Ex-Or MLS2021DF, MLS2021DALIF, MLS2021DSM, MLS2021DALISM Installation Instructions

MLS2021DF & MLS2021DSM for DSI ballasts

MLS2021DALIF & MLS2021DALISM for DALI ballasts

Digital Gold PIR Detector
with regulating photocell

MLS2021DF

MLS2021DALIF

MLS2021DSM

MLS2021DALISM

Installation and Commissioning

Instructions

Note: QuickSet Pro required for commissioning

1

Digital Gold PIR Detector with Regulating Photocell

Please note that UltraLite versions of these detectors (suffix CWL7) do not offer
MLS functionality and cannot be connected using MLS cable.

Only suitably qualified personnel should install this equipment.

This is a high-performance, communicating presence detector which can be used as
part of a full Ex-Or MLS Digital Managed Lighting System or as a stand-alone unit. It is
equipped with a regulating photocell to control digital DSI or DALI ballasts (when using
the detector’s Digital Output) and a volt-free output for control of non-dimmable lighting
loads. The product incorporates Ex-Or’s OneSwitch Dimming, local manual operation of
any controlled lighting load.

Fixing

MLS2021DSM/DALISM - The housing may be secured to a hard surface or to a BESA

box. The unit fits into the housing with a simple bayonet action.

MLS2021DF/DALIF - Supplied with a sinking (dry-lining) box for flush fitting. The
sinking box fits into an 89mm diameter hole in a ceiling tile or plasterboard ceiling. To
avoid damage to ceiling tile do not overtighten. Depth required behind ceiling 62mm from
front flange plus an allowance for the minimum bend radius of the cable. No access
above the ceiling is necessary.

Electrical Connections

This detector should be connected in accordance with the diagrams overleaf. Both the
Digital Output and MLS connections are polarity-free however other MLS products
require that polarity be maintained. The MLS cable should be mains-rated, unscreened,
twisted pair of at least 1.5mm CSA. For further information please refer to Wiring
Application Guide AN4001. Please note that UltraLite versions of these detectors

(suffix CWL7) do not offer MLS functionality and cannot be connected using MLS
cable.

The detector is designed to control up to 25 DSI or DALI luminaires, a switched load of
up to 6 Amps or a combination of the two. When controlling DSI or DALI ballasts the
ballast type 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
on the rear 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 up and under the control of the detector.

When switching via the volt-free output, multiple MLS2021D detectors may be
connected in parallel provided the controlled load does not exceed 6 Amps.

Note: The digital dimming signals of two detectors should NEVER be connected

together. Their only connections should be to the digital inputs of high frequency
ballasts of the correct type.

2

Using OneSwitch, MLS*, Switched and

VOLT­FREE
OUTPU T

LIVE

NEUTR AL

EARTH

ONESW ITCH
DIMMI NG

MLS2021D

Digital Outputs

(MAX 6 AMP S)

LOAD

Momentary
push-to-make
switch

These Connections are

Polarity-Free

Digital

MLS

Output

BUS

1 2 1 2

L

Permanent
or switched

N

supply

E

Please note that the Earth terminal has no internal
connection and is used for termination only.

* UltraLite-version detectors (suffix CWL7)
do not offer MLS functionality and cannot
be connected using MLS cable.

MLS Bus Connection
(Some MLS devices require
that polarity be maintained)

Digital output

Using Switched Output and MLS*

VOLT­FREE
OUTPU T

LIVE

NEUTR AL

EARTH

ONESW ITCH
DIMMI NG

In Parallel, using Switched Output only

MLS2021D

(MAX 6 AMP S)

NC

2 x MLS2021D

LOAD

These Connections are

Polarity-Free

Digital

MLS

Output

BUS

1 2 1 2

* UltraLite-version detectors (suffix CWL7)
do not offer MLS functionality and cannot
be connected using MLS cable.

NC

Optional MLS Bus Connection
(Some MLS devices require

L

Permanent
or switched

N

supply

E

Please note that the Earth terminal has no internal
connection and is used for termination only.

that polarity be maintained)

Any connection not shown is NO C ONNE CTI ON

LOAD

(Max 6 Amps)

VOLT­FREE
OUTPUT

LIVE IN LIVE IN

NEUTRA L NEUTRA L

EARTH EART H

ONE

SWITCH

Relay outputs may be connected together in parallel to cover larger areas, however the
total load on all combined relay outputs must not exceed 6 Amps.

VOLT­FREE
OUTPUT

NC NC

ONE

SWITCH

L

N
E

Permanent
or switched
supply

3

Commissioning

The units are supplied with the factory default settings shown below which make further
commissioning unnecessary in many applications. To make use of the programmable
settings, an infrared commissioning tool is required (QuickSet Pro). A ten-second time
delay is selectable from programmer to aid commissioning.

Sensitivity to Movement

While the factory settings will be correct for many applications, the sensitivity can be
adjusted if required. The ON RANGE setting controls the sensitivity, with higher
numbers giving greater sensitivity. Like all programmable parameters, the sensitivity
setting will be retained in the event of a power failure and can be re-programmed any
number of times.

Factory Default Settings

These are the settings to which the units have been programmed before they leave
the factory.

Parameter

Power up
Response
Off delay
On Sensitivity
Bus Connect
1st Zone
2nd Zone
3rd Zone
4th Zone
Corridor 1
Corridor 2
Global 1 Rx
Global 2 Rx
Manual I/P
Start Lamps
Entry Scene
Lamp Max
Dimming
Fade to Off
Vacant
Bright-Out
Photocell
Set Point Low
Set Point High

Options

ON/OFF
Auto, Manual/Bus, Manual Only
1min - 96hrs, Disabled
0-100
YES/NO
1-100 addresses
1-100 addresses
1-100 addresses
1-100 addresses
1-100, Building Zone Span
1-100, Building Zone Span
YES/NO
YES/NO
LOCAL/SHARE
MAX/MIN
Scene 1-6
10% - 100%
Regulate 100% to 50%
YES/NO
(10 Alternative Exit Scenes)
YES/NO
Active, Passive, Disabled
1-1023
1-1023

Default
Setting

ON
AUTO
20 min
100
YES

-

-

-

-

-

­NO
NO
LOCAL
MAX
Scene 1
100%
100%
NO
OFF
NO
Disabled
1023
1023

Notes

Each of these settings
can be re-programmed,
if desired, by use of the
infrared programming
tool QuickSet Pro.
All settings are retained
in the event of a power
failure.

4

Photocell Control

i) Regulating Photocell

Regulating photocell control tries to maintain a constant level of total illumination in the
space controlled by dimming and brightening the controlled luminaires to compensate
for changes in illumination from other sources.

With the photocell configured as DISABLED the Regulating Control module is
influenced only by the BRIGHT-OUT setting. BRIGHT-OUT = YES allows it to hold-off
the lights at the start of occupancy if natural light already exceeds SET-POINT LOW
and to extinguish the lights during occupancy if total light, after the controlled luminaires
have been dimmed to minimum, exceeds SET-POINT HIGH continuously for a period
equal to the OFF DELAY . The lighting is restored immediately if the illumination level
subsequently drops below SET-POINT LOW.

If the photocell is configured for ACTIVE or PASSIVE control of the relay switched load
then the Regulating Control module adopts the decision made by the Switching Control
module in the case of turn-on inhibit on entry, but still obeys the BRIGHT-OUT YES/NO
setting with regard to turn-off during occupancy.

ii) Switching Photocell (PHOTOCELL: ACTIVE or PASSIVE)

Both ACTIVE or PASSIVE modes hold off the controlled lighting on entry when natural
light is sufficient, i.e. SET-POINT LOW is exceeded, but only ACTIVE mode will
extinguish the lighting if natural light increases sufficiently during occupancy, i.e. SET­POINT HIGH is exceeded continuously for a period equal to OFF DELAY. The lighting
is restored immediately if the illumination level subsequently drops below SET-POINT
LOW.

iii) Photocell DISABLED

If the photocell is configured as DISABLED for relay Switching Control it will have no
effect on the control of that load, which will be ON continuously during periods of
occupancy unless commanded OFF via manual switch or infrared control. The photocell
readings are still available for use by the Regulating Control module while in this mode.

Programming the Photocell Set-points.

The parameters SET-POINT LOW and SET-POINT HIGH programme the detector’s
photocell response The SET-POINTS can be manually programmed as numbers
between 1 (darkest) and 1023 (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 detector. To assist with finding the appropriate SET­POINT settings, the light level currently perceived by the photocell can be viewed on the
QuickSet Pro screen briefly, following a download operation. The number represents the
light level read immediately before the download took place.

5

Programming the Photocell Set-points (Continued)

Tip: Turn the lights off with the QuickSet Pro (UTILITIES / LIGHTSPOT/MLS/LCM /
IR REMOTE / HC5) to measure the perceived light level with no contribution from the
controlled lighting.

Alternatively the SET-POINTS can be configured semi-automatically;

i) The Primary Interest is the Regulating Control Output.

With the photocell configured as DISABLED:-

Using the QuickSet Pro (UTILITIES / LIGHTSPOT/MLS/LCM / SET LIGHT LEVEL)
or HC5A (+,- Scene 1) set the required light output from the controlled luminaires and
then press and hold OK (QuickSet Pro) or Scene 1 (HC5A) until the controlled lights
"blink" to indicate that a new SET-POINT LOW has been stored and a calculated SET­POINT HIGH has also been inserted. Using the QuickSet Pro the photocell can now be
re-configured as ACTIVE or PASSIVE if required.

With the photocell configured as ACTIVE or PASSIVE:-

1) If the lights are not already on, switch them on manually by pressing ‘UTILITIES /
LIGHTSPOT/MLS/LCM / IR REMOTE / Luminaire+ / OK’ (QuickSet Pro) or "+"
(HC5A). 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.

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 /
LIGHTSPOT/MLS/LCM / SET LIGHT LEVEL / OK’ (QuickSet Pro) or Scene 1 (HC5A).
The detector takes a photocell reading, adds a small amount and stores the value in
SET-POINT HIGH. Then it turns the lights off, makes another measurement and stores
the value in SET-POINT LOW. 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 slightly more than the contribution made by the electric lighting. This is the
perfect amount of hysteresis to ensure that the lights will not oscillate.

6

OneSwitch

OneSwitch Dimming affords local control to the end-user whereby a simple,
momentary, push-to-make wall switch can be used to raise or lower the lighting level or
toggle the output of the unit ON or OFF. A short press (less than 1 second) toggles all
outputs from both OFF to both ON or from either ON to both OFF. A long press will ramp
the digital output either up or down with no effect on the volt-free output. If the output
prior to pressing the switch is above 90% the output will ramp down; if below 90% it will
ramp up. If the latest press and the current press are within 5 seconds of each other it will
ramp in the opposite direction. A latching switch can be used to override the outputs
OFF or ON at maximum output.

User Overrides

The end-user can configure a number of lighting scenes that can be recalled using a
hand-held override. With an HC5A hand-held controller lighting can be overridden OFF
or ON, or a set level can be chosen, affecting either the controlled group or, with an MLS
system, the whole zone. Regulating and switched loads can be adjusted independently
through a combination of OneSwitch Dimming and the HC5A.

Important Additional Notes

1. All terminals on this product are provided for final connections. It is not intended that the
product be used as a junction box for looping cables.

2. A means for disconnection must be incorporated in the fixed wiring in accordance with the
current wiring regulations.

3. Although nominally 12V, the dimming output is not SELV and therefore should be treated
with the same respect as mains with regard to wiring practice.

4. The dimming control output should be connected only to the control input of the ballasts ­never to other detectors.

5. 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.

6. This equipment switches lights no more frequently than would a responsible human
occupant. However, manufacturers of some 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.

7

Dimensions

Outer Enclosure

62mm deep

(behind ceiling for
MLS2021DF and
MLS2021DALIF)

100mm

Fascia

10mm

deep

Technical Data

MLS CABLE : 1.5mm unscreened twisted-pair (applicable when

2

detector is used as part of a full MLS Digital Managed Lighting
System): see Application Note AN4001
MAXIMUM RECOMMENDED MOUNTING HEIGHT: 3.0m
RANGE: Cone-shaped detection
pattern, diameter (at floor level)
= 2.4 x mounting height

6.0m

OFF DELAY: 1 minute - 96 hours (adjustable)
PHOTOCELL: Adjustable 50-5000 lux via HP2000
OPERATING VOLTAGE: 230V ~ 50Hz (UK & Europe)
PRODUCT RATING AND RECOMMENDED CIRCUIT
PROTECTION: 10 Amps
MAXIMUM RECOMMENDED LOAD (VOLT-FREE): 6 Amps
MAXIMUM RECOMMENDED LOAD (DSI/DALI): 25 Ballasts
COLOUR: White (RAL9010)
MATERIAL: Flame retardant PC/ABS
WEIGHT: 210g (flush version), 187g (surface version)
IP RATING: 3X
OPERATING TEMPERATURE: 0 C to 40 C

o o

2.5m

Honeywell Ex-Or

St. Marks Court, North Street,
Horsham, West Sussex, RH12 1BW, UK
Tel:[phone]

Fax: [phone]
Email: [e-mail]
www.ex-or.com

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.

8

W4426G