How the node talks to the driver.
Learning Track · Module 3: Controllers · Step 17 of 101
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| Interface | What it does | Data back |
|---|---|---|
| 1–10 V / 0–10 V | An analogue voltage sets the level. Called 1–10 V in Europe (IEC 60929 Annex E), 0–10 V in North America (ANSI C82.11 / NEMA). | None |
| DALI (IEC 62386) | Digital two-wire bus | Status, basic faults |
| DALI-2 | Certified interoperability (DALI Alliance) | Status, faults |
| D4i | DALI-2 inside the luminaire, with fixed IoT data | Energy, hours, faults, luminaire data |
What D4i adds
- IEC 62386-251: luminaire data: maker, model, GTIN, year, rated power, CCT.
- IEC 62386-252: energy reporting from the driver.
- IEC 62386-253: diagnostics: hours, starts, temperatures, voltages, failures.
- IEC 62386-250: auxiliary power to the node.
With D4i, a node can fill the asset register automatically.
Note
USA: 0–10 V is the default on US roadway luminaires and works well with NEMA nodes. Ask for DALI or D4i if you want driver data. Europe, Middle East, South Asia: 0–10 V is cheap and simple, but gives no data back. For new luminaires, choose DALI-2 or D4i drivers.
Sources
- IEC 62386-101 and -102 DALI: system and control gear
- IEC 62386-250, -251, -252, -253 (D4i data and power)
- IEC 60929 Annex E Control interface for controllable ballasts
Changes: 30 October 2026: First publication: guides for Europe, the Middle East, South Asia, and the USA; failure library; tender clause library; comparisons; tools; downloads. See the changelog. Found a mistake? Report it.