D4i DALI-2 Dimmable LED Driver

Product Introduction

The D4i DALI-2 Smart Dimmable LED Driver designed for intelligent constant voltage LED lighting applications. Supporting DALI DT6 and DT8 control modes, it provides precise digital dimming and CCT adjustment for professional lighting systems. 

With NFC programming technology, parameters can be easily configured without opening the driver, improving installation efficiency and flexibility. 

Available from 30W to 1000W power options, this DALI-2 D4I Dimmable LED Driver delivers stable output performance for commercial lighting, architectural lighting, and smart lighting projects.

Specification

Features 

• Output: Constant Voltage

• Range: 120-277VAC

• PFC design: Built-in active PFC function

• Efficiency: Up to 95%

• Protections: Short circuit / Over load / Over temperature

• Heat dissipation: Cooling by free air convection

• Waterproof performance: Full aluminum protection housing, for dry, damp & wet locations.

• Design features:

  The dimming curve is adjustable. Multiple frequency options. Comes with DALI bus power supply and auxiliary power supply. It has power status detection function (D4i function) and Lamp temperature detection. Driver parameters can be adjusted by APP.

  Bus power specification: 18V, 50mA, capable of supporting approximately 25 units of our company's DALI power supplies (signal line current loss of our company's DALI power supply < 2mA).

  Auxiliary power specification: 24V, 125mA, 3W.

• Dimming function: DALI-2 digital dimming, compliant with D4i intelligent luminaire interface specification.

• Min load: Min load is 10%

• Dimming range: 0.1%-100%(244Hz), 0.2%-100%(800Hz), 0.3%-100%(4KHz) and 0.8%-100%(20KHz).

• Application: Suitable for the application of LED lighting

• Warranty: 5 years warranty

• Other: Flicker-safe dimming

• Certificate：CE,UKCA,RoHS,Reach

Product Advantage

1. DALI-2 D4i Smart Control

Built-in 18V DALI Bus, supporting switchable DT6 / DT8 modes for dimming and tunable white applications.

2. 4KHz Flicker-Free Dimming

Delivers smooth 4KHz flicker-free dimming with Dim-to-Dark down to 0.1%, ensuring precise low-level lighting control. Designed to comply with IEEE 1789-2015 flicker-safe recommendations.

3. Built-in Auxiliary Power

Built-in 24V / 0.125A auxiliary power and 18V DALI Bus simplify smart lighting system integration.

4. NFC Programmable Settings

Configure DALI address, output voltage, dimming curve, frequency, temperature control, and life warning via ProNFC APP or NFC Handheld Device.

5. High PF & Reliable Protection

Available in 30W–1000W, 120–277VAC, with PF >0.98 and short-circuit, overload, and over-temperature protection.

Applications

• Commercial & Office Lighting

• Hotel & Hospitality Lighting

• Retail & Showroom Lighting

• Smart Building & DALI Systems

• Tunable White & Architectural Lighting

• Panel, Linear, Downlight & Ceiling Fixtures

Connecting Diagram

DALI-2 D4I Dimmable LED Driver - Constant Voltage Output

FAQ

1. How do I choose the right Dimmabel LED driver for my fixture?

Consider the fixture’s power, LED voltage/current, dimming requirements, installation space, and control system.

2. Does the driver support DT6 and DT8 applications?

Yes. It supports switchable DT6 / DT8, making it suitable for both standard dimming and tunable white lighting systems.

3. What is the advantage of 0.1% Dim-to-Dark dimming?

It provides smoother low-level dimming and better lighting control for applications requiring precise brightness adjustment.

4. Can NFC be used for driver commissioning?

Yes. ProNFC APP or an NFC Handheld Device can configure addresses, output settings, dimming curves, PWM frequency, and other parameters.

5. Do you support OEM & ODM customization for special dimming requirements?

Yes. We support customized dimming functions, output voltage, power ratings, protection features, and housing dimensions based on your project requirements. Private-mold development is also available for customized lighting solutions.

6. What certifications are available for shengchang (SCPOWER) LED power supply?

Shengchang (SCPOWER) offers a broad range of certifications across its LED power supply portfolio, including UL, cUL, ETL, FCC, CCC, RCM, SAA, ENEC, CE, CB, BIS, PSE, ICES-005, ErP, WEEE, DALI-2, D4i, Class 2, Class P, TYPE HL, UKCA, RoHS, REACH, and ISO 9001. Certification availability varies by product model, specification, and target market. Please contact us to confirm the certifications applicable to a specific product.

7. What information is needed for a bulk LED driver quotation?

Please provide the power range, input voltage, LED output requirements, dimming protocol, quantity, target market, certifications, and application for an accurate quotation.

8. Can you support samples and mass production for lighting projects?

Yes. We support sample evaluation, technical documentation, parameter configuration, certification requirements, pilot orders, and mass production for OEM & ODM and project customers.

9. How can I request a quotation?

Send us your LED specifications, quantity, application, and customization requirements for a product recommendation and quotation. You can also fill out our inquiry form with your project details, and our sales or technical team will review your requirements and respond within 24 hours.