What Is 0-10V Analog Dimming?
0-10v analog dimming is one of the oldest and most straightforward control systems for lighting. The design controlled fluorescent lights but has since found use on LED lighting projects.
The "0-10v" refers to the volts delivered from the device. A value of +10VDC is supplied by a pair of wires, with one acting as the common wire. It also indicates the voltage range (see "Dimming" below).
The "analog" reflects the continuous signal supplied by the controller. An analog dimming LED driver differs from the on or off state of digital signal drivers.
The "dimming" indicates the controller's ability to alter the voltage value. As the "0-10v" describes, the flow can range from 0 volts through 10 volts. The LED will emit levels of light based on the volts it receives.
Low voltage allows this type of system to use a thinner wire with minimal voltage drop. That also means that a run will need one control wire for each channel (as well as the common wire). Long runs may require calibration to compensate for potential voltage losses. Keep in mind that AC power can affect the analog signal, resulting in flickering.
How Does 0-10V LED Dimming Work?
- Driver receives high-voltage input
- Driver converts it to low-voltage output
- Controller adjusts the level of output to LED lights
A 0-10V LED driver receives high-voltage power. That alternating current can range from 100v-277v. Once this input is received, the driver converts the alternating current to direct current. It also regulates the current, dropping the high voltage down to a low-voltage output.
A two-wire bus supplies signals from the source. One wire carries +10VDC. The second wire acts as the common.
The driver provides 100% output with an open circuit (no contact between the wires). It generates no voltage when that circuit is closed (when the wires make contact with one another).
The 0-10V LED dimmer alters the voltage output. It draws down the voltage output from +10VDC to the desired level. Adjusting the controller to 40%t will result in +4VDC, for example.
Where Should 0-10V LED Dimming Be Installed?
LED dimming is effective for:
- Energy management
Adjusting LED light intensity allows users to provide the illumination needed for work or play. Commercial settings may require various levels of light for the needs of employees or customers. Recreational venues can match lighting to the type of activity or the level of participation.
Lighting is an effective way to create an atmosphere or mood. Low-light settings provide comfort and intimacy in restaurants while medium-light enhances an outdoor event in a backyard.
LED dimming is also an effective way to conserve energy. Dimming work lights when an area is not in use will save money. A 0-10V dimmable LED driver provides lower levels of light during the day and higher settings at night when more light is needed.
How To Install/Wire A 0-10V LED Dimming Driver
Before installation, make sure that the optimal location is selected. Keep in mind the length of bus runs, as well as possible sources of signal interference.
Select the dimming LED driver that provides the output voltage, current and wattage needed for the LED lighting. Plastic or metal housing are suitable for application as well as for meeting codes. Models are available that provide one or more outputs for bus runs. Bottom and side outputs or flying leads provide options for wiring.
- Turn off power at the main breaker before beginning installation
- Connect high-voltage AC wiring where directed in the product diagram
- Connect low-voltage DC wiring where instructed in the product diagram
- Install other devices along the output bus circuit
- Verify proper connection
- Turn on power once installation is complete