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Setting the Photocell
1.
If the lights are not already on, switch them on manually by pressing 'Utilities/User Remote/Luminaire+/OK'on the
HP2000. Fluorescent lights do not reach full output until up to 15 minutes after being switched on, so ensure that
the lights are fully warmed up before continuing. This stage may be omitted if the intention is to operate the
detector's photocell in Passive Mode only [the detector must have already been programmed to Passive Mode].
2.
Wait until the time of day when the natural light level is at the point below which you would want the lights to be on,
and above which you would not want the lights to be on.
3.
Start the internal self-programming mechanism by pressing 'Utilities/Set Light Level/OK' on the HP2000. The
detector takes a measurement, adds a small amount and stores the value in the Upper Threshold. Then it turns
the lights off, makes another measurement and stores the value in the Lower Threshold. The lights now switch on
again to acknowledge a successful programming operation.
The two switching thresholds have now been set, and the difference between them is equal to the contribution made
by the electric lighting; this is the perfect amount of hysteresis to ensure that the lights will not oscillate. The
thresholds may be read back and fine-tuned if necessary using the HP2000. Please note that the values are non-
specific units i.e. not lux.
Note: The light level perceived by the detector at the moment immediately prior to a Download operation is shown
momentarily on the HP2000 screen following the Download; this is a useful mechanism for troubleshooting.
Active Mode
Passive Mode
Upper Threshold
Lower Threshold
Occupancy
Technical Data
OPERATING VOLTAGE: 230V ~ 50Hz (UK & Europe)
RECOMMENDED CIRCUIT PROTECTION: 10 Amps
TERMINAL CAPACITY: 2 x 2.5mm
MAXIMUM LOAD: 6 Amps per output [not exceeding 10A in total]
MAXIMUM RECOMMENDED MOUNTING HEIGHT: 16 metres
RANGE: Cone-shaped detection pattern,
diameter (at floor level)
= 1 x mounting height
PHOTOCELL: Adjustable 50-5000 lux via HP2000
OFF DELAY 1 & 2: 1 minute - 96 hours adjustable
and 10 second Walk Test Mode.
[Each output independently adjustable]
MINIMUM MOUNTING PITCH (SPACING):
0.5 x mounting height (when utilising the photocell
- see note under 'Fixing')
COLOUR: White (RAL9010)
MATERIAL: Flame retardant PC/ABS
WEIGHT: 200g approx
IP RATING: 3X
OPERATING TEMPERATURE: 0 C to 40 C
Ex-Or
Novar ED&S Limited
Haydock Lane, Haydock, Merseyside WA11 9UJ
Tel: +44 (0)1942 719229
Fax: +44 (0)1942 508753
Email: technicalsales.ex-or@honeywell.com
www.ex-or.com
Natural
Light
Level
2
RANGE
o
o
Lights ON =
Duration of
Off Delay
Area Occupied =
Dimensions
62mm deep
(behind ceiling)
Lights OFF =
Note that when the natural light
level exceeds the 'upper threshold'
value, the lights do not immediately
turn off. They will turn off only when
the upper threshold has been
exceeded for the duration of the
programmed Off Delay.
Area Unoccupied =
100mm
At the end of their useful life
the packaging and product
should be disposed of via a
suitable recycling centre.
Do not dispose of with normal
household waste.
Do not burn.
10mm
deep
(Facia)
W4425E
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