigation timer like this:

    http://www.brazix.com/timer/BRX1224PTS1.asp

    Power consumption seems pretty high for a digital timer if it's really 15A! But maybe there's something like this with better specs.

    (Not a recommendation or endorsement of either the product or seller.)
  • niel
    niel Solar Expert Posts: 10,300 ✭✭✭✭
    Re: 12V dusk / dawn timer needed

    some morningstar controllers have timers and i believe xantrex has one as well, but as you know not in an mppt version.
    http://www.morningstarcorp.com/en/sun-light
    naws does carry the sunlights, but i forgot the model for xantrex.
  • vcallaway
    vcallaway Solar Expert Posts: 157 ✭✭✭✭✭
    Re: 12V dusk / dawn timer needed

    I just bought a Xantrex C12 from our sponsors for just that purpose.

    You can set it for turn on at dusk for set time or dusk to dawn.
  • niel
    niel Solar Expert Posts: 10,300 ✭✭✭✭
    Re: 12V dusk / dawn timer needed

    yes, that's the one i was thinking of and i was looking for it when you chimed in with it.
  • icarus
    icarus Solar Expert Posts: 5,436 ✭✭✭✭
    Re: 12V dusk / dawn timer needed

    I thinks many of the Bluesky controllers will act as a dawn to dusk lighting controller:http://www.blueskyenergyinc.com/products/details/solar_boost_2512i/

    Tony
  • mike95490
    mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
    Re: 12V dusk / dawn timer needed

    I may have found a kit here. Full of parts, seems pretty complex, but reportedly, low consumption. http://www.cirkits.com/das1/ & http://solorb.com/elect/solarcirc/das1/ schematic.

    I'm powering a couple of LED signage lights, leds mounted on a substrate, with a driver IC. 6 year life if 24/7, 12years night only. They have a sale on the lights, but the shipping/handling is a killer - $16
    http://axiompowercorp.com/osc/product_info.php?products_id=88 $2ea
    shipped from Las Vegas, NV
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister ,

  • Solar Guppy
    Solar Guppy Solar Expert Posts: 1,989 ✭✭✭
    Re: 12V dusk / dawn timer needed

    http://www.hobbytron.com/CE-CK1003.html
  • System2
    System2 Posts: 6,290 admin
    Re: 12V dusk / dawn timer needed

    http://www.backwoodssolar.com/catalog/lights.htm#12%20volt%20DC%20NIGHT%20WATCHMAN%20PHOTOSWITCH]

    This dusk to dawn controller is outdoor rated and can withstand salty marine air environments.

    It can handle up to 10 amps of 12v DC current with a momentary 600 watt surge. In standby mode, it consumes only 0.15 milliamps and 16 milliamps when powering a load.

    It will turn incandescent, halogen, or fluorescent lights ON in the evening within one half hour of sunset and OFF in the morning within one half hour of sunrise.
  • mike95490
    mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
    Re: 12V dusk / dawn timer needed
    Jespercd wrote: »
    http://www.backwoodssolar.com/catalog/lights.htm#12%20volt%20DC%20NIGHT%20WATCHMAN%20PHOTOSWITCH]

    This dusk to dawn controller is outdoor rated and can withstand salty marine air environments.

    It can handle up to 10 amps of 12v DC current with a momentary 600 watt surge. In standby mode, it consumes only 0.15 milliamps and 16 milliamps when powering a load.

    It will turn incandescent, halogen, or fluorescent lights ON in the evening within one half hour of sunset and OFF in the morning within one half hour of sunrise.

    Ah Ha ! This looks like the ticket for $40. I hope it's solid state, and not a relay, I don't know if my LED's will draw enough to keep relay contacts active. (contacts usually require some amps to provide a "oxide punch thru" unless you have a "dry contact relay")

    I'll keep you posted - install likely in late Dec.
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister ,

  • Dave Angelini
    Dave Angelini Solar Expert Posts: 6,713 ✭✭✭✭✭✭
    Re: 12V dusk / dawn timer needed

    How about an Intermatic timer. Uses no external power (internal camera battery)
    It can switch 240VAC and up to 28VDC. Lots of solar applications and it was redesigned from the ill conceived spawn that it came from. Amazon has them near $30.

    http://www.amazon.com/Intermatic-ST01AC-Astronomic-Feature-Almond/dp/B000XOH2F4/ref=sr_1_1?ie=UTF8&s=hi&qid=1259939104&sr=8-1

    PS I have 2 that have been good for 2 years on the original battery outdoors in a weather box. This product was pretty bad before and I "think" they fixed it!
    "we go where power lines don't" Sierra Nevada mountain area
       htps://offgridsolar1.com/
    E-mail [email protected]

  • mike95490
    mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
    Re: 12V dusk / dawn timer needed

    hmmm, I wonder if the Intermatic DT620CL 15 Amp Indoor Astronomic Digital Timer is the same thing, only in a tabletop package. or is it the old style spawn?
    2 watch batteries L44 good for 3 months - Spawn.

    your wall mount timer Intermatic ST01AC takes CS2 battery, which is longer life, but the timer appears to "click" which indicates a relay. Maybe it is worth looking at.
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister ,

  • Dave Angelini
    Dave Angelini Solar Expert Posts: 6,713 ✭✭✭✭✭✭
    Re: 12V dusk / dawn timer needed

    Yes a relay in the sun timer St01C. Pretty hard not to at 31VDC and 240AC! It was flight tested, sort of.....
    "we go where power lines don't" Sierra Nevada mountain area
       htps://offgridsolar1.com/
    E-mail [email protected]