LED Dimming has been a common lighting requirement in Today's Professional LED Lighting / Interior Design. But for many, who are in LED Lighting Design / Interior Design / M&E Consultant, they might have found different Reliability and Performance problems when using Traditional Incandescent Dimmers (a.k.a, TRIAC Dimmers) to realize LED Dimming. There are already many websites saying that LED Dimming requires a new type of Dimmer. It's our intention to create our Application Video Library to explore different LED Dimming topics so that the relevant parties would be able to visualize it than simply reading another technical article online.
To provide a simple-to-use and cost-effective LED Dimming solution for customers’ transition to Professional LED Lighting effect, our 450W / 220 - 240Vac Digital Phase Cut LED Wall Dimmers are designed for LED Deep Dimming. Not only are backward compatible to single Live-wire operation for TRIAC Dimmer Replacement, our LED dimmers have Other Benefits from Digital Processing, which upgrades Single Pole Dimmers with new features matching with today’s market needs.
Gen 3 LED Phase Dimmer
With our past effort, our Gen 3 LED Dimmer, DZ3G450DIAL, is officially listed on the leading Professional LED Lighting Manufacturer, SORAA®’s Compatibility List for its Professional LED Lamps. Not only that, our different solutions have been using in multiple projects by some prestigious customers, who encountered LED Dimming problems for their Interior Design projects. By working with LED Driver and Lighting Fixture Suppliers, Designers and Electricians, even Retailers, we've gained a comprehensive end-to-end understanding of the overall LED Dimming / Professional LED Lighting applications. This extensive Marketing experience also fuels our continuous product innovation for LED Dimming applications!
- To understand more about SORAA® Professional LED Lighting, please refer to our Recommended Product Sections: Professional LED Lamps and Track Light (ART-Series).
Gen 4 LED Phase Dimmer
To address Hospitality, Office, Retail and Residential Lighting applications, our new Gen 4 Multi-Way LED Dimmer, DZ4G450MULT, does not only integrate Light On/Off, Deep Dimming Up/Down and Scene-Setting features to a single button, but it also has a Unique Feature of being able to Connect Multiple LED Dimmers to Control the Same set of Lighting Fixtures at Different Locations, without SPDT switch nor Mobile APP . This is something not found in the textbook and is a useful new product to the Lighting society!
To facilitate our customers to browse our Videos, we've selected several more important ones as follows:
- LED Dimming Overview: Minimum Power Requirement for Deep Dimming, LED Dimming Problems with TRIAC Dimmers
- LED Dimmable Drivers (Phase-Cut / TRIAC):
- LED Dimmable Drivers (0/1-10V) : "0 -1 Inconsistency" in 0/1-10V Control Part I / Part II
- Shielding Suggestions for Using 1-10V Controller with Electronic Ballast (T5) Applications
- 12Vac Transformer Backward Compatibility Discussion using Magnetic & Electronics Transformers
- SORAA® Professional LED Lamps:
- Multi-Way LED Dimmer: Comparison with Traditional Two-Way Approach, DZ4G450MULT Operations Walk-through
- Tunable White & Colour Temperature Control Neutral-to-Warm (1800K-4000K) vs. Dim-to-Warm
Dim-to-Off Inconsistency & Illustration with Mean Well & TCI 0/1-10V Dimmable Drivers
In the last video, we used the TCI DC MINIJOLLY # 122400 and the Legend Tech DZ1G1TEN 1-10V Controller to show that the driver could switch off the light (Dim-to-Off) when we hit below 1V across the DIM+/- input for the driver. This video deep dives into the Dim-to-Off features and uses two drivers to compare their different Dim-to-Off trigger voltages, which helps to show the inconsistency of the Dim-to-Off feature commonly found with 0/1-10V dimmable LED drivers in the market.
Depending on how the current flowing through the 0/1-10V controllers, the controllers can be classified as Sink / Source type of devices.
A Sink type controller gets a very small current of current from the driver, approximately in the magnitude of 0.1mA. While the DZ1G1TEN can sink 50mA or more current, this means 500+ drivers can be connected to a single controller simultaneously. The classic Sink type of controller is actually the Potentiometer or Variable Resistor.
A Source type controller, on the other hand, has an independent source of current. Thus, these types of controllers usually have 4 wires attached, 2x DC dimming control & 2x its own AC power (Live / Neutral).
In the first part of the video, we use a standard power supply as the current source to flow through the potentiometer (Source mode), which feeds the voltage to the DIM+/- of both the Mean Well LCM-25 & TCI #122400 simultaneously to measure the voltage at which each driver would reach its Dim-to-Off trigger point. From the tests, we saw that TCI driver reached Dim-to-Off at a voltage just below 1V threshold, while the Mean Well driver reached Dim-to-Off at a voltage just above 0V.
In the second part of the video, we disconnected the power supply from the potentiometer, which left only the Variable Resistor to connect to the DIM+/- of the drivers. Configured as a Sink mode, we showed that the same dimming & Dim-to-Off behavior can be achieved, which also means that both drivers can support Sink & Source types of 0/1-10V controllers.
The inconsistency can become a practical problem when either a driver or a controller has been replaced and a different Dim-to-Off behavior is encountered from the new product combination. Again, we emphasize that Dim-to-Off (i.e. Switching off the driver’s light output using a dimmer) is No equivalent to actually cutting off the AC Power to the driver.
Thus, in the next installation, installers should consider/advise the end-customers if Dim-to-Off is really necessary & the possibility of inconsistency issue among the driver and controllers to avoid false expectation.