IEC 62386-303:2017

Overview

IEC 62386-303:2017 (consolidated with AMD1:2024) defines particular requirements for input devices - occupancy sensors within the Digital Addressable Lighting Interface (DALI) family. It specifies how occupancy and presence information is delivered over the DALI bus to lighting control systems, complements the general control-device rules in IEC 62386‑103, and aligns with lamp-control requirements in IEC 61347. The consolidated edition (Edition 1.1, 2024) updates the 2017 publication and clarifies behavior for movement and presence sensing devices, including support for DC supplies on the interface.

Key Topics

• Scope and applicability: Applies to input devices that provide occupancy information by movement or presence sensing and is used in conjunction with IEC 62386‑103 (2014) and its amendment.
• Bus system and power: Defines the DALI bus transmission structure, timing, electrical specification and interface power-supply considerations (including DC).
• Input signal mapping: Specifies mapping for movement sensors and presence sensors, including state diagrams and the meaning of inputValue for events.
• Event handling and encoding: Rules for event generation (occupancy/vacancy), priority usage, bus usage, encoding and event filtering.
• Timers and configuration: Standardized timers and configuration mechanisms such as hold timer, report timer, deadtime timer, and settings for sensitivity and detection range.
• Commands and queries: Declares device and instance commands (e.g., INPUT NOTIFICATION, POWER NOTIFICATION), configuration instructions (SET EVENT FILTER, SET HOLD TIMER, SET SENSITIVITY), and queries for instance capabilities and error reporting.
• Error and exception handling: Defines behavior for sensor failure modes, manufacturer-specific errors and how error values are reported.

Applications

IEC 62386‑303 is intended for:

• Sensor and lighting device manufacturers designing DALI-compliant occupancy/presence sensors.
• Lighting control system integrators and specifiers implementing occupancy-based control strategies.
• Facility managers and architects specifying energy-efficient and automated lighting for offices, retail, schools and industrial spaces.
• Test labs and certification bodies verifying compliance with DALI input-device behavior and interoperability.

Practical uses include occupancy-based lighting control for energy savings, automated vacancy detection, daylight-linked control integrations, and retrofits to DALI networks where presence/movement data must be standardized.

Related Standards

• IEC 62386 series - Digital Addressable Lighting Interface (general framework)
• IEC 62386‑101 - General requirements for system components
• IEC 62386‑103 - General requirements for control devices (applicability reference)
• IEC 61347 - Requirements for lamp control gear

Keywords: IEC 62386-303:2017, DALI, occupancy sensor, digital addressable lighting interface, input devices, presence sensing, movement sensor, lighting control.