Advanced Features
Photocell
The MLSM2000A incorporates a photocell which can be configured to operate in three different modes, selectable from within
the product’s menus on the QuickSet Pro Programmer. These modes are ‘regulating’, passive’ and ‘none’. Note that in
any
mode of operation, the photocell affects the light output only when the Entry Scene is set to Scene 1.
Setting the regulating photocell
The MLSM2000A is set by default to operate in ‘regulating’ mode. Using the QuickSet Pro, 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.
Setting the passive photocell
Use Passive mode in applications where light level regulation is not required (eg, when controlling non-dimmable ballasts) but
it is desirable to hold off the controlled lighting when natural light is sufficient.
The parameter
‘Threshold’
on the QuickSet Pro menu is used to program the MLSM2000A’s passive photocell set point,
which determines whether the lights will be allowed to turn on as an unoccupied area is entered. The threshold is programmed
as a number between 1 (darkest) and 254 (brightest). This number is not scaled to correlate with ‘lux’ measurements made
using a light meter, but nevertheless is a true representation of the light level perceived by the MLSM2000A.
In order to assist with selection of the appropriate threshold setting, the light level currently perceived by the detector (in terms
of a number between 1 and 254) can be viewed on the QuickSet screen briefly following a download operation. The number
represents the light level immediately before the download operation took place.
Tip: turn the lights off first using the
IR
Remote
menu found in
Utilities
if you want to measure the perceived ambient light level with no contribution from the
controlled lighting.
Note: When setting the regulating light level as described in the previous section, the Threshold is also set to the current
measured level.
Commissioning
Detectors are supplied factory pre-set which ensures the lighting will switch on automatically as soon as power is
applied. Final commissioning of the detectors requires the use of the QuickSet Pro Programmer.
Commissioning Detectors using the QuickSet Pro Programmer
It is important that the Programmer be held perpendicular between 0.5m and 2m from the sensor.
1. Switch on by pressing any button (and unlock with top left rectangular button).
2. Point the programmer at detector and press the DOWNLOAD button. The programmer will confirm the
product’s identity and call up the correct menu of parameters and their current settings.
3. Use a combination of UP, DOWN, FORWARD and BACK buttons to navigate the parameter menu, selecting
options for each shown.
4. When options for all parameters have been selected, point the programmer at the detector and press the
UPLOAD button. The luminaire(s) will switch off briefly during the programming process.
5. After a short period of inactivity (default 5 minutes), the programmer hibernates retaining the most recent
settings.
OneSwitch Dimming
OneSwitch dimming affords local control to the end-user whereby a simple, momentary, push-to-make wallswitch
can be used to raise or lower the lighting level or to toggle the output ON/OFF. A press of less than 1 second will
toggle the output status while a longer press will raise or lower the output. Each time the switch is pressed, the
direction of dimming reverses. If the switch has not been pressed for 5 seconds, the direction will be up (brighter) -
unless the output is already above 90% in which case the direction is down. A wiring diagram is shown left.
To Test with HC5A Hand-held Controller
Once the MLS Luminaire Controllers have been installed within the luminaires, the HC5A may be used to dim and
brighten luminaires and to switch them ON and OFF. One of 6 different lighting scenes can also be recalled.
