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Introduction to MOONS’ DALI LED Driver Applications by MOONS'

 
 

Introduction to MOONS’ DALI LED Driver

DALI Dimming Curve

According to DALI protocol, the dimming curve can be divided into two categories. One is the logarithmic dimming curve and another is the linear dimming curve. Both of them within the range from 0% to 100% are divided into 255 levels (level 0 to level 254).

The range from 0% to 100% is equally divided into 255 levels in terms of the linear dimming.
However, different from linear dimming curves, the logarithmic dimming curve is focus on subdividing low end output (output below 20%); to be specific, current under the circumstance that the output between 20% and 100% only takes 59 dimming levels.
Standard logarithmic dimming curve defined by DALI protocol is shown below. 1. Logarithmic Curve Please refer to above figure. In the case that the light is not dimed to off, percent taken by the minimum output current can be 0.1%. 2. Linear Curve the range from 0% to 100% is divided into 255 levels. In the case that the light is not dimed to off, percent taken by the minimum output current can be 0.4% and the difference between every two levels is 0.039%.

Introduction to S Series LED Driver

Amplitude dimming is available for currents above 200mA, while it is PWM dimming for 0~200mA. The corresponding frequency is 3.6 KHz.

Programming Methods

About MOONS’ Intelligent driver, two programming methods have been proposed successively.
They are cable programming and NFC (Near Field Communication)programming. Parameters of LED driver can be modified , such as output current, minimum dimming level and color temperature range, etc.

1. Cable Programming

When programming the driver through MCS ports, there is no need to electrify the driver.
When programming the driver through DALI ports, the driver should be electrified.
For more information about cable programming please click here.

2. NFC Programming

For NFC programming, there is no need to electrify the driver.
For further information about NFC programming please click here.

Firmware Upgrade

1. 64pcs S series DALI driver can be updated simultaneously through Smartkey and DALI power supply.

During updating process, all drivers should be electrified.
Unicast and broadcast upgrades take 2 and 4 minutes respectively.

2. 30pcs S series DALI driver can be updated simultaneously through Smartkey.

During updating process, all drivers should be electrified.
Unicast and broadcast upgrades take 2 and 4 minutes respectively.

firmware-upgrade-1

firmware-upgrade-2

Wiring Connection of Signal Line

Besides ordinary wiring method (bus), MOONS’ DALI driver also supports daisy chain wiring.

1. Ordinary Wiring Method

All signal lines of power supply should be connected to the bus, which makes it inconvenient for implementation.

2. Daisy Chain Wiring Method

Comparing with LED driver in the market, MOONS’ DALI LED driver owns 2 group DALI signal ports, which supports Daisy Chain connection. Daisy chain connection makes implementation to be easy and convenient.

Auxiliary Output Function

The LED driver is equipped with 12V/150mA auxiliary output to supply power for some DC input devices. In this way, one adapter can be spared. Note: DC device that in the figure is a MOONS’ two channels 0-10V WIFI module.

DALI Bus Power Supply Function

Some models of S series power supply have a 15V-100mA DALI bus power supply function.
Generally, DALI sensor works with DALI Master, and gets power from DALI auxiliary power supplier. However, DALI power supply is unnecessary for some application like close loop control system, one DALI bus power supply can be spared.
dali_bus_power_supply_function DALI±ports of the DALI driver can provide power (15V,100mA) to DALI sensor and dimmer. However, this kind DALI driver can not work with DALI Master. Because the additional power on the DALI bus will lead signal to be disturbed and DALI Master to be broken.

Over Temperature Protection (NTC)

Considering that heat dissipation effects of some lamps are poor, which is more likely to result in overheating of LED chip so as to further damage it, the LED driver is equipped with a MCS± port exclusively used to externally connect a NTC thermistor.
When the temperature of the lamp panel goes beyond temperature limited value you set, the LED driver will decrease the current to be 50%. When the risk (over temperature) removed, the driver will recover the output.

Matching NTC Thermistor

DALI DT8 Tunable White

According to DALI 209 protocol, using 1 DALI address to control lamp’s color temperature and intensity.1. Parameters Settings

The configuration of S series driver can be set by Touch Setting software or Smartkey Network software.
(1) Set driver’s output current value.
The program of the driver is based on Power (channel 1)÷Power(channel 2)=1, So please make sure power of the warm LEDs and cold LEDs are same. If the Vf of warm LEDs and cold LEDs are different, you can input different current value.
Ch1±connects to cold LEDs. Ch2±connect to warm LEDs.
For example:
Ch1: the Vf of warm LEDs is 35.7V, you can set current to be 700mA, the power is 25W.
Ch2: the Vf of cold LEDs is 25.4V, you can set current to be 1000mA, the power is 25W.
(2) Select dimming strategy to be DT8 CCT Driver.
(3) Choose dimming curve to be linear or logarithmic.
(4) Set the minimum dimming level, the minimum value is 0.1%.
If you set the value to be 10%, the minimum intensity percentage equals 10%.
(5) AUX Enable: enable or disable driver’s auxiliary output function.
If enable this function, the standby power dissipation>0.5W.
If disable this function, the standby power dissipation<0.5W.
(6) Physical CCT: input the value according to CCT lamp’s parameters.
(7) Logical CCT: the actual CCT range can be achieved by driver and CCT lamp.
For example: The physical CCT of LED is 2700K and 6500K according to CCT lamp’s parameters.
If you want the actual effect to be 3000~6000K, when driver works with CCT lamp, please set the logical CCT to be 3000K and 6000K.
2. Wiring Connection

(1) Ch1± connects to cold LEDs. Ch2± connect to warm LEDs.
(2) For this kind application, please ensure both DALI Master and control panel supports DALI DT8 function.
3.1 Configuration Video
3.2 Video Demonstration

DALI DT6 Tunable White

One dual channel DALI driver owns 2 DALI addresses, one DALI address is responsible for controlling two channel’s output to mix different color temperature. Another DALI address is responsible for total intensity controlling. 1. Parameters Settings

The configuration of S series driver can be set by Touch Setting software or Smartkey Network software.
(1) Set driver’s output current value.
The program of the driver is based on Power (channel 1)÷Power(channel 2)=1, So please make sure power of the warm LEDs and cold LEDs are same. If the Vf of warm LEDs and cold LEDs are different, you can input different current value.
Ch1±connects to cold LEDs. Ch2±connect to warm LEDs.
For example:
Ch1: the Vf of warm LEDs is 35.7V, you can set current to be 700mA, the power is 25W.
Ch2: the Vf of cold LEDs is 25.4V, you can set current to be 1000mA, the power is 25W.
(2) Select dimming strategy to be DT8 CCT Driver.
(3) Choose dimming curve to be linear or logarithmic.
(4) Set the minimum dimming level, the minimum value is 0.1%.
If you set the value to be 10%, the minimum intensity percentage equals 10%.
(5) AUX Enable: enable or disable driver’s auxiliary output function.
If enable this function, the standby power dissipation>0.5W.
If disable this function, the standby power dissipation<0.5W.
(6) Physical CCT: input the value according to CCT lamp’s parameters.
(7) Logical CCT: the actual CCT range can be achieved by driver and CCT lamp.
For example: The physical CCT of LED is 2700K and 6500K according to CCT lamp’s parameters.
If you want the actual effect to be 3000~6000K, when driver works with CCT lamp, please set the logical CCT to be 3000K and 6000K.
2. Wiring Connection

(1) Ch1± connects to cold LEDs. Ch2± connect to warm LEDs.
(2) One driver owns 2 addresses. One address is responsible of controlling output of two channels to achieve color temperature. Another one address is responsible of controlling output of two channels to achieve intensity.
(3) When you connect drivers with the DALI Master. Each channel of the driver will be set an random address. Then DALI Master use binary search method to find the lowest random address X, once find it, and set X to be A0Y. And exclude it from the searching process. Then DALI Master to search address X+1, once find it, set X+1 to be A0Y+1.
(4) By implementing this internal algorithm together with the controller's binary search method, the address A0Y and A0Y+1 control one lamp’s intensity and color temperature. If you want to change address number, make sure that new address B0Y and B0Y+1 keep consecutive. Like the general DALI DT6 driver, each address can store 16 scenes. Address A0Y control the scene of intensity, while address A0Y+1 controls the scene of color temperature.
(5) Only address A0Y can response to broadcast command. The address (A0+1) won’t react broadcast command.
3.1 Configuration Video
3.2 Video Demonstration

DALI DT6 Solo Dimming

One dual channel DALI driver owns 1 DALI address. This address controls both two channels. The current value of Ch1 and Ch2 can be set to be different. 1. Parameters Settings

The configuration of S series can be set by Touch Setting software or Smartkey Network software.
Under the circumstance that no overpower situation exist, any current value can be set for channel1 and channel 2.
2. Wiring Connection

3.1 Configuration Video
3.2 Video Demonstration

DALI DT6 Dual Dimming

One dual channel DALI driver owns 1 DALI address. This address controls both two channels. The current value of Ch1 and Ch2 can be set to be different. 1. Parameters Settings

The configuration of S series can be set by Touch Setting software or Smartkey Network software.
Under the circumstance that no overpower situation exist, any current value can be set for channel1 and channel 2.
2. Wiring Connection

3.1 Configuration Video
3.2 Video Demonstration

Matching List of DALI Master

Although DALI is a standard interface protocol, tests have been conducted in detail targeted at the following DALI master to guarantee 100% matching without any error.

The Outline of LED Driver

To make it convenient for LED driver to be applicable to diverse installation environments, MOONS’ LED driver has 6 types of shells, among which, 4 are built-in and 2 are independent. dali-driver-outline