DALI â Technical guide - Osram

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2.8 Features of the digital interface • IEC 62386 – This allows the combination of units from different manufacturers. A special feature to be noted is that the DALI manufacturers represented in the AG DALI. 6 test their units together in order to guarantee high functional security. • Physical usable data rate of 1200 bit/s enables fault-free operation 7 • Safe interference voltage gap – the generously dimensioned interference voltage gap of the high and low level guarantee safe operation • Data coding – the Manchester code is used; its structure allows detection of transmission errors • Maximum system current – the maximum current that a central interface 8 supply must deliver is 250 mA. Each control unit may take max. 2 mA. This must be taken into consideration when selecting the interface supply. • Limited system size – a maximum of 64 control units with an individual address can be operated differently in a single system • Feedback of information – ON/OFF, current brightness value of the connected lamps, lamp status etc. are possible • Two-wire control line – there should be two basic insulations between two conductors. Hence, single-layer insulation of a conductor is adequate. Control and supply lines can be laid together; a minimum cross section of the line must be maintained here. The maximum line length between two connected system subscribers must not exceed 300 meters • Potential-free control input – the control input is electrically separated from the mains supply. The ECGs can thus be operated on different outer conductors (phases) • No terminating resistors required – the interface lines do not need to be connected to resistors 6 Every ECG manufacturer that has the DALI logo on its ECG is a member of the AG DALI 7 40 commands/s and 16 bits ! 640 bit/s 8 DALI interface on the control unit: The DALI interface of the control unit also supplies the DALI interface of the connected DALI components. To ensure that the total current of max. 250 mA permitted for DALI is not exceeded, no other DALI supplies or DALI controllers can be connected to this system. In order not to exceed the max. permissible voltage drop of 2 V on the interface lines, the line cross section must be chosen according to the table in the technical details (2.5.4). 25
• Dimming range 1 %…100 % (the lower limit depends on the lamp and manufacturer). The progression of the characteristic is standardized and adapted to the sensitivity of the eye (logarithmic characteristic). Because of the standardization, a similar sense of brightness is achieved when using control units from different manufacturers • Programmable dimming times – special settings such as light change speeds (e.g. from 1 % to 100 % dimmer setting) are possible • Disconnection of the data line – the specified light values are adopted automatically • Storage of light scenes (different group-dependent dimming states) – up to 16 scenes can be stored • Connection via converter to building management systems – the interface is primarily conceived for room applications; it can be integrated into building management systems via gateways • Simple system reconfiguration – once the system is set up and configured, changes of the system function, the light scene and light functions are only a matter of configuration and do not require any changes to the hardware. Example: Regrouping of luminaires in a large office building • Simple integration of new components – if an existing illumination system is to be extended, new components can be added anywhere within the system. Attention must be paid here to adequate dimensioning of the system supply • Polarity freedom of the interface 2.9 Characteristics of the 1…10 V interface Note: This chapter is based on OSRAM ECGs types QTi DIM and HF DIM, abbreviated to OSRAM DIM ECGs in the following • Control is carried out via a fail-safe DC signal of 10 V (maximum brightness; control line open) to 1 V (minimum brightness; control line shorted) • The control power is generated by the ECG (max. current: 0.6 mA per ECG) • The voltage on the control line is voltage-insulated from the mains line (basic insulation), but there is no safety extra-low voltage (SELV) • ECGs in different phases can be dimmed by the same controller 26
Page 1 and 2: www.osram.de www.osram.com June 200
Page 3 and 4: 3.2.5 Operating modes with TouchDIM
Page 5 and 6: 1 Introduction 1.1 Dimmable lightin
Page 7 and 8: 1.1.3 Reliability/Safety Reliabilit
Page 9 and 10: 2.2 DALI in comparison to 1…10 V
Page 11 and 12: 2.3 DALI installation & features 2.
Page 13 and 14: Note (acc. to DIN VDE 0100/11.85, T
Page 15 and 16: 2.4.3 Radio interference suppressio
Page 17 and 18: 2.4.4 Operation of multiple ECGs in
Page 19 and 20: Figure 7: Three 2-lamp ECGs Correct
Page 21 and 22: 2.5.4 Requirements to be met by the
Page 23 and 24: 2.6 DALI data transfer With DALI, d
Page 25: The dependency of the relative lumi
Page 29 and 30: 2.9.1 The 1…10 V dimming curve Th
Page 31 and 32: • EoL shutdown after Test 2 Asymm
Page 33 and 34: Note: • Only use switches without
Page 35 and 36: Mode 2: The electronic control gear
Page 37 and 38: 3.2.6 Asynchronism/Automation of th
Page 39 and 40: For emergency lighting/voltage loss
Page 41 and 42: 3.3.2 Mains failure at the main dis
Page 43 and 44: Figure 23: DALI parameters that can
Page 45 and 46: Figure 25: Stairwell lighting timer
Page 47 and 48: 3.5.1.4 Control via instabus EIB Di
Page 49 and 50: ) Lower limit An effective lower li
Page 51 and 52: 3.7.1 Inserting and releasing the c
Page 53 and 54: 3.8 Temperature response of dimmabl
Page 55 and 56: 120 110 100 Ta [°C] Tc [°C] Telko
Page 57 and 58: 3.8.2 Color temperature Between the
Page 59 and 60: ECG Lamp T5 T5 T5 T5 CFL CFL CFL CF
Page 61 and 62: (T) curves of T5 lamps 100 90 Relat
Page 63 and 64: Note: • Amalgam and mercury lamps
Page 65 and 66: 5 Dimming of compact fluorescent la
Page 67 and 68: Numerous applications in the downli
Page 69 and 70: 7 Tender documents QUICKTRONIC ® I
Page 71 and 72: QUICKTRONIC ® INTELLIGENT DIM (1
Page 73 and 74: 8 Frequently asked questions (FAQ)
Page 75 and 76: • Can a DALI ECG belong to more t
Page 77 and 78:
8.1.3 DALI to 1…10 V converter
Page 79 and 80:
• Can control and supply lines be
Page 81 and 82:
9 Appendix 9.1 Starting currents an
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Figure 53: QTi DALI/DIM 2x: lines 2
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9.4 Operating parameters of the ECG
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9.6 The DALI standard (IEC 62386) a
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F Fade time and fade rate .........
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S Safe interference voltage gap ...
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