You need to make sure the over-voltage and over-current settings aren't too low (the actual voltage and current are the top two parameters).
If you've got your V set to 36 and A to 1, but OPP set to 35W, it'll just shut off (cuz it's really wanting 36W)*.
So when I've got a COB on there, I'll set the V to 36 and the OVP to 37 (or 36.8, for example) - so if it starts spiraling out of control - as soon as it start wanting to pull 37V, it'll shut off,
The same is true for OCP (over current) and OPP (over-power (watts)).
That is the strange part. I can increase the voltage output from the power supply to whatever as well as the ovp and ocp. I can't get the voltage to increase. It appears it is operating in CC mode. I haven't read how to alter or engage CV or CC modes.
So, if the COB wants 36V, it’s the S-OVP @ 35.5 limiting it. Try going higher.
Increasing the input voltage from the power supply and setting OVP value higher does nothing. I don't get it.
(EDITED TO INCLUDE) ...
36v isn't the target voltage. It's actually 34v. The picture illustrates the disparity in voltage I'm getting no matter how high I adjust the settings on the voltage regulator. I'm beginning to wonder if it is faulty.
Last edited by electrok-d on Sat May 12, 2018 6:37 pm, edited 1 time in total.
Does the display say it's in cc mode? Maybe you have to change it to CV mode to adjust the voltage. This is just a guess though.
There is no information in the instructions on how to do that or whether or not it is even possible. It is likely that it switches between cv and cc modes internally, based on currently onknown factors.
*edited to add newly discovered info*
I think I found the reason behind the voltage regulator switching to cc mode. The power supply is cv by default and rated at 36v/15amps. The cob led units will apparently take as much amperage as given until they blow up. The regulator is limiting current by switching to cc mode in order to protect them. That's great.
What I don't quite understand is why I can't increase the voltage in this case though. I can max the output voltage on the power supply and set it really high in the regulator, but no matter what I do, it remains slightly under 30 volts.
There is no information in the instructions on how to do that or whether or not it is even possible. It is likely that it switches between cv and cc modes internally, based on currently onknown factors.
*edited to add newly discovered info*
I think I found the reason behind the voltage regulator switching to cc mode. The power supply is cv by default and rated at 36v/15amps. The cob led units will apparently take as much amperage as given until they blow up. The regulator is limiting current by switching to cc mode in order to protect them. That's great.
What I don't quite understand is why I can't increase the voltage in this case though. I can max the output voltage on the power supply and set it really high in the regulator, but no matter what I do, it remains slightly under 30 volts.
I was reading on this thing some, and some people report that it switches from cc to cv automatically. Maybe it depends on how the stuff is wired. Maybe put a secon cob wired in series, test, then parallel, test again? Have you tried something like that?
Have you tried to contact the company, and ask them if you can switch cc and CV manually, or ask them what makes it switch? Some people slain you can do it manually, but they never said how.
*edit*
Or maybe the cheap cob is why it won't go higher. QC isn't good on those. Do you have any strips or cobs that have good QC?
