Meanwell driver question - current limiting

bearpeidog · 05/12/2010, 11:54 AM

A wise man in the forums posted: "That said, the 60w meanwell drivers are especially "dangerous" because their current range extends beyond what most of these LEDs can handle (all the way up to 1.3A) so it's easy to fry even a "correct" string."

I was reading up and read in the meanwell spec that there is a current override as stated:

"7. Output voltage can be adjusted through the SVR1 on the PCB ; limit of output constant current level can be adjusted through the SVR2 on the PCB."

Does this mean that if I set SVR2 for 700ma, that it will limit the circuit and not fry the LED's thus making it a bit safer? I think I'm going with the meanwell driver and having this protection seems like a good idea. Also, since I don't know my butt from my elbow, I could be way off base!

Thanks!

der_wille_zur_macht · 05/12/2010, 11:59 AM

Setting SVR2 to the desired LED drive current is essentially standard operating procedure. You must do that as part of the installation process. The problems can occur if users don't set that pot, or set it incorrectly.

bearpeidog · 05/12/2010, 12:47 PM

Thank you "Wise Man"!

05/12/2010, 11:54 AM	#1
bearpeidog Registered Member Join Date: Apr 2005 Location: Milton, Vermont Posts: 560	Meanwell driver question - current limiting A wise man in the forums posted: "That said, the 60w meanwell drivers are especially "dangerous" because their current range extends beyond what most of these LEDs can handle (all the way up to 1.3A) so it's easy to fry even a "correct" string." I was reading up and read in the meanwell spec that there is a current override as stated: "7. Output voltage can be adjusted through the SVR1 on the PCB ; limit of output constant current level can be adjusted through the SVR2 on the PCB." Does this mean that if I set SVR2 for 700ma, that it will limit the circuit and not fry the LED's thus making it a bit safer? I think I'm going with the meanwell driver and having this protection seems like a good idea. Also, since I don't know my butt from my elbow, I could be way off base! Thanks!

05/12/2010, 11:59 AM	#2
der_wille_zur_macht Team RC Member Join Date: Sep 2003 Location: NY Posts: 17,749	Setting SVR2 to the desired LED drive current is essentially standard operating procedure. You must do that as part of the installation process. The problems can occur if users don't set that pot, or set it incorrectly. __________________ Inconveniencing marine life since 1992 "It is my personal belief that reef aquaria should be thriving communities of biodiversity, representative of their wild counterparts, and not merely collections of pretty specimens growing on tidy clean rock shelves covered in purple coralline algae." (Eric Borneman)

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05/12/2010, 12:47 PM	#3
bearpeidog Registered Member Join Date: Apr 2005 Location: Milton, Vermont Posts: 560	Thank you "Wise Man"!