LEGRAND Wattstopper FD-301 Installation Instructions

No: 24625 – 09/16 rev. 1
Catalog Number • Numéro de Catalogue • Número de Catálogo: FD-301
Country of Origin: Made in China • Pays d'origine: Fabriqué en Chine • País de origen: Hecho en China
The FD-301 is a fixture-integrated dimming photosensor. It provides a continuous dimming signal to a 0-10VDC dimming ballast, based
on daylight level. It is a low voltage device used in conjunction with a Wattstopper FS-PP power pack. The FD-301 is a "closed loop"
system; it considers both daylight and electric light when determining dimming levels. It uses a sliding setpoint control algorithm to
maintain the desired illuminance levels for separate night and day target setpoints. The FD-301 slowly raises or lowers the electric lights
to avoid sudden changes that can annoy occupants. After the photosensor-equipped fixture is installed, final setup adjustments are
made using the LSR-301-S remote control setup tool. After commissioning, the FD-301 automatically adjusts the electric lights to meet
target illuminance levels.
Additional Control Options
Manual or Automatic ON/OFF lighting control can be provided by a switch or fixture integrated
occupancy sensor connected to the FS-PP (see Figures 5 and 6 for wiring). Occupant
dimming control is provided by the optional LSR-301-P. This remote control allows the
occupant to temporarily adjust light levels.
Photosensor Placement
The FD-301 photosensor works with 0-10VDC dimming ballasts to control lights in areas that
receive enough daylight so that the electric lights can be dimmed.
• Avoid installing photosensor-equipped fixtures where the light from one controlled fixture
spills over into the view of the next photosensor.
• Avoid locating photosensor-equipped fixtures close to specular surfaces such as highly
polished floors or tables, or highly reflective surfaces such as tops of cabinets, and others.
Follow the lamp manufacturer's recommendation on lamp burn-in for new lamps prior dimming the lamps with the FD-301. If the lamp
manufacturer's guidelines are not followed, premature lamp failure may occur. After the fixture is installed and power is supplied to the
FD-301, it will drive the lamps at full output until the Night adjustment has been completed using the LSR-301-S remote control. See the
Photosensor Commissioning section for more information.
The FD-301 is commissioned under two conditions, Night and Day. Either adjustment may be completed first. The red LED under the
FD-301's lens flashes continuously until the Night and Day adjustments are both completed, then it can begin automatic dimming.
Conditions for Setup
Set up the FD-301 after all furnishings are installed. Placement of furnishings affects the way light reflects from various surfaces.
• Furniture, floor, and wall coverings must be installed and clean.
• All light fixtures must be installed and fully operational.
• Window coverings must be installed, clean, and operable.
• Remove unnecessary objects such as tools and installation materials from the view of the FD-301.
• Do not block primary sources of electric light or daylight from reaching the FD-301's view.
Wattstopper
Fixture Integrated Dimming Photosensor
Installation Instructions • Instructions d'Installation • Instrucciones de Instalación
DESCRIPTION AND OPERATION
LAMP BURN-IN
PHOTOSENSOR COMMISSIONING
®

SPECIFICATIONS

Power Supply ................... 24VDC from Wattstopper FS-PP
Current Consumption .................................. 30mA@24VDC
Ballasts .................................... 0-10VDC dimmable ballasts
Wire Length, photosensor to ballast and FS-PP ..... 6' (182cm)
Maximum Ballasts Controlled ...........................................50
Max Sink current .........................................................50mA
Min Signal to ballast ................................................ 0.2VDC
Max Signal to ballast .................................................. 0VDC
Window
Typical Daylit Zone, about 12' (3.6m)
Figure 1: Placement
Light Fixture
FD-301
70º
Field of view