zmVault/lighting-controls.md

id, aliases, tags, title

id	aliases	tags	title
		authorship/original destiny/permanent status/incomplete topic/construction/electrical type/encyclopedia	Lighting Controls

Lighting Controls

Protocols

Occupancy/Vacancy Sensor Technologies

• Passive Infrared (PIR)
• Ultrasonic
• "Dual Tech" (PIR and ultrasonic)

Switching/Communication

• Occupancy
• Vacancy
• Daylight

Line Voltage

120--347VAC

Low Voltage

24V Class 2 control circuit

Digital

Digital Addressable Lighting Interface (DALI) ^dali

Digital Addressable Lighting Interface

Open protocol defined by IEC 62386.

Includes wired (via twisted-pair-cable and 8P8C "RJ-45" connectors) and wireless topologies.

Proprietary DALI Clones

There exist several proprietary control ecosystems with feature sets and topologies identical to DALI.

I suspect these exist to skirt the cost of DALI's testing requirements.

%% I'm less sure this is an apt description. The examples below are typical of some generic system, but it doesn't seem to be DALI. %%

Examples include:

• Legrand Wattstopper Digital Light Management (DLM)
• Acuity nLight®
• Lutron Quantum¹
• [Lutron Athena]²
• Cooper Greengate

Digital Multiplex (DMX) ^dmx

DMX512

DMX512-A defined in ANSI E1.11-2008

Shielded twisted-pair-cable with XLR or 8P8C ("RJ-45") connectors

See Also

[!quote] BACnet BACnet is a communication protocol for building automation and control (BAC) networks. It is defined by ANSI/ASHRAE 135 and ISO 16484-5.

twisted-pair-cable

Dimming Technologies

• Triac (Line voltage dim)
• Analog (0-10V dim)
• Digital
• Wireless

All these control methods are likely to appear in drawings.

0-10V Dimming

0-10 V lighting control

In conduit:

Southwire 64350501
SIMpull® 16/2 Low Voltage Signal Cable, Blue

This method is compliant with nfpa-70_725_control-circuits#725.136(I) Other Applications., which allows control circuits to share a raceway with power conductors if either all of the power conductors or all of the control conductors are themselves in a raceway, or in metal-sheathed, metal-clad, non–metallic-sheathed, or Type UF cable.

Triac Dimming

Triac dimmers work by chopping the AC power waveform. This reduces the output power, so the lamp dims.

[!info] "Triac" refers to the electronic component that does the wave-chopping.

Subtypes

There are two subtypes based on which side of the wave is chopped.

• Magnetic Low Voltage (MLV)** -- AKA "Leading Edge" or "Forward Phase"
• Electronic Low Voltage (ELV)** -- AKA "Trailing Edge" or "Reverse Phase"

Important

The "magnetic" and "electronic" of MLV and ELV are holdovers from pre-LED days. They have nothing to do with how they are used today. They are, unfortunately, the most common terms.

Important

"Triac" is sometimes used (in contrast to ELV) erroneously to mean MLV

There also exist "universal" dimmers, which can be switched between the two subtypes.

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1. Maybe not. Sensors show 24V wiring. ↩︎

2. Can not verify. Website is down at time of writing. ↩︎