Ballast 1 is not dimming using the Profilux EVG-AP-2F

[bradjenks]

I have 2 Meanwell 60-48d ballasts connected to the ballast 1 port of a Profilux EVG-AP-2F Ballast Control Board. I'm also using a 60-48d ballast connected to the ballast 2 port and it dims fine. The ballast 1 turns on/off just fine but runs at 100% power whether it's set to 1% to 100%. I doubled checked the connections and everything appears fine. I assume it's pin 2 on the x105 on the board that controls the dimming, but it certainly appears connected.

When I first implemented the board it was working fine and just recently noticed that it had stopped. Any suggestions on how to fix this or do I just have a bad board?

[GHL Support]

We recommend to do the following: exchange ballast 1 at port 1 (which can't be dimmed)
with the ballast working at the other port 2 (by changing the connections accordingly).

[bradjenks]

I switched the ballasts between port 1 & 2 and still have the same problem - port 1 does not dim while port 2 dims fine. I also re-wired pins 1-6 to make sure I don't have a connection problem there.

Any other suggestions? Do I just have to get a new Ballast Control Board?

[GHL Support]

Do you perhaps have a voltage meter?
Then you could measure if a voltage comes out at x104 at port 1. E.g. for 50% dimming it should be around 5V.

[bradjenks]

Thanks for the suggestion. I tested the voltages at 1%, 25%, 50%, and 100%. Ballast 1 is getting 11.3V all the time. Ballast 2 is getting 1.1V, 3.2V, 5.5V and 9.9V respectively.

[Blahenazo]

that can mean 2 things

1) configuration issue
your voltage of the L poort is wrongly configured ( easily checked in PLC ) and manual illumination can help to trouble shoot.
or you could switch the illumination channels in PLC and retest )

2 ) broken profilux
your L port always outputs 11,3 , no matter what you configure in the profilux
which would indicate a faulty L port

[bradjenks]

Good suggestions. I checked the configuration in PLC. I'm using L3L4 for a Profilux SimuL bar (and dimming both colors works fine) and L5L6 for my LED drivers. All 4 L ports are configured the same, min 1 V, max 10 V. I swapped the two and plugged the SimuL bar into L5L6 and it works fine, both colors dim individually. I believe that means that both L5L6 are working properly. I then connected the EVG-AP-2F to the L3L4 ports and got the same results that I was getting before, ballast 1 dims, ballast 2 does not.

I think that confirms to me that there is a problem with the EVG-AP-2F board.

[Wirus]

Ballast 1 is getting 11.3V all the time.

Is it possible you have interchanged Pin 1 (permanently 12V - black cable) and Pin 2 (dim channel #1 - brown)?
Check if pin 1 output lover voltage than 10V @ 50% dimmming

[bradjenks]

Double checked wiring. Pin 1 is black and pin 2 is brown - no loose wires. I couldn't get my volt meter probes in the holes so will have to check the voltage by pulling out the wires. Didn't have time to do that today.

[Matthias]

there are these options:
- cable is defective
- wiring is wrong
- EVG-AP is broken (somewhere a short-circuit)

[bradjenks]

It appears that the problem lies with the EVG-AP. I was able to test voltages in the wiring today. The black wire is putting out 11.5V. The brown wire voltage does change with dimming. 5.5V @ 50%. 9.96V at 100%. 3.2V at 25%.

[Wirus]

Maybe there is a short circuit between Pin 1 and 2 of X105. Have a look at the bottom side of the circuit board, maybe there is an unwanted solder bridge at this pins.