Thorn SensaLite SLOCS Installation and operation manual

Installation and Commissioning
Instructions
SensaLite PIR Detector for Batten-style Luminaires
SENSALITE SLOCS - Switching
SENSALITE SLOCSP - Switching with photocell
SENSALITE SLOCS (96239752)
SENSALITE SLOCSP (96239753)
Note: SENSALINK SENLP or SENSA SENP required for commissioning

If there is insufficient space
for the locknut, the adaptor
shown below (Fig. 3) can be
used.
Fig. 3
Fig. 1
Fig. 2
SENSALINK SLOCS - Switching
SENSALINK SLOCSP - Switching with photocell
Only suitably qualified personnel should install this equipment.
This passive infrared presence detector is designed to be fitted to a batten-style luminaire.
Installation
1. Remove the M20 knockout from the end cap of the luminaire.
2. Pass the sensor wires through from the outside and insert the threaded end of the sensor into the hole.
3. A polarising plate can be made in order to prevent rotation of the sensor - an example design is given
below (Fig. 4).
4. If a polarising plate is to be used, pass the wires through the slot and position the polarising plate against
the inside face of the end cap. Ensure that the tab is positioned correctly i.e. at the ceiling side, away from
the lamp.
5. Fit and tighten the locknut.
6. Connect the wires in accordance with the wiring instructions.
Polarising Plate (not supplied)
The purpose of the polarising plate is to ensure that the sensor does
not rotate from the correct position, i.e. pointing vertically
downwards, during transport or installation.
The two overall dimensions marked ‘SEE TEXT’ need to be made
such that when the plate is positioned against the inner face of the
luminaire end cap, it cannot rotate.
The 3.5mm ‘tab’ should be located closest to the ceiling (away from
the lamp). The 6.0mm slot is optional and is to allow the wires to
pass through for ease of assembly.
Material can be plastic sheet, minimum thicknesss 1.0mm,
recommended thickness 1.5-2.0mm, or mild/stainless steel sheet,
minimum thickness 0.6mm, recommended thickness 1.0-1.6mm.
SEE TEXT
SEE TEXT
7.3
6.0
20
3.5
Fig. 4
- 2 -
20mm Female Adaptor
MK part number EFA/2

Electrical Connections
LOAD
Blue
Brown
Black
Blue
Brown
Black
Multiple Detectors
may be connected
in parallel, as is
shown above, to
control the same
Maximum Load
L N E
SUPPLY
Maximum Total Load not to exceed
that specified for a Single Detector
LOAD LOAD
L N E
Fig. 6
W5023A
L N E L N E
Always check product label before connecting.
Black
Blue
Brown - Live
- Neutral
- Switched live
Fig. 5
- 3 -

Detection Profile
Plan View
o
Detection pattern is a 360 cone shape.
Diameter is 2.25 x the mounting height.
The squares show the arrangement
of the detection pattern.
Fig. 7
Direction of most
commonly used
entry into detection
zone, i.e. start of
corridor or doorway
Fig. 8
5m
5m
2.5m
o
97
2.5m
DETECTION ZONE
- 4 -
5.6m
BATTEN LUMINAIRE

Walk Testing
In order to verify the installation, there is an inbuilt facility (Walk Test Mode) to temporarily reduce the time delay
to 10 seconds. A SENSALINK SENLP or SENSA SENP Programmer is required to access this facility.
Using the SENSA SENP:
Use the DIL switches to enable walk test mode.
Move around the area that is being controlled, stopping for 10 seconds to allow the lights to switch off, before
moving and triggering the lights back on.
Re-programme the desired Off Delay once testing is complete (SENSALINK SLOCSP) only).
Using the SENSALINK SENLP:
Go to the Utilities menu, place the cursor over ‘Walk Test’, point the programmer at the detector and press OK.
Move around the area that is being controlled, stopping for 10 seconds to allow the lights to switch off, before
moving and triggering the lights back on.
After 5 minutes, the time-out will be restored to what it was before walk test was enabled.
Notes on Walk Testing:
lDuring walk test, after the lights have turned off, wait 5 seconds before moving again because the sensitivity
is deliberately reduced for a few seconds following switch off.
lSensitivity is greater when approaching the circular footprint at a tangent rather than heading towards the
centre (see Fig. 7).
lMost luminaires take approximately 1 second to strike after presence has been detected.
lThe detection pattern is cone-shaped which means that when standing at the very edge of the detection
footprint only a person’s feet will be visible (see Fig. 8).
- 5 -
DETECTION ZONE
59 MAX
If the distance between the bottom
of the sensor and the bottom of the
end cap exceeds 59mm, there may
be a blind spot in the detection
zone.
Fig. 9
W5023A

Photocell
The photocell (SENSALINK SLOCSP only) can be programmed to operate in one of two ways: Active or
Passive. (Factory default setting is ‘Passive’.)
In all operating modes, the photocell can hold lights off as a vacant area becomes occupied, and if the light
level falls too low during the period of occupancy, the lights switch on. In ‘Passive Mode’ the lights do not
switch off whilst the area is occupied no matter how much light is measured. In ‘Active Mode’ the photocell is
able to switch the lights off whilst the area is occupied.
Setting the Photocell
1. If the lights are not already on, switch them on manually by pressing ‘Utilities/User Remote/Luminaire+/OK’
[SENSALINK SENLP], or ‘Up’ [SENSA SENP]. 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’ [SENSALINK
SENLP], or ‘Store’ [SENSA SENP]. 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 SENSALINK SENLP. 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
[SENSALINK SENLP only] is shown momentarily on the SENSALINK SENLP screen following the Download;
this is a useful mechanism for troubleshooting.
Lights ON = Lights OFF =
Upper Threshold
Lower Threshold
Natural
Light
Level
Duration of
Off Delay
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.
Active Mode
Passive Mode
Occupancy Area Occupied = Area Unoccupied =
- 6 -
Fig. 10

SENSA SENP Parameter Options (SENSALINK SLOCSP only except Walk Test)
PHOTOCELL
ENABLED
MOVEMENT
DETECTOR
AUTOMATIC
OPERATION
MOVEMENT
DETECTOR
SEMI-AUTOMATIC
OPERATION
NOT
USED
POWER UP
ON
POWERUP
OFF
PHOTOCELL
DISABLED
5
min
ON
OFF
10
min
20
min
OFF DELAY
Add together to give required time.
All OFF = 10 secs (Walk Test)
PHOTOCELL
MODE
= ACTIVE
NOT USED
24 Hr Cycle
No 24 Hr Cycle PHOTOCELL
MODE
= PASSIVE
NOT
USED
Off Delay
The Off Delay may be set between 5 and 35 minutes (SLOCSP only). A 10-second Off Delay is available for
walk-testing the product. In a typical office environment a 20-minute Off Delay is usually satisfactory.
Movement Detector Operation (Automatic/Semi-Automatic)
Where absence detection is required (ie the user manually turns lights ON if required but lights still turn off
automatically once an area is vacated), semi-automatic operation can be set via the programmer.
Power Up Setting (On/Off)
Set to ON the detector will automatically switch its outputs on when Mains is applied. If set to OFF, the detector
will power up without turning its outputs on, wait for 30 seconds and THEN look for movement. Only if the area is
occupied will the output switch on at this time. The detector must be set to Power Up ON when used in
conjunction with semi-automatic operation.
Photocell Operation (Passive/Active/Disabled)
The SCLOCSP has an in-built photocell. The photocell has three modes of operation - Passive, Active and
Disabled. Its operational behaviour is governed by the setting chosen and by the values stored in the Upper and
Lower thresholds (see diagram overleaf).
Passive - The photocell will inhibit turn-on of the controlled load if sufficient natural light is available. It will not turn
the load off whilst an area is occupied
Active - The photocell will turn the controlled load on and off as required whilst natural light levels fluctuate during
a period of occupancy. This mode of operation operates in conjunction with a passing cloud timer (PCT). The
PCT is asymmetrical in operation - the load will be switched on immediately that the light level falls below the
lower set point, however, the load switches off only if the light level exceeds the upper threshold continuously for
a period equal to the Off Delay.
Disabled - The photocell has no effect.
24hr Cycle (Yes/No)
Not applicable.
Defaults (where applicable)
The units are supplied with factory default settings (Power-Up On, fully Automatic operation, a 20 minute Off
Delay, no 24hr Cycle, Passive Photocell). Programme using the SENSALINK SENLP Programmer with LCD
display, or the SENSASENP Programmer incorporating 12 dil switches.
Please note that additional
parameters are available
via the SENSALINK SENLP
Programmer
21 3 4 5 6 7 8 9 10 11 12
- 7 -
W5023A

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.
Important Additional Notes
1. Ameans for disconnection must be incorporated in the fixed wiring in accordance with the current wiring regulations.
2. Due to the fact that the photocell (SENSALINK SLOCSP) is on the ceiling looking down, it is not possible for measurements
made with a lux meter on the working plane to remain constant when daylight illuminates the ceiling and the working plane
to a differing extent. Therefore, products of this type should be regarded as capable of maintaining an APPROXIMATE
light level only.
3. This equipment switches lights no more frequently than would a responsible human occupant. However, manufacturers of
some particular lighting types (e.g. ‘2D’ luminaires) may specify a maximum number of switching cycles in order to achieve
a predicted lamp life. Please check with the manufacturer of the luminaires to ensure that they are compatible with
automatic controls in this respect.
Dimensions
107
600mm
40
Fig.11
Fig. 12
14
M20 x 1.5
14
29
Technical Data
OPERATING VOLTAGE: 230V~ 50Hz (UK & Europe)
POWER CONSUMPTION: <0.5W
CAPACITY: 2A Switching
MAXIMUM NUMBER OF BALLASTS: 4 (Electronic or HF Ballasts)
WEIGHT: 100g
COLOUR: White
MATERIAL: Flame retardant PC/ABS
IP RATING: 4X - estimated
W5023A
Thorn Lighting Limited
www.thornlighting.com