Ex-Or MLS2500D, MLS2500DF, MLS2500DWL, MLS2500DWLF, MLS2500DALI Installation Instructions

MLS2500D / MLS2500DF

MLS2500DWL* / MLS2500DWLF*

MLS2500DALI / ML2500DALIF

MLS2500DALIWL* /

MLS2500DALIWLF*

Digital Mid Range Series Detector

MLS2500D(WL)
MLS2500DALI(WL)

MLS2500D(WL)F
MLS2500DALI(WL)F

Installation and Commissioning

Instructions

Note: QuickSet Pro required for commissioning

Digital Mid Range Series Detector

Fixing

Only suitably qualified personnel should install this equipment.

1. This is an extremely sensitive movement detector; it is essential therefore that it be installed on a rigid
surface that will not itself be subject to any movement or vibration.

2. Before isolating the circuits to be switched, check that all lighting is fully operational and that there is no
moving equipment or machinery within the monitored area which may cause nuisance switching.

3. Position the detector where it has a good forward “view” of the area to be controlled. Ideal mounting
location is normally in a corner by the entrance or at one end of a corridor at a height of 2.5 to 4m. Do not
mount within 25cm of a fluorescent fitting.

Please note that this product uses microwave technology to detect occupancy and is not recommended

for applications where there are large areas of metal, e.g. metal ceiling or panelling, as unpredictable
sensitivity may result.

Also, microwave presence detection is not completely attenuated by materials such as plasterboard,

wood and glass, so the possibility of unwanted presence detection through office partitions should be
considered when determining detector positioning and sensitivity settings within the intended application.

4a. MLS2500D - Surface version
Separate the detector from its back-box by loosening the locking screw so that approximately 3mm of

thread is visible and then twisting the detector off the back-box. Note the arrow symbol moulded into the
bottom of the back-box. The fixing holes allow for mounting on a BESA box or direct to a rigid surface.
Secure the back-box firmly to a rigid surface so that the arrow points into the controlled area.

4b. MLS2500DF- Semi-flush version
Use a hole saw to drill a 76mm hole into the ceiling tile. The flush ring is designed to clamp the tile between

its two halves. Loosen the locking screw so that approximately 3mm of thread is visible and remove the
bottom half of the flush ring. With the detector in the ceiling, pointing towards the area to be controlled, fit
the bottom half of the flush ring to the assembly. Depending on the thickness of the ceiling tile, screws
longer than those supplied may be required to hold the two halves of the flush ring together.

It is recommended that Mid Range detectors be ceiling mounted. Where this is not possible, the wall-mounting
kit (WMK - see below) must be used.

Exploded view of detector
for fixing into ceiling tiles.

WMK Wall-mounting Kit

(Supplied assembled)

Vertical installation

Use this method of mounting for racking aisle
applications and where adjustment in the
vertical plane will give improved control over
the precise point of entry detection.

2

Horizontal installation

For general applications where
ceiling mounting is not
convenient and wide angle
coverage in the horizontal plane
is desirable. The WMK can be
screwed to a hard surface or the
lid of a conduit stop-end box.

Electrical Connections

Detectors should be connected in accordance with the diagram below.

Digital Mid Range Detectors are designed to control up to 25 DSI or DALI ballasts, a switched load of up to

10 Amps or a combination of the two. When controlling DSI or DALI ballasts the ballast types must not be
mixed. The DSI or DALI input terminals on the ballasts should be connected in parallel with each other and to
the Polarity-Free Digital Output terminals of the detector. Each DSI or DALI luminaire is controlled completely
by its digital input and therefore would normally have a permanent power supply. Turning the power off to
some lights within a control circuit will not affect the operation of those lights that remain powered and under
the control of the detector.

When switching via the relay output, multiple MLS2500Ds' relay outputs may be connected in parallel
provided the controlled load does not exceed 10 Amps. If digital ballasts are also being controlled, the digital
outputs from different detectors must never be connected one to another, even if they are of the same type.

Live Out

Live In

Neutral

Earth

D1

D2

MLS 1

MLS 2

8

SW

L

7

L

6

N

5

4

D

3

D

(Digital Out)

M

MLS 2-core Bus Cable Do NOT connect to Mains

1 2

M

(MLS Bus)

SWITCHED LOAD

10 Amps Maximum

Live

Neutral

Mains
Supply

Earth

Digital Dimming Signal Pair to Ballasts

Note: A means of disconnection must be incorporated into the fixed wiring in accordance with the current
wiring regulations.

Always check product label before wiring

3