Question - CLU 048 1212 cobs with HLG 240 1400?

M

MACDRIZZLE

Member
Hey, I was planning on running 5 Citizen CLU-048 1212's 3500k 36v on an HLG-240-1400.

Will that setup work if I have it on full blast?
since 36 volts * 1.4 Amps = 50.4 watts per cob
50.4 watts * 5 cobs = 252 watts total which is more than the 250.6 watt limit from the data sheet.

Am I wrongly assuming that the cob is 36 volts at that current?
Is there any way to tell what the forward voltage on the cob will be at different currents?

Driver Data Sheet-
http://cobkits.com/wp-content/uploads/2016/08/HLG-240H-C-spec.pdf
COB Data Sheet-
http://ce.citizen.co.jp/lighting_led/dl_data/datasheet/en/COB_5/CLU048-1212C4_P3368_1115.pdf

Thanks!
 
GreenMotion

GreenMotion

Member
MACDRIZZLE said:
Hey, I was planning on running 5 Citizen CLU-048 1212's 3500k 36v on an HLG-240-1400.

Will that setup work if I have it on full blast?
since 36 volts * 1.4 Amps = 50.4 watts per cob
50.4 watts * 5 cobs = 252 watts total which is more than the 250.6 watt limit from the data sheet.

Am I wrongly assuming that the cob is 36 volts at that current?
Is there any way to tell what the forward voltage on the cob will be at different currents?

Driver Data Sheet-
http://cobkits.com/wp-content/uploads/2016/08/HLG-240H-C-spec.pdf
COB Data Sheet-
http://ce.citizen.co.jp/lighting_led/dl_data/datasheet/en/COB_5/CLU048-1212C4_P3368_1115.pdf

Thanks!
Click to expand...
Try the citizen led calculator. Gives you fv at different currents.
 
R

rocho

Well-Known Member
MACDRIZZLE said:
Hey, I was planning on running 5 Citizen CLU-048 1212's 3500k 36v on an HLG-240-1400.

Will that setup work if I have it on full blast?
since 36 volts * 1.4 Amps = 50.4 watts per cob
50.4 watts * 5 cobs = 252 watts total which is more than the 250.6 watt limit from the data sheet.

Am I wrongly assuming that the cob is 36 volts at that current?
Is there any way to tell what the forward voltage on the cob will be at different currents?

Driver Data Sheet-
http://cobkits.com/wp-content/uploads/2016/08/HLG-240H-C-spec.pdf
COB Data Sheet-
http://ce.citizen.co.jp/lighting_led/dl_data/datasheet/en/COB_5/CLU048-1212C4_P3368_1115.pdf

Thanks!
Click to expand...
finally have you find a way to drive those 5 cobs at 1.4a?
maybe that?
HLG-320H-C1400
i'm in the same throuble!
 
Last edited:
Rayne

Rayne

Well-Known Member
Lets see...

The hlg 240h 1400 has a "costant current region" of 89-179v.
5 COBs that need 36v to produce light. (36v x 5 COBs = 180v) 180v x 1.4A = 252 watts

To answer the question... the intended setup might push the driver. According to the datasheet information...Thankfully the driver's "Open circuit maximum" is 182v.

If you want to use the hlg 240h series driver. The HLG 240H 1050(1.05A), with a 119v - 241v (241v x 1.05A = 253 watts) output, will have plenty to operate the COBs. (36v x 5 COBs =180v) 180v x 1.05A = 189 watts
 
Last edited:
Geyapex Technology

Geyapex Technology

Well-Known Member
MACDRIZZLE said:
Hey, I was planning on running 5 Citizen CLU-048 1212's 3500k 36v on an HLG-240-1400.

Will that setup work if I have it on full blast?
since 36 volts * 1.4 Amps = 50.4 watts per cob
50.4 watts * 5 cobs = 252 watts total which is more than the 250.6 watt limit from the data sheet.

Am I wrongly assuming that the cob is 36 volts at that current?
Is there any way to tell what the forward voltage on the cob will be at different currents?

Driver Data Sheet-
http://cobkits.com/wp-content/uploads/2016/08/HLG-240H-C-spec.pdf
COB Data Sheet-
http://ce.citizen.co.jp/lighting_led/dl_data/datasheet/en/COB_5/CLU048-1212C4_P3368_1115.pdf

Thanks!
Click to expand...
1.4a is a little high for this model Ra70/80, as its typical current or 100% efficiency current is 1.08a, you need bigger heat sinks if you want to drive them at 1.4a, so I would suggest HLG-240H-1050 to drive the 5 cobs which is good for their lifespan and higher Ra is better :)
 
nogod_

nogod_

Well-Known Member
He asked if i can explain why he cant fit all these cobs...
And i tell him...
No siree bob.
Its not my job.
I dont do that.
Im a pimp ass rapper.
I thought you knew that?
 
R

rocho

Well-Known Member
Geyapex Technology said:
1.4a is a little high for this model Ra70/80, as its typical current or 100% efficiency current is 1.08a, you need bigger heat sinks if you want to drive them at 1.4a, so I would suggest HLG-240H-1050 to drive the 5 cobs which is good for their lifespan and higher Ra is better :)
Click to expand...
Hi geyapex, I really like your Solo light, an Amare cheaper alternative! About 048 1212 aren't so bad at 1.4W and with CPU active heatsink easy keep them cool! I only do not know any way to drive 5 cobs at 1.4 A With a single driver..why not HLG-320H-C1400?
 
Geyapex Technology

Geyapex Technology

Well-Known Member
rocho said:
Hi geyapex, I really like your Solo light, an Amare cheaper alternative! About 048 1212 aren't so bad at 1.4W and with CPU active heatsink easy keep them cool! I only do not know any way to drive 5 cobs at 1.4 A With a single driver..why not HLG-320H-C1400?
Click to expand...
the typical voltage of one 048 1212 is 34.5v, so 5 is 5x34.6v=173v, and 173v x1.4a=242.2w and HLG-240H-C1400 output 89-179v and 1.4a, that will work good for 5pcs 048 1212 in series, even if you go with HLG-320H-C1400, you still get the same power consumption but higher cost, that's not cost effective (:
 
Stephenj37826

Stephenj37826

Well-Known Member
Just buy the CV HLG 240H 36A/B and you'll get what you want. If you buy A it's as safe as series. Just adjust the voltage when the light is cold until the wall usage drops then adjust up slightly until you get full power........ To check if it's working correctly unhook a cob and see a drop in wall wattage indicating it is limiting the voltage (working correctly).

If you buy HLG 185H 36A you'll get 240 watts at the wall basically.

I am in the mindset of figuring out how much I will dim. That's what determines my driver selection. IE if I never plan on dimming below 175 watts I would buy the 320H-1750A driver and have the extra power if I need it /want it / grow into it as my experience gets better.
 
wayward1

wayward1

Member
I'm with geyapex and suggest the HLG-240H-C1400 which let's you run the cobs in series. I'd also go with the b version so you can dim right down for when the plants are young.
 
R

rocho

Well-Known Member
Geyapex Technology said:
the typical voltage of one 048 1212 is 34.5v, so 5 is 5x34.6v=173v, and 173v x1.4a=242.2w and HLG-240H-C1400 output 89-179v and 1.4a, that will work good for 5pcs 048 1212 in series, even if you go with HLG-320H-C1400, you still get the same power consumption but higher cost, that's not cost effective (:
Click to expand...
As cobkit said some post breore yours actual 1212 voltage is 36.7v not 34.6....183.5V wiring in series and 257W that's my problem!!


CobKits said:
citi tool: http://ce.citizen.co.jp/lighting_led/en/products2/notice_Simulator_ver5.html

its 36.7V at 1400 mA

View attachment 3829168

you can also look at the datasheet

View attachment 3829170
Click to expand...
 
R

rocho

Well-Known Member
Geyapex Technology said:
please refer to attached data sheet (:
Click to expand...
Sorry but you re wrong. Probably 50°C could be a realistic cob temperature mounting on a cpu heatsink cooler.You could have 34,6v only if you run cob at 700ma ( 25°C) or 900ma(50 °C)....at 1.4A you would get36,7V at 25°C and 36,1 v at 50°c...are you a grow light manufacter? isn t it?
Refer to citizen tool pleaese http://ce.citizen.co.jp/lighting_led/en/products2/notice_Simulator_ver5.html

HLG-240H-C1400 could give max 179v(182 with opened circuit) and 200w max...so that s not so clear for me if it s sweetable or not in that case...any real and personal experience about?
 
Last edited:
K

K1ngK0nggg

Member
Hi all,

what about new version 6 1212C4's?
they've got lower voltage @ all currents, could HLG-240h-c1400 take 5 of those COB's safe?
 
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