Control Principle

Can be used with sensors for local energy saving control.

The IS45K can also be installed to allow for manual on/off control.

LT4544

Dimming Controller

LT4544
  1. Provides for four 0 to 10V signal output, which can be connected to four adjustable dimmer power supplies or adjustable electronic ballasts.
  2. For use with dimmable fluorescents or any dimming power supply that can accept a 0 to 10V signal input.
  3. Can connect to either four K15 sensors or four classic wall switches to save energy through dimming.

Daylit Areas

臨外走道

Effective energy saving can be achieved by exploiting natural light combined with dimming for daylit areas.

工作區域

Adjusting the dimming level appropriately according to the type of space and its layout.

Demo

Daylight Compensation

Central Scheduled Dimming

Daylit area dimming

Central host decides dimming level as per schedule.

Daylight Compensation

Daylit area dimming
  • Light dimming level is adjusted to compensate for the level of natural daylight.
  • A switch can also installed for manual control by the user as needed.

Scheduled Dimming

Schedule decides what dimming level to set in order to save energy.

Daylit Space Dimming

The room lighting level can be manually set depending on the natural lighting level.

Room Dimming

Energy saving dimming for public daylit rooms, such as offices and library rooms
  • When daylight is sufficient, then room lights need only to be half dimmed (adjustable), if the user feels it is enough, they would not need to do anything.
  • When daylight becomes dim, then the half dimmed lights are not enough, and the user may press the switch to turn the lights to full.
  • With a K15 installed, if the occupant leaves the room and forgets to press the switch, then the lights will go back to being half dimmed after a short delay.

Elevator Sensor Dimming

Typical Usage: At night, hallways or elevators make use of sensors.
Local sensor controlled dimming
Sensor based dimming
Function:
  1. Peak Period: Centralized control takes care turning the lights fully on, half dimmed or authorizing local control.
  2. Off-Peak Period: Local sensor control, people come, lights on; people leave, lights off.

Energy Savings

By making full use of sensors and integrated switches, one can expect to get the potential savings as shown below. Reference: US EPA Report

Small Offices

Small Offices(13~50%)

Classrooms

Classrooms(40~46%)

Meeting Rooms

Meeting Rooms(22~65%)

Restrooms

Restrooms(30~90%)

Hallways

Hallways(30~80%)

Warehouses

Warehouses(45~80%)