A two-wire control circuit, usually violet and gray, alongside the power wiring. At 10 V the driver runs full output; as the signal drops, output falls to the driver's minimum, typically 1 to 10 percent, at around 1 V. Most drivers source the current and the control sinks it. A 0 V signal does not turn the fixture off, so a relay or switch on line voltage is needed, and long runs and mixed brands cause uneven low-end dimming.
Pull the violet and gray to the room controller, it's 0-10V dimming with a separate relay for on and off.
Also heard as
- zero to ten volt
- 0-10 V dimming
- 1-10V
Related terms
Driver
The electronic power supply that converts line voltage into the regulated current or voltage an LED needs.
DALI
Digital Addressable Lighting Interface: a two-wire digital lighting control bus where each driver has its own address.
Dimming curve
The relationship between a dimmer or control signal and the light output it produces.
Pop-on
An LED dimming fault where fixtures stay off at low dimmer settings and then suddenly turn on at a higher level.