Questions tagged [dali]

DALI (Digital Addressable Lighting Interface) is a lighting industry specific protocol between control devices (controllers) and control gear (ballasts) formally specified by IEC62386.

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DALI interface to 3.3v

I'm trying to make a circuit to interface a DALI driver (Digitally Addressable Lighting Interface) to a SAML21 microcontroller. Voltages on the DALI side goes from 0 to 22.5V, a digital 0 goes from 0-...
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66 views

Dali commissioning Luminaires

I have more than one lamp and i need to make a program to commissioning. I've already did it whit a single lamp but now I don't know : How to make addresses for multiple lamps (in my case A3 is ...
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82 views

Dali Light Addressing: How to?

As I am trying to create a program that addresses the various luminaires, I wanted to know better theoretically not the commands to give, but why I am giving that specific command. I've searched for a ...
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55 views

Is additional isolation needed for inverter control circuitry?

I'm currently setting up a PV island system. Electricity is stored in two parallel 12V batteries which is then fed into a 300W 230V inverter. The load connected to the inverter consists out of several ...
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73 views

Series and parallel LED using

I am planning to build 4 LED-strips using two different 'white' settings (1+1 strip x 4). The LEDs will be driven by a 24V constant voltage dimmable RGB-DALI driver (up to 5A per channel). My idea is ...
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28 views

How to calculate Energy Readings in DALI-2?

I'm reading the memory bank202 from a DALI-2 supported led luminary for energy consumption. When the lamp is on, I see that memory bank location 9 and 10 is increasing. But I couldn't understand how ...
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33 views

DALI Lighting (IEC62386-209) and Command-In-Between

Good Afternoon, I'm having some trouble understanding IEC62386-209 section 12.7.3, which involves sending an "ENABLE DEVICE TYPE 8" command to DALI Control Gear prior to sending an extended (DT8) ...
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45 views

Dali - Handling multiple responses

I have found a similar answer related to taking care of multiple responses in a Dali bus system: DALI: Handling multiple responses from DALI system I'm designing the dali control device(master). I ...
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42 views

Can I have multiple KNX/DALI gateways on a single DALI line?

In our KNX test lab we have several KNX/DALI gateways from different vendors (ABB, Ipas, Siemens, etc.). We have 1 DALI line with a few testing devices. Whenever we do tests we need to physically ...
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97 views

Dali Commissioning Without Randomise

I have 2 slave devices connected to my dali bus. I can set their short address using the below steps: ...
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90 views

DALI - Read Energy Consumption of a Luminaire

I have been trying to find a command to read information about the energy consumption of a luminaire using Dali, yet couldn't find anything on the documents. Is this possible to read information ...
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47 views

Minimum Signal Current for DALI Driver

I was looking at the specifications for DALI drivers and apparently the nominal current usage is 2mA/driver for the dimming signal. Does anyone know what the minimum current is? I have a 12V/1mA ...
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58 views

DALI: Resetted short addresses but now ballasts not responding to COMPARE?

I currently have a DALI set-up with three LEDs. All LEDs turn off when sent a broadcast command to turn off, so the set-up is wired correctly. I have removed all of their short addresses according ...
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120 views

DALI: How do I delete the short address from a device?

I have a device that already has a short address. I need to delete this short address so that I can do the initialisation process again (from random address to short address). Can this be done? What ...
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2answers
198 views

What is this diode bridge used for in this circuit?

I'm currently trying to figure out how this circuit work : I found this in a microchip documentation dealing with DALI (Digital Addressable Lighting Interface) protocol. The DALI protocol is mostly ...
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176 views

DALI deterministic commissioning

I am currently looking into setting up a DALI system with my own programmable DALI master and (over time) a multitude of DALI (LED) lights. The general idea is to use an already existing DALI python ...
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223 views

I need help to understand a sniffer circuit schematic

I'm an electrical engineering students and for a school project I need to understand a circuit schematic. First, I will provide some context. The school project I'm working on is the modification of a ...
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351 views

Trouble understanding overvoltage protection circuit

I am working on a DALI circuit and came across this app note. App note gives a schematic which is supposed to protect the circuit in case someone connects 220 VAC wires to the DALI lines. Schematic ...
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3answers
136 views

DALI Commissioning reduction

Is there any way I can reduce the DALI commissioning? I have an Occupancy sensor, photo sensor and a switch which are DALI devices. So every time when I turn on the device it goes for commissioning ...
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2answers
414 views

Need help understanding DALI circuit and 220 VAC protection

I am making a circuit to interface my MCU with a DALI bus. My basic circuit works and I am able to communicate on DALI bus. It looks like this: I fully understand the above circuit. After my base ...
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877 views

Understanding DALI power supply

I am working on a DALI system and I came across this schematic for the DALI power supply in a Microchip app note AN1465: It says the power line can be 12-20 Volts but the current has to be limited to ...
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70 views

Do I have to initialize Dali lamp somehow if I use broadcast commands?

I have few Dali lamps. Some of them are new, some of them are used. It is hard to tell which was initialized (addressed?) and which was not. I have simple DALI circuit with microcontroller and simple ...
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2answers
537 views

Understanding STEVAL-ILM001V1 DALI transceiver schematic + adding protections

I'm working on implementing a DALI bus interface circuit. DALI has a few specifics that make this tricky: The device should draw at most 2mA when receiving, it transmits by shorting the bus (250mA is ...
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469 views

DALI bus power supply requirements

As per standard DALI power supply should be 15 V at 250 mA. In the same time standard says that there can be up to 64 devices on the bus. So I can suppose that each DALI slave SHOULD cunsume 4 mA from ...
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170 views

DALI optical isolation of signal, but no power isolation?

The DALI standard suggests a separated power supply, because the DALI control lines are not galvanically isolated, so mains voltage may appear on the lines (and the standard suggests that DALI devices ...
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68 views

How to calculate the Short Circuit current of a small DC circuit?

I need to do a short circuit test for my DALI slave device. I have observed a maximum load of 140W at 210V-rms (Load current = 650 mA , PF = 0.975). I have to do a short circuit at the load side and I ...
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171 views

How to Update firmware of microcontroller using DALI lines of a DALI slave module?

I have developed a DALI slave module with PIC 16F18326 microcontroller. Now, I want to make a Bootloader for this PIC. But the problem is, I don't have a serial communication or USB connection with ...
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416 views

DALI Slave not responding to short address

I'm creating customized DALI Master from scratch. The problem is, that no matter what I do, none of the devices responds to short addressing. Let's start from the beginning. After connecting single ...
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2answers
545 views

Strange behavior of the DALI controlled luminaires

I faced a strange behavior of a DALI controlled LED luminaires circuit. I have 48 LED luimianires with a MeanWell ELG150-C700-DA drivers connaected according to the scheme below: I commissioned the ...
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1answer
197 views

LED driver type detection- 0-10V or DALI

I am looking for the solution which can automatically detect the driver type installed in street light luminary. There are control mechanism which controls and provides the 0-10V and DALI dimming to ...
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1answer
347 views

DALI Signal Voltage Range and Power Supply connection confusion with WAGO

In an attempt to solve this problem, I was cross-checking my connections several times. During this, I thought it will be interesting to see the DALI signal coming out of WAGO DALI Module as opposed ...
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178 views

Is the isolation necessary in this circuit?

I am designing a circuit to control LED drivers. The main characteristics are the following: The circuit is powered through the electrical network (230 VAC) It has three types of dimming outputs: 0-...
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860 views

DALI Click Board: Not clear about the board operation, usage and circuit design

I am developing a DALI Control Device using STM32 board. I have already programmed the board to send DALI Slave commands according to DALI Protocol. But I am facing problem interfacing my board with ...
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405 views

Adaptability of DALI Click Board for DALI Power Supply 18V DC, 250mA

I am developing a DALI Control Device using STM32 board. I have already programmed the board and got some basic results, now I want to test my device with industry standard DALI Control Gear. For that,...
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2answers
256 views

DALI Command's reply to the meaning of representatives

I have some control gears which already have short addresses, are connected on DALI lines. I tried to send Query Short Address (command 269)& verification Short Address (command 268), but I didn't ...
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167 views

Clarification required on DALI Standard 101,103

I want to develop a complete DALI Control Device with two important features, one being "3 DALI buses on the device" and other being the "RGB colour control feature"! Already, I have successfully ...
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178 views

How to set the group in DALI system on the bus? [closed]

When I have 6 gears on the DALI bus, how to set up a pair of two to the group by command?or another way to set? thanks!
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537 views

DALI : How commissioning process takes place in DALI system -2?

Broadcast control commands are working properly. But, I am not able to get the response from Dali Driver, for broadcast query or special commands. And also I am not able to set short address for the ...
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775 views

DALI schematic: help to analize reception circuit and limited current supply

I am trying to understand how this schematic works. It is a physical layer implementation of the DALI specification. The schematic is in this document (page 11). I have mainly two questions: In ...
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779 views

DALI specification: help to understand the physical layer schematic

I am trying to understand an NXP circuit that has implemented the physical layer of the DALI specification. In particular, it is DALI master hardware. For the transmission (page 4), it says exactly: ...
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1answer
1k views

DALI Multi-Master: How to design a multi-master system? Is it part of DALI standard?

This question is haunting me for a long time. This could be something very basic and I do not know how it works or could be some misunderstanding! I am now using STM32E407 as DALI master and am ...
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1answer
786 views

DALI Protocol: Is it valid to include this for manchester decoding convenience?

Understanding: DALI uses Async data decoding using 1 start bit and 2 stop bits. The 1 start bit is logical one (1), also encoded during Manchester encoding and the 2 stop bits(Signal is HIGH for long ...
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3answers
1k views

DALI Communication: Is DALI protocol a byte transfer mechanism or packet layer mechanism?

As per the DALI light-control standard protocol, DALI bus communication uses Asynchronous half-duplex(two-wire) serial communication. It uses Manchester coding at 1200 bits per second(baud). A DALI ...
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929 views

Issue with DALI interface circuit

I have a DALI interface board the circuit of which is shown below. This board was working so far but now the optocoupler in the circuit is not switching on DALI signals. Dali interface circuit: ...
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109 views

LED flickers below 3%

We are working on an LED dimmer circuit which supports DALI2.0 Interface. We already received the hardware and working on software only. LED driver circuit is based TPS92515HV and below is the ...
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1answer
146 views

Led dimming circuit is not able to switch off the led

We are working on an LED dimmer circuit which supports DALI2.0 Interface. We already received the hardware and working on software only. LED driver circuit is based TPS92515HV and below is the ...
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1answer
401 views

DALI DAPC OFF command

We are working on DALI LED control gear type product. We are using TPS92515 as LED driver and its controlled through Iadj pin (analog dimming). Our issue is even if we give input zero (GND) to control ...
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64 views

Light fixture dimming, LED turn of

I'm trying to dim a light fixture with the DALI protocol. It functions quite fine but when the dimming gets low two thirds of the LED:s turn of. Why is this? Is it because the voltage forward gets ...
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308 views

Do the existing/defined DALI protocol commands include color temp adjustment?

I want to know if the officially defined DALI commands entail anything related to adjusting color temperature. I understand that it specified quite a few commands in adjusting brightness, but I ...
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1k views

DALI - ARC Power Control Commands - What about them is 'ARC' related

Commands used in DALI are described as ARC Power Control. If I am Directing an LED fitting to a particular dimming level, what about the command has any relevance to an 'ARC' description. Where does ...