warr40 Posted August 12, 2014 Share Posted August 12, 2014 hey everyone im building an add-on strip to a current t5 fixture that consists of 14 Royal Blue and 6 Violet. Using 2 Mean Well ELN-60-48D. The issue im having is with the Violet channel, it consists of 6 Violet and 2 Royal Blue XTE, when i go to tune the ELN driver to 700ma using the sw2 pot inside the driver nothing happens on my amperage meter, the only "dimming" im getting is through the 10v wall transformer im using. I added 2 more XTE royal blue to the string and i still have the same issue. Swapped drivers...same issue. I checked my wiring and have no shorts or loose connections, and the voltage reads out 31 volts when i checked. The 12 LED royal blue string works perfect with the same driver. So, I swapped out the 48D for a Mean Well ELN-60-27D, and it works perfectly....what gives. The thing is theMean Well ELN-60-27D only works with 8 leds and not 6 like the specs say. Im stumped, please help. Link to comment
farkwar Posted August 12, 2014 Share Posted August 12, 2014 What amps are you getting when you measure the violet string? You say nothing happens, what do you mean? Did you run full ELN current through the violet string? Im assuming they are 700mA violets. The ELN is "rated" for 1.3A but I've read some can start out as high as 1.8A. Did you measure actual voltage on the 10v transformer? Is it at any time putting out more than 10v, I would expect yes, since thats most likely the with load voltage. Does it put out 11 or 12 volts, 10.5?, at any time? Link to comment
warr40 Posted August 12, 2014 Author Share Posted August 12, 2014 Around .3 amps When i turn the sw2 the amperage does not change. The meter is in series The 10v wall transformer is putting out 8.9 volts. Yes i might have overdriven the violet channel at 1.2a but with the smaller driver theres no problem. Link to comment
jedimasterben Posted August 12, 2014 Share Posted August 12, 2014 If moving SVR2 does nothing when your meter is on DC amps, then you probably broke it, that little potentiometer is very fragile. Link to comment
evilc66 Posted August 12, 2014 Share Posted August 12, 2014 Agreed. Very common problem with those drivers. The SVR2 and SVR1 pots are very fragile, and can be damaged very easily when forced past their end stops. Link to comment
DC5 Posted August 12, 2014 Share Posted August 12, 2014 Yet another reason I will be ditching these very drivers. Looks like I found a buyer? Link to comment
warr40 Posted August 13, 2014 Author Share Posted August 13, 2014 ok stupid me was adjusting svr1 instead of svr2. How should i go about adjusting back svr1? Link to comment
Horerczy Posted August 13, 2014 Share Posted August 13, 2014 Set multimeter to dc voltage and do the same thing you were doing. Link to comment
warr40 Posted August 13, 2014 Author Share Posted August 13, 2014 Set multimeter to dc voltage and do the same thing you were doing. and the multi meter should be in parallel correct? Link to comment
farkwar Posted August 13, 2014 Share Posted August 13, 2014 Dont set it using your violet string.Set it with your royal blue only string to your 700mA first. and the multi meter should be in parallel correct? In line.You'll just pop your 10A multimeter fuse if you put it across your leads Link to comment
evilc66 Posted August 13, 2014 Share Posted August 13, 2014 You measure current in series (when you adjust SVR2). You measure voltage in parallel (when adjusting SVR1). You probably won't need to touch SVR1 as long as you can successfully set the current with SVR2. If you can't get up to the current you want (700mA in this case), you will need to tweak SVR1, as it's limiting the max voltage the driver can output (remember, as current increases, so does voltage). Link to comment
farkwar Posted August 14, 2014 Share Posted August 14, 2014 Go buy some multimeter fuses while Radio Shack is still open. Im predicting you pop a couple. Ill predict you pop a couple violets too. Buy a few extra of those before experimenting. Good thing about diodes is that current only flows one way. And when you pop one its usually the first one, and pops in the open state. Not like old fashioned christmas lights where you have to check the whole string. Link to comment
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