Suggest Well LED motorists provide dimming features to match the interest in contemporary illumination control. Suggest Well is rolling out a line that is wide of drivers with advanced dimming features for LED illumination. Numerous models just like the HLG, NPF and LPF are designed with Suggest Well’s 3-in-1 dimming function. This ‘3-in-1 dimming‘ enables an individual to dim LEDs with three various kinds of sign: Passive Resistance, 1-10VDC (0-10V) and Pulse Width Modulation (PWM). This feature that is dimming freedom to help make the end-application design much easier.

Potentiometer: Simple resistance dimming with a few shortcomings

Among the easiest & most affordable methods to dim aided by the Light-emitting Diode drivers is to utilize a simple 100k Ohm potentiometer. This really is a adjustable resistor that easily attaches to your dimming wires for the economical solution. See figure 1 for just how to connect a potentiometer up to your dimming wires of A mean Well HLG.

There are two main main downsides to this types of dimming that have to be considered for the conclusion application design. First, the response that is dimming extremely shaky and never excellent in the event whenever there are numerous motorists linked to one potentiometer. Second, there isn’t a lot of a selection for a framework dish or option to result in the potentiometer completely integrate because of the design that is aesthetic of sleep of the application or home.

These issues ensure it is therefore some users might choose to look below at electronic potentiometers or dimmers that are 0-10V. 100K Potentiometers are superb for smaller jobs where you simply desire a change design knob for control, or they truly are great if you are just testing the dimming range or production of Light-emitting Diode lights.

0-10V or 1-10V Dimming

0-10V dimming is really a style of dimming where a dimmer can be used to change the control sign for the dimming wires from 1-10VDC to change the Light-emitting Diode brightness. In 0-10V or 1-10V dimmable motorists there clearly was a 10v signal that moves through the Dim (+) line towards the Dim (-) line. If the cables are kept untouched (with no dimmer) the sign are at 10V, hence 100% light production. Exactly the same is usually to be said when you yourself have a dimmer turned and connected up most of the means. Once the dimming sign is paid off, the light output will decrease until hitting the minimum production.

That is where 0-10V and 1-10V drivers that are dimming different. 1-10V lets the dimming sign get right down to 1V or 10% light output. This implies the light is only geting to go down seriously to 10%, consequently there may nevertheless be some noticeable light and power checking out the device. A switch at the AC main lines is needed to shut off power when the light is not needed for this reason. 0-10V dimmers on the other side hand get right down to .57V or 5.7% light production before cutting down energy.

The production status just isn’t guaranteed in full once the sign is lower than 1V for the Mean perfectly motorists. A switch setup like described above will assist the circuit and keep it switched off you should definitely being used. The normal dimming reaction for a 1-10V dimming signal is shown below:

The thing that is last note may be the Mean Well motorists need a present sinking dimmer, not merely one providing you with the 0-10V sign currently. We carry a wonderful sinking that is current dimmer that works great with suggest Well motorists. The easy design simply has to be wired as much as the dimming wires and works to efficiently dim LED lights. The dimmer additionally includes a real face dish for wall surface mount installments and is available in rotary knob or slider choices. All you have to do is link the wire that is gray the dimmer into the Dim (+) therefore the purple cable in the dimmer towards the Dim (-).

When you yourself have a controller with an output that is 0-10v consider utilizing the ELN that can perhaps work with that sort of circuit.

PWM Dimming Controls

The final dimming option is to make use of a PWM sign produced by way of a dimming switch or control. Remember that this doesn’t make the driver have output that is PWM the PWM power from Mean Well, but instead simply controls the light production through the dimming wires.

The control in this particular dimming could have cables or terminals that will connect in to the motorist dimming cables. Whilst the responsibility period is paid off the Light-emitting Diode controller will reduce the production for the LED motorist. an excellent exemplory case of this will be using an Arduino to output a PWM sign to your dimming wires.

Exactly why are the LEDs dimming at an uneven or rate that is rapid?

Often the reply to this dilemma will likely be that the Light-emitting Diode motorist that has been tested is under loaded. Many dimmable Mean Well motorists work by decreasing the amplitude associated with the current being given towards the Light-emitting Diode lights.

The LED driver needs to be loaded as close to the rated maximum power output as possible for the dimming to be smooth and to match up with the motion of the dimming switch. I would suggest around 90-95per cent. Lower than this additionally the dimming performance decreases and there’s some dead area.

The below graphs offer a visualization of the way the dimming shall act with Light-emitting Diode motorists at various load capabilities: (a) Led motorist packed to 100per cent – soft and also dimming

(b) LED motorist packed to 70per cent – Nothing happens until dimmer switch goes below 70%

(c) LED driver packed to 30per cent – Nothing happens until dimmer switch goes below 30%

Then there could be a problem with the dimming switch if your LED driver is properly loaded as suggested above. The most typical issue is individuals attempting to use a typical TRIAC kind wall surface mounted dimmer by having a Mean Well Led motorist which has the 3-in-1 dimming feature. Just the Mean perfectly PCD a number of constant present Light-emitting Diode motorists are suitable for TRIAC dimmers.