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Where it is a requirement that the patch leads are protected by conduit it may prove more convenient to run the
cables unterminated and attach the RJ45 connectors afterwards. In this case the cable used should be 4-
twisted pair, 24awg multistranded, unscreened data cable to Category 5E standard, (e.g. Belden Datatwist
350). No strain-relief hoods should be fitted to the insulation displacement RJ45 connectors, due to the limited
space available above the emplaced detector. Note that the maximum allowable cable length between the
MLS2401CDR and the LCM is 100m.
The wiring scheme used should follow either the T-568A or the T-568B Ethernet standards, and must give "1-1",
"straight-through" connectivity between the two RJ45 connectors for all eight cores. Note that this detector is
not an Ethernet device and cannot be used with network Hubs and Switches.
Plug the RJ45 connector at the detector station into the modular socket labelled "To CD Box" on the top of the
detector module. and offer the detector to the backbox. When the bayonet fitting is engaged, twist the detector
clockwise to retain it.
View on back of
MLS2401CDR
Detector
Socket for
Patch Lead to
LCM
Commissioning
In the CDW12U5 and CDH4U5/CDH8U5 systems, all configuration information is held within the Lighting
Control Modules themselves, not in individual detectors. Most of the configuration items are set up with the aid of
a dedicated programme running on a portable PC which communicates with the LCM either by an infrared link,
via one of the attached detectors, or by a specialised serial link into the LCM itself. However, when setting the
actual light levels around which dimming or switching decisions are to be made, the system allows the
commissioning engineer the same convenience as if he were dealing with traditional stand-alone detectors. An
infrared programming tool, the Quickset Pro or HC5A, is used to set the controlling or switching set-point for the
photocell. In all cases the setting is then transmitted from the detector to the LCM, where it is uniquely associated
with the detector number being dealt with and will be preserved in the event of power failure. All settings can be
re-programmed any number of times.
Setting the Regulating Photocell
Using the QuickSet Pro Programmer, enter the Utilities menu and select 'LightSpot/MLS/LCM' then 'Set Light
Level'. Use the 'up' and 'down' buttons to manually adjust the light output from the luminaire(s) and when at the
required level press and hold 'OK' to store. The luminaire(s) will blink to acknowledge a successful store
operation
Due to the fact that the photocell 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.
To CD
Do Not
Box
Connect
MLS2401CDR
Ex-Or
Haydock Lane
Haydock
Merseyside
Tel: 01942 719229
I I I
WA11 9UJ
Fax: 01942 272767
Bayonet Fixing
Do Not
Lugs
Connect
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