IEC 62386-333:2018

Overview

IEC 62386-333:2018 is Part 333 of the IEC 62386 series (Digital Addressable Lighting Interface - DALI) and defines the particular requirements for control devices implementing manual configuration (feature type 33). The standard specifies how a DALI-compatible bus system carries digital control signals to electronic lighting equipment in accordance with general device requirements and the safety/operational requirements of IEC 61347. It is intended to be used together with IEC 62386-101 (system components) and IEC 62386-103 (general control device requirements).

Key topics and technical requirements

• Scope and general rules: Defines how manual configuration fits within the DALI bus architecture and the relationship to Parts 101/103.
• Electrical and timing requirements: Covers interface power supply, insulation and timing constraints required for reliable bus operation.
• Transmission protocol and frame format: Describes the 24-bit event message frame encoding for manual configuration events and priority/bus usage rules.
• Method of operation: Specifies event generation, encoding, behavior during power interruption and interactions when manual configuration affects multiple variables.
• Manual configuration feature: Details the manualCapability and manualConfig encodings at device and instance levels, enable/disable mechanisms, and expected manual configuration behavior.
• Commands and queries: Adds feature-specific commands and queries such as SET MANUAL CONFIGURATION (examples: 103 and 3xx variants), QUERY MANUAL CONFIGURATION CAPABILITY, QUERY ANY MANUAL CONFIGURATION ENABLED, and common device control instructions like RESET.
• Variables and declarations: Declares additions and restrictions to existing device/instance variables relevant to feature type 33.
• Conformance and test references: Provides normative references and structured test ordering consistent with the IEC 62386 family.

Applications and who uses it

• Lighting control manufacturers: Designers of DALI control devices (switches, push-button interfaces, manual configuration panels) use the standard to implement compatible manual configuration features.
• Luminaire and control gear vendors: Ensure products respond correctly to manual configuration events on the DALI bus.
• System integrators and building automation: Apply the manual configuration feature to set or lock local behaviors (scenes, overrides) while maintaining DALI interoperability.
• Test labs and certification bodies: Verify conformance with encoding, timing, electrical and command/response behavior.
• Specifiers and consultants: Reference Part 333 when requiring manual configuration capabilities in lighting projects.

Related standards

• IEC 62386-101 - General requirements for system components
• IEC 62386-103 - General requirements for control devices
• IEC 61347 - Requirements for lamp control gear (safety and performance)

Keywords: IEC 62386-333:2018, Digital Addressable Lighting Interface, DALI, manual configuration, feature type 33, control devices, lighting control, bus system, IEC 61347.