0-10v not dimming

Status
Not open for further replies.
B

billybandit

Member
Location
Greensboro NC
Occupation
electrical contractor
I recently installed 2 separate 0-10v circuits of 8 LED high bay lights per circuit in a brand-new barn. Power was not turned on until nearly 2 months later due to building inspections failure. When power was turned on, we discovered that the dimmers would function only as on/off but would not dim. I used Leviton WSD20-9D0 0-10v receiver relay area controllers with input from their Enocean wireless switches. We determined that both switches and receivers were functioning correctly. When touching the lavender and gray low voltage wire leads from the receiver, rather than dimming, all the lights on the circuit would turn off. Leviton says they should dim.

So, the questions I am asking ---, did we mis-wire the 0-10v control cables? Reverse polarization? Open circuit? Did we receive 16 bad lights from the manufacturer (I seriously doubt it)?

Both circuits are responding alike. There are no shared wires between circuits.

Has anyone had this experience? How did you fix?
 
Could you or did you try it with out the Enocean wireless switches ? My understanding is the gray and lavender wires are just on the other switch, right?
 
If i am understanding your question, the lavender/gray leads originate from the WSD20-9D0 receiver relay at the mains panel. There are no wires on the Enocean switch.
 
As a test and per Leviton support , I touched the lavender/gray wires together with the expected result being dimming. Instead they turned the lights off.
 
The ones I have done the gray and lavender wires go from the light to the switch.

I've not used that WSD20-9D0 receiver relay perhaps you could try a switch as I described to see if that works. At least you would know it's not the light
 
Last edited:
Are they going totally off? A dead short or reverse polarity on the dimming loop would only take them to maximum dim, (whatever percentage the factory programed it at).
 
Lights turn off rather than dimming when lavender/gray are touched together.
Leviton says they should dim down to minimum preset.
I you are not familiar, FYI, the Enocean switches are wireless transmitters.
I have used this system numerous times in other buildings and never encountered the current situation. It is usually very clean and instantaneous in connecting and operating. And I have had no service issues.
 
Thanks Buck! That's a good idea to test with a hardwired switch. Will do. My great concern is that we incorrectly wired the control cable to all those fixtures 24 feet in the air.
 
I suggest measuring the DC voltage across the lavender and gray wires as the dimmer is operated over its range to confirm that it's moving from about 10V down to 1V or less. If you don't get 10V with the dimmer up high, then disconnect the wires from the dimmer to confirm that the fixtures are supplying 10V across the wires, as hillbilly1 mentioned.
 
You might verify that the violet/white wire from the WSD20-9D0 is connected to the lights and not the violet wire.
The violet wire from the WSD20-9D0 is a 0-10V input, not an output. Leviton says to tie the violet wire to the 12VDC red wire when it's not being used for wired dimmers or other controllers, instead of just leaving it floating.
 
synchro said:
You might verify that the violet/white wire from the WSD20-9D0 is connected to the lights and not the violet wire.
The violet wire from the WSD20-9D0 is a 0-10V input, not an output. Leviton says to tie the violet wire to the 12VDC red wire when it's not being used for wired dimmers or other controllers, instead of just leaving it floating.
Click to expand...
Thanks Synchro -- your suggestion was a key ingredient to reaching a solution. IN addition to yours, we discovered some crossed 0-10v wires as well as incorrect programming of the Leviton 0-10v relay receivers. All were corrected and the system seems to be functioning as hoped for.
Thanks to all.
 
Status
Not open for further replies.
Top