The KNX DALI L4 bc 16 A actuator is an interface between the KNX bus system and the DALI lighting system (Digital Addressable Lighting Interface). The interface has four channels for DALI lighting control, each of which can control up to 64 DALI participants (electronic ballasts/EVGs). Control is via broadcast telegram, which means that all participants on a channel are switched/dimmed at the same time. Each channel can be set separately. Each channel has a switched relay contact through which the DALI participants can be completely de-energized (no standby). The KNX DALI L4 bc 16 A supplies the DALI bus voltage; no external DALI bus voltage supply is required. The KNX DALI L4 bc 16 A can be used to set the color and color temperature (tunable white) for DALI ECGs with device type 8. Both color settings can be controlled by scenes using relative or absolute dimming. In addition to normal operation, the KNX DALI L4 bc 16 A has a night mode and a staircase light function with advance warning function (and both in combination). Buttons on the device allow direct manual switching and dimming of the connected DALI electronic ballasts even without bus voltage. The LEDs show whether the relay is open or closed (upper LEDs) and whether the lamp is on or off according to a DALI command (lower LEDs). The DALI electronic ballasts can be controlled with the buttons for commissioning in construction site operation without KNX power supply and without prior configuration using the ETS.
