vault backup: 2025-12-19 13:13:11
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---
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id:
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aliases: []
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title: Lighting Controls
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tags:
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- authorship/original
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- destiny/permanent
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- status/incomplete
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- topic/construction/electrical
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- type/encyclopedia
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title: Lighting Controls
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---
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# Lighting Controls
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## Protocols
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## Sensor Types
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* Occupancy
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* Vacancy
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* Daylight
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* Partition
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## Occupancy/Vacancy Sensor Technologies
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@@ -22,9 +26,10 @@ title: Lighting Controls
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## Switching/Communication
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* Occupancy
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* Vacancy
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* Daylight
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Dimming Terms
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* **trim** --- refers to the minimum and maximum brightness levels
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(low-end and high-end trim respectively)
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a dimmer will reach. Usually adjustable.
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### Line Voltage
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@@ -36,46 +41,38 @@ title: Lighting Controls
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### Digital
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#### Generic "Standalone"
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The examples below are typical of a generic system,
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with functionally identical features and topologies.
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Includes wired (via [[twisted-pair-cable]] and 8P8C "RJ-45" connectors)
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and wireless (via RF) communication.
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* [Legrand Wattstopper Digital Light Management (DLM)](https://www.legrand.us/solutions/digital-lighting-management)
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* [Acuity nLight®](https://nlight.acuitybrands.com/overview)
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* [Lutron Vive](https://commercial.lutron.com/us/en/commercial-systems/vive)
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* [Cooper Greengate](https://www.cooperlighting.com/global/brands/greengate)
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#### Digital Addressable Lighting Interface (DALI) ^dali
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[Digital Addressable Lighting Interface](https://en.wikipedia.org/wiki/Digital_Addressable_Lighting_Interface)
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Open protocol defined by [IEC 62386](https://www.dali-alliance.org/standards/IEC62386.html).
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Includes wired (via [[twisted-pair-cable]] and 8P8C "RJ-45" connectors)
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and wireless topologies.
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##### Proprietary DALI Clones
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There exist several proprietary control ecosystems
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with feature sets and topologies identical to DALI.
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> I suspect these exist to skirt the cost of DALI's testing requirements.
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4-Conductor Class 2 control circuit
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%%
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I'm less sure this is an apt description.
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The examples below are typical of some generic system,
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but it doesn't seem to be DALI.
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Lutron's QS bares some resemblance to DALI.
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%%
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Examples include:
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* [Legrand Wattstopper Digital Light Management (DLM)](https://www.legrand.us/solutions/digital-lighting-management)
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* [Acuity nLight®](https://nlight.acuitybrands.com/overview)
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* [Lutron Quantum](https://www.lutron.com/us/en/controls/systems/quantum)[^1]
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* [Lutron Athena][^2]
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* [Cooper Greengate](https://www.cooperlighting.com/global/brands/greengate)
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[^1]: Maybe not. Sensors show 24V wiring.
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[^2]: Can not verify. Website is down at time of writing.
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#### Digital Multiplex (DMX) ^dmx
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[DMX512](https://en.wikipedia.org/wiki/DMX512)
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DMX512-A defined in ANSI E1.11-2008
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Shielded [[twisted-pair-cable]] with XLR or 8P8C ("RJ-45") connectors
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Shielded [[twisted-pair-cable]] with XLR or 8P8C "RJ-45" connectors
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#### See Also
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@@ -91,7 +88,6 @@ Shielded [[twisted-pair-cable]] with XLR or 8P8C ("RJ-45") connectors
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* Triac (Line voltage dim)
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* Analog (0-10V dim)
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* Digital
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* Wireless
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All these control methods are likely to appear in drawings.
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@@ -111,7 +107,7 @@ This method is compliant with
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which allows control circuits to share a raceway with power conductors
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if either all of the power conductors or all of the control conductors
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are themselves in a raceway,
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or in metal-sheathed, metal-clad, non–metallic-sheathed, or Type UF cable.
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or in metal-sheathed, metal-clad, non--metallic-sheathed, or Type UF cable.
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### Triac Dimming
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@@ -126,17 +122,21 @@ This reduces the output power, so the lamp dims.
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There are two subtypes based on which side of the wave is chopped.
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* Magnetic Low Voltage (MLV)** -- AKA "Leading Edge" or "Forward Phase"
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* Electronic Low Voltage (ELV)** -- AKA "Trailing Edge" or "Reverse Phase"
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* **Magnetic Low Voltage (MLV)** -- AKA "Leading Edge" or "Forward Phase"
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* **Electronic Low Voltage (ELV)** -- AKA "Trailing Edge" or "Reverse Phase"
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The "magnetic" and "electronic" of MLV and ELV
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are holdovers from pre-LED days,
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having nothing to do with how they are used today.
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They are, unfortunately, the most common terms.
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> [!important]
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> The "magnetic" and "electronic" of MLV and ELV
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> are holdovers from pre-LED days.
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> They have nothing to do with how they are used today.
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> They are, unfortunately, the most common terms.
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> "Triac" is sometimes used in contrast to ELV erroneously to mean MLV
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> [!important]
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> "Triac" is sometimes used (in contrast to ELV) erroneously to mean MLV
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There also exist "universal" dimmers,
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There also exist "universal" or "phase select" dimmers,
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which can be switched between the two subtypes.
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### Digital Dimming
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> [!info]
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> It is likely that "digitally dimmed" fixtures are 0-10V dimmed internally.
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