When specifying intelligent lighting, the focus should be on practical features that make installation easier and maintenance less frequent. At Fern Howard, we build highly configurable DALI-2 bulkheads to order in the UK, ensuring dependable lead times and supply stability.
To make standardising your intelligent lighting specification across a whole site effortless, both the DALI-2 driver and the emergency module detailed below can be integrated into most of Fern Howard’s bulkheads. Here is a look at the exact hardware features powering our luminaires.
The DALI-2 Driver - To order add DA to most of our part numbers
At the core of our dimming functionality is a 42W constant current LED driver built for versatility and stability.
Configurable to the Load: The driver’s output current can be adjusted directly via a DIP switch, ranging from 150mA to 1050mA.
High-Performance Dimming: It supports both DALI-2 (including maintenance parts 251, 252, 253) and Push Dimming. The dimming depth drops all the way to 1%, providing a flicker-free experience.
Energy Efficiency: The driver operates at 87% efficiency with a power factor of 0.95 , keeping standby and no-load power strictly below 0.5W.
Built-in Protections: It features integrated safeguards against Short Circuit (SCP), Over Load (OLP), Over Voltage (OVP), and Over Temperature (OTP).
Warranty: Supported by a 5-year warranty.
Corridor Mode Application: Using the Push Dimming feature, the driver supports an automated Corridor Mode. Lighting rests at a 10% absence value; upon detecting presence, it fades to 100% in just 0.5 seconds. After a 120-second run-on time with no movement, it takes 32 seconds to smoothly fade back down to 10%
The DALI-2 Addressable Emergency Module - To order add DAEM to most of our part numbers
Emergency lighting must be dependable. Our DALI-2 Emergency module operates alongside LED drivers up to a 200W maximum load and comes with an upgraded 8-year warranty.
3W Emergency Operation: The module provides a nominal 3W emergency output. It utilises a 3.6V 5.0Ah Li-ion battery , which can complete a full recharge in less than 20 hours.
Automated Testing: To eliminate manual maintenance scheduling, the self-test function is enabled by default. It conducts functional tests every 7 days and full duration tests every 52 weeks.
Extended Duration: Following a mains supply failure, the module is guaranteed to operate a luminaire for more than 3 hours.
Maintenance Quick-Reference: Module Diagnostics
To make on-site maintenance straightforward, the Dali Addressable Emergency features a bi-colour LED indicator to provide immediate status updates. Note that a “Slow Flash” equals 1 flash every 2 seconds, and a “Fast Flash” equals 2 flashes per second.
Standby: System is healthy and monitoring.
Duration test in progress: Slow Flash.
Function test in progress: Fast Flash.
Fault with connected load / out of temperature range: Solid On.
Battery disconnected / test failure: Slow Flash.
Battery low voltage: Fast Flash.
Emergency function in operation: LED Off.
DALI-2 identifying code: Alternating Green > Red > Green > Red….
Designed for intelligent buildings. Delivered for real-world installation.