fns3400D(X, A)/U Dimming Sensor Kit
3400/U
The fns3400D(X, A)/U sensor kit plugs directly
into any of the eZeBox range of connection units or
eZeBox connection unit
(not included)
a 7-pole single socket outlet to provide control of the
connected mains rated luminaires. Control is
ON/OFF/DIM, dependent on occupancy and or light
level detection.
The kit comprises a controller, sensor head, and
sensor lead.
Three products are available:
fns3400D/U for DSI digital dimmable ballasts.
fns3400X/U for DALI digital dimmable ballasts.
fns3400A/U for Analogue ballasts 0-10V.
Please ensure the correct product is selected for the type of ballast
being used as incorrect connection may damage the controller.
Sensor
lead
Sensor
head
Controller
Switch drop
lead
This product should only be
installed by a qualified electrician.
Switch
(not included)
Light level detection performance
The fnh400 sensor head detects both occupancy and light level. However, conditions for optimum light
sensing should always have priority over those for occupancy coverage. To achieve effective daylight
linking control, select only an area where the daylight contribution, though changeable, is significant and
remains consistent across the area.
As lamp output across the
circuit must be common, it is
not possible to provide the
'optimal' luminosity for all
areas when some receive
more daylight than others.
Flex Connectors Limited, Unit 8, The Gate Centre, Syon Gate Way, Brentford, Middlesex TW8 9DD, UK
Telephone: +44 (0) 20 8580 1066 Fax: +44 (0) 20 8580 1062
Website: www.flexconnectors.co.uk Email: info@flexconnectors.co.uk
Leaflet reference number: 22/035 issue 2 07/08/2012
Try to split into zones where
the changes in daylight are
reasonably consistent. Darker
areas may then be controlled
via alternative means such as
on/off without consideration to
light level. You may even
consider sufficient natural light reaches these areas to justify a second
light level sensing circuit.
Note: Always fit the sensor head as close as possible to the centre of the group of lights under its
control. Do not site where the sensor head could receive direct sunlight.
Configuring the controller and wiring the connection unit
Setting up your sensor
Link in position 1
Prise open lid 'C'
using a screw driver.
Position link as
C
1 2
Lights can remain ON
during an emergency test.
Wire connection unit as
shown on page 6.
required.
Link in position 2
1 2
Lights will switch OFF
during an emergency test.
Wire connection unit as
shown on page 6.
Rating
Supply Voltage : 230V~ 50Hz
Load
Fluorescent & Incandescent Lighting : 6A
Compact Fluorescent Lighting : 3A
Maximum number of Ballast
fnc3000D/U (DSI Digital control) : 25
fnc3000D/U (DALI Digital control) : 25
fnc3000D/U (Analogue 0-10V control) : 25
Sensor head and occupancy detection performance
Fnh400 sensor head
LED
I.R.
receiver
Light cell
The sensor head has a rectangular occupancy detection range broadly 7.4m x 5.6m at a ceiling height of
Occupancy sensor
2.5m (Longest length of detection aligning with the spring clips). As the ceiling height increases so will the
overall detection area but sensitivity to small movements will decrease.
Note: Make sure that the sensor is not adjacent to circulating air, heaters or lamps.
31.3 mm
40.0 mm
The sensor head fits
19.5 mm
hole, with clips which
into a 32mm diameter
can grip ceiling panels
down to 1.5mm thick
12.3 mm
.
Detection Zone
Max. 7.42m
3m
2
1
X X
1
2
3m
3 3
Y
Y
112 2
The X-Y cross-sectional diagram shows the detection area. The differences in the detection zone patterns
indicate the projections of the 16 lenses with a single focal point. Movement of an object with higher than
background temperature, between the detection zones, will be detected.
Detection Zone
Max. 5.66m
4m4m
5.0m
View X-X
2.5m
O
50
2.5m
0
5.0m 2.5m 2.5m
5.0m
XX
Y
O
50
O
41
0
View Y-Y
5.0m
O
41
Y
frc/set
frc/user
fnh/Slave
Fsl--
Fsw--
Fsy/a
Fsy/2e/2/0
Setup Remote Control - frc/set
Your sensor comes factory set with a 20 minute occupancy time out, however you will
require an frc/set remote control (ordered separately) to set up daylight linking. You may
also require one if another time out period is required (2,5,10,20 and 40 minutes) or
other operational options are desired. Full instruction for setting up the sensor are
supplied with the frc/set remote control.
Optional Extras/Spares
User Remote Control - frc/user
The frc/user remote control is a convenient method for the user to control the lighting
remotely. Lights can be temporarily overridden ON or OFF dimmed UP or DOWN. In
addition, up to six preset light levels can be stored and recalled.
Note: Unlike the frc/set remote control the frc/user remote control can not be used to
setup or change occupancy time-out settings.
Increasing Occupancy Coverage -
Occupancy coverage can be increased by adding up to a maximum of five slave sensor
fnh/slave The fnh/slave comes complete with a
heads ( ) to your existing sensor head.
'Y' adaptor to facilitate connection.
A connecting lead may also be required, part number fslXX (XX = length /5m).
Increasing Occupancy Coverage -
Occupancy coverage can be increased by adding up to a maximum of five slave sensor
heads ( ) to your existing sensor head.
fnh/slave The fnh/slave comes complete with a
'Y' adaptor to facilitate connection.
A connecting lead may also be required, part number fslXX (XX = length /5m).
PELV - Switch Drop
To add additional switches a PELV switch drop lead and a fsy/a will be
required to connect the additional switch to the control unit.
Fsy/a
If your room requires additional sensor heads (fnh/slave) or additional switch drops you
will require an fsy/a to link your additional cables into.
Fsy/2e/2/o
If your room requires 2-way switching you will require in addition:
1 x fsy/2e/2/0 - ‘Y’ adaptor for 2 x 2-way.
1 x fswXX - Switch drop lead.
(XX = length in metres in multiples of 5m).
fnh/slave
fnh/slave
2 7
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