Originally Posted by
Monty
Hi Folks,
I’m on the same path now. I’m about to build a light setup with 144 HB LED driven with 12 MW ELN-60-48D Drivers (12 LEDs each). My plan for now is to put 5 of them with Cool Whit’s on one dimming channel, 5 with Royal Blue on a second channel and two, one with Cool White and one with Royal Blue, on a third channel. The third channel should also be a Moonlight in nighttime. The issue is that you cannot put more than 3 ELN drivers on one channel. I hope to find a solution this weekend. My cousin is an electronic technician and we will sit down to put something together to amplify the dimming signal. We already talked on the phone about my problem, and he told me that it will be pretty simple to put something together that will support more than just 3 drivers by using a small additional stabilized power source and having an stabilized output to ensure not to overdrive the dimming channel to the ELN driver and also not having a fluctuation in light intensity. GHL has already a similar device, the PropellerControl, but it’s not fitting our needs. The current is ok but the voltage is 0-12V and then there is a rapid jump from 0-3V to fit the needs of fans in the starting period. Got this info from Martin GHL.
So as soon as I get all working I will post my results and the circuit solution if you would like to try it!!
Some more details about my setup:
• 950L (250g) tank 150x80x80 cm (59x31x31 inch), SPS mainly, some fish
• PL3 controller - 3 channels lighting, 3 channels Tunze pumps
• 144 Cree XP-G LEDs - 72 Cool White, 72 Royal Blue, no optics
• 12 ELN-60-48D drivers
• I’ll use an EVG-AP-2F for the two main channels to cutoff the drivers from the power after lighting period.
• I’ll use an EVG-AP-1F for the one channel which should also be used as Moonlight, to cutoff the driver from the power after lighting period.
• 3 contactors, one on each 220V outlet of the EVG-AP’s to protect the EVG-AP relays. There will be definitely a to high switching current with 5 drivers on the relay, that why the contactors.
• 3 “amplifiers” (developed by my cousin and me)(hopefully!) on each dimming channel coming out of the EVG-AP’s
Thanks
Monty
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