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DALI vs. 1-10V – Lighting Control Compared

DALI or 1-10V – Which lighting control is right?

The choice of dimming protocol significantly affects cost, flexibility and future-proofing of a lighting installation. 1-10V is the simplest analogue dimming technology: one control signal regulates all connected luminaires together. DALI (Digital Addressable Lighting Interface, IEC 62386) is a digital protocol where each luminaire has its own address and can be controlled individually. For electricians, the decision is often a trade-off between simplicity and investment cost (1-10V) versus flexibility and individual control (DALI).

Direct Comparison: DALI vs. 1-10V

Signal type: DALI = digital bidirectional, 1-10V = analogue unidirectional. Addressing: DALI = each luminaire individually addressable (up to 64 per line), 1-10V = all together. Grouping: DALI = flexible via software (16 groups), 1-10V = only by wiring. Feedback: DALI = lamp status, errors, operating hours, 1-10V = none. Control wiring: DALI = 2-wire, polarity-free, up to 300m, 1-10V = 2-wire, polarity-dependent, short cable lengths. Minimum dim level: DALI = typically 1% (logarithmic), 1-10V = typically 10% (linear). Scene control: DALI = 16 scenes per luminaire, 1-10V = not possible. Driver cost: DALI = approx. 3-8€ premium per luminaire, 1-10V = standard. Commissioning: DALI = software addressing required, 1-10V = immediately operational.

When 1-10V, When DALI?

1-10V recommended for: Small projects (<20 luminaires). Simple dimming without group control. Budget projects where individual control is not needed. Retrofitting existing installations (existing 1-10V infrastructure). Residential and simple commercial spaces. DALI recommended for: Office buildings with flexible room use (open-plan, cellular offices). Projects with daylight control and presence detectors. Buildings with central building management (BMS). Energy monitoring requirements (operating hours tracking). Rooms with multiple light scenes (conference rooms, showrooms). Large projects from 50+ luminaires (cost advantage through flexible grouping). DALI-2 recommended for: Sensor integration on the DALI bus (presence, light). Colour temperature control (Tunable White, DT8). Highest interoperability between manufacturers.

Practical Tip: DALI Wiring

The DALI control wire can be routed in the same cable as the mains supply (e.g. 5x1.5mm² NYM-J: 3 cores mains + 2 cores DALI). This saves a separate control cable. Maximum cable length: 300m at 1.5mm² (voltage drop max. 2V). DALI is polarity-free – reverse polarity is not a problem. Bus topology is freely selectable: line, star, tree or mixed. Maximum 64 participants per DALI line (DALI router for multiple lines if needed). Important: DALI bus voltage is 16V DC – no mains voltage on the control wire!

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FAQ

How much more does DALI cost than 1-10V?+

Per luminaire, expect 3-8€ premium for DALI drivers. Add DALI controllers (100-500€) and possibly commissioning software. For large projects, DALI often becomes cheaper than 1-10V because flexible software grouping saves wiring effort. For an office with 100 luminaires, the DALI premium is approx. 500-1000€ – quickly recovered through energy savings via daylight control.

Can I mix DALI and 1-10V luminaires?+

Not on the same control line. DALI and 1-10V are different protocols. However, DALI-to-1-10V converters exist to integrate 1-10V luminaires into a DALI system. In practice, it is better to use uniform DALI or 1-10V per zone.

What is DALI-2 and do I need it?+

DALI-2 (IEC 62386 Ed. 2) is the evolution with improved interoperability, standardised sensors (presence detectors, light sensors as "Input Devices") and stricter conformity tests. For new installations, we generally recommend DALI-2. The premium over DALI-1 is minimal, but future-proofing is significantly better.

How do I dim LED luminaires without DALI or 1-10V?+

Alternatives: Phase-cut/leading edge (Triac) – simplest solution for single luminaires, requires dimmable LED driver. Bluetooth Mesh – wireless group control via app, e.g. Casambi. Zigbee/Thread – smart home integration. Push-Dim – dimming via mains switch (short press = on/off, long press = dim). For professional installations, we recommend DALI or 1-10V for reliability and standard compliance.

Why does my 1-10V luminaire not dim below 10%?+

1-10V is an analogue signal. At 1V the minimum is reached (typically 10% brightness, sometimes 1-3%). The luminaire does not switch off completely – you need a separate switch in the mains line for that. With DALI, the luminaire can be dimmed to 0.1% and switched off by command. If 1-10V does not dim low enough, check whether your dimmer actually outputs 1V and does not stop at 2-3V.

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DALI vs. 1-10V Control: Comparison for Electricians | VYSN Lighting