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MS2421PF
Installation Instructions
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Ex-Or MS2421PF Installation Instructions

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Dimensions
MS2421PF MS2421PSM
62mm deep
behind ceiling
Flange:
15mm deep
62mm
deep
MS2421PF / MS2421PSM
Gold Series LightSpot with photocell
100mm
Technical Data
100mm
OPERATING VOLTAGE: 230V 50Hz (UK & Europe) PRODUCT RATING & RECOMMENDED CIRCUIT PROTECTION: 10 Amps MAXIMUM RECOMMENDED LOAD: 10 Amps per output (not exceeding 10A in total) TERMINAL CAPACITY: 2 x 2.5mm
2
Honeywell Ex-Or
St. Marks Court, North Street, Horsham, West Sussex, RH12 1BW, UK
Tel: +44 (0)1942 719229 Fax: +44 (0)1942 508753 Email: technicalsales.ex-or@.com 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.
W4308K
MS2421PF
MS2421PSM
Installation and Commissioning
Instructions
Note: QuickSet Pro required for commissioning
Gold Series LightSpot with photocell
The Gold Series LightSpot is a high performance presence detector with photocell. 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.
1. Location
These detectors are extremely sensitive to movement; they must be mounted on a solid surface which has no movement whatsoever.
Please note that the Gold Series LightSpot 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.
Take care when choosing a location for this equipment, since this type of device is capable of detecting large moving metal objects well beyond the normal range at which it is sensitive to human targets.
The units are colour coded according to four variations in operating frequency. Each type can be identified by different coloured stickers on the detector and carton. For reliable operation it is essential that units of the same colour code do not occupy adjacent positions in open-plan areas or in adjoining rooms (see example plan below).
Note: Do not mount within 25cm of a luminaire. Do not position this product on a pitch narrower than 5m.
Blue
Red
Yellow
Green
Blue
Red
Yellow
Green
YellowBlue
Red
Green
Blue
Red
Yellow
Green
Blue
Red
Yellow
Green
YellowBlue
Red
Green
2. Installation
MS2421PSM - The housing may be secured to a hard surface or a BESA box. The unit fits into the housing with a simple bayonet action.
MS2421PF - Depth required behind ceiling: 62mm from front flange plus an allowance for the minimum bend radius of the cable. Sinking box fits into a 89mm diameter hole in ceiling tile or plasterboard ceiling. To avoid damage to ceiling tile, do not overtighten. No access above the ceiling is necessary.
3. Connection
The sensor has two outputs, one influenced by the photocell, the other not.
LOAD 2
(Max 10 Amps)
NOT INFLUEN CED
BY PHOTOCELL
TOTAL LO AD N OT TO EX CEED 10A
L
N
E
Permanent or switched supply
VOLT­FREE OUTP UT
LIVE OUT
LIVE IN
NEUT RAL
EART H
MS2421PF /PSM
R2
R2
R1
LOAD 1
(Max 10 Amps) INFLUE NCED
BY PHOTOCELL
YellowBlue
Red
Green
YellowBlue
Red
Green
Blue
Red
Blue
Red
Yellow
Green
Yellow
Green
YellowBlue
Red
Green
YellowBlue
Red
Green
YellowBlue
Red
Green
YellowBlue
Red
Green
Blue
Red
Blue
Red
Yellow
Green
Yellow
Green
YellowBlue
Red
Green
YellowBlue
Red
Green
4. Commissioning
Sensors are supplied with factory default settings as shown in the table below. They can be programmed using the QuickSet Pro infrared programming tool.
Factory Default Settings
Parameter
POWER UP RESPO NSE R1 OFF DLY R2 OFF DLY 24 HOUR CYCLE ON RANGE OFF RANG E ENTRY SCE NE
PCELL MOD E SET-POIN T LO W SET-POIN T HI GH
Options
ON/OFF Auto/Semi-auto 1 min - 96 hours (5-35 mins with H P10) 1 min - 96 hours ON/OFF MAX, HIGH, ME D or LOW 100%, 75% or 50% off ON Range Scn 1 - R1 On & influenced by photocell, R2 On Scn 2 - R1 On & influenced by photocell, R2 Off Scn 3 - R1 Off, R2 Off Scn 4 - R1 On, R2 Off Scn 5 - R1 On, R2 On Scn 6 - R1 Off, R2 On PASSIVE, ACTIV E, D ISABLED 0 - 1023 0 - 1023
Default
ON AUTO 20 mins 20 mins OFF HIGH 75% Scn 1
DISAB LED 1000 1023
Programming Notes
Each of these settings can be re-programmed, if desired, by use of the infrared programming tool QuickSet Pro.
.
Parameter Options
OFF DELAY
The Off Delay may be set between 1 minute and 96 hours. Independent Off Delays may be set for each output. A 10-second Off Delay is available for walk-testing the product. In a typical office environment an Off Delay of 20 minutes is usually satisfactory.
RESPONSE
Where absence detection is required (i.e. the user manually turns lights ON if required but lights still turn off automatically once an area is vacated), semi­automatic operation can be set via the programmer. It should be noted that this mode of operation affects only the switched-live output, R1. Where semi-automatic operation is required on both outputs, please contact Ex-Or for assistance.
POWER UP
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 15 seconds and THEN look for movement. Only if the area is occupied will the outputs switch on at this time.
ON RANGE/OFF RANGE
Settings appropriate for the type of activity typical for the monitored area should be chosen. It is desirable to require a larger movement to switch lights on (i.e. when an area is entered) than to sustain the lights in an already occupied area. The On Range determines the sensitivity to movement when lights are on; Off Range is used to set a reduced sensitivity to movement when the lights have switched off.
PCELL MODE
The MS2421P has an in-built photocell. The photocell does not affect the volt-free output, i.e. the volt-free output will turn on regardless of natural light levels when occupancy is detected. 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 under Setting the Photocell).
Passive - The photocell will inhibit switch-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 PC T 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.
24 HOUR CYCLE
For use in ‘Washroom Mode’ only (see section 7). In this mode it is necessary to have a hygiene cycle (flush) if the area has been unoccupied for 24hrs. Select this feature and the output will switch on for the duration of the Off Delay once every 24hrs if the area remains unoccupied. Operates on R2 (if selected).
ENTRY SCENE
Sets which scene is recalled when an unoccupied area is entered.
SET-PO INT LOW
Aiming point as photocell adjusts ballast output.
SET-PO INT HIGH
Level above which photocell switches its output off.
5. Setting the Photocell
1. If the lights are not already on, switch them on manually by pressing ‘Utilities / LightSpot/MLS/LCM / IR Remote / Luminaire+ / OK’. 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 / LightSpot/MLS/LCM / Set Light Level / OK’. 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 QuickSet Pro. 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 is shown momentarily on the QuickSet Pro screen following the Download; this is a useful mechanism for troubleshooting.
Active Mode
Passive Mode
Upper Threshold
Lower Threshold
Occupancy
Natural Light Level
Duration of
Off Delay
Lights ON = Lights OFF =
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.
Area Occupied =
Area Unoccupied =
6. Walk-test Mode
Walk-test mode is used to check that the detector is operating as required. The short Off Delay enables the installer to check that lights are switching on when movements are made at the edge of the detection zone. It is easier to carry out a walk-test when the photocell is not holding the lights off.
1. C h ang e t h e Off De lay to 10 se cond s b y p res s ing ‘ U til i tie s /
LightSpot/MLS/LCM / Walk Test / OK’.
2. 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. The programmed Off Delay will be automatically restored after 5 minutes.
7. Washroom Mode (24-Hour Cycle)
The unit may be used in conjunction with a 230V solenoid valve and a trickle valve or ‘petcock’ to effect a urinal flush system. Set the water flow rate by adjusting the petcock so that the cistern just fills within the chosen Off Delay period of the detector. Note that the urinal control operates on R2.
Important Additional Notes
1. Only suitably qualified personnel should install this equipment.
2. A means for disconnection must be incorporated in the fixed wiring in accordance with
the current wiring regulations.
3. This equipment switches lights no more frequently than would a responsible human
occupant. However, m anufacturers of s ome pa rti cul ar lig hti ng types (e.g. ‘2 D’ 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.
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