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4. Commissioning
Detectors are supplied with factory default settings (Power-up On / Fully Automatic
Operation / 20-minute Off Delay / No 24hr Cycle / Photocell Disabled) as shown
below. They can be programmed using the MLS Digital Programmer with LCD
display (HP2000) or the LightSpot Programmer (HP10) incorporating 12 dil
switches.
Factory Default Settings
Parameter
Options
POWER UP*
ON/OFF
RESPONSE*
Auto/Semi-auto
R1 OFF DLY*
1 min - 96 hours (5-35 mins with HP10)
R2 OFF DLY
1 min - 96 hours
24 HOUR CYCLE*
ON/OFF
ON RANGE*
MAX, HIGH, MED or LOW
OFF RANGE*
100%, 75% or 50% off ON Range
ENTRY SCENE
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
PCELL MODE*
PASSIVE, ACTIVE, DISABLED
SET-POINT LOW
0 - 1023
SET-POINT HIGH
0 - 1023
HP10 Parameter Options for MS2421P
5
SET RANGE
SET RANGE
WHEN LIGHTS
WHEN LIGHTS
min
OFF
ON
1
2
3
4
5
100%
OFF
OFF
ON
ON
Max
ON
OFF
High
75%
OFF
ON
50%
ON
OFF
OFF
ON
Medium
OFF
OFF
Low
50%
ON
ON
% of
Switch
Switch
ON
Position
Position
Range
Range
HP10 Parameter Options
(Parameter designation for HP2000 shown in capitals)
Off Delay - OFF DELAY
The Off Delay may be set between 5 and 35 minutes. (Independent Off Delays of
between 1 minute and 96 hours may be set for each output using the HP2000.)
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
Movement Detector Operation (Automatic / Semi-Automatic) - 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), semi-
automatic 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 (On/Off) - 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.
(Sensitivity) Range When Lights On / Lights Off - 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.
Photocell Mode (Passive/Active/Disabled) - 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 PCT 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 (Yes/No) - 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).
Default
Programming Notes
ON
Each of these settings
AUTO
can be re-programmed,
20 mins
if desired, by use of the
20 mins
infrared programming
OFF
tool HP2000.
HIGH
75%
Scn 1
* Selected parameters
shown with an asterisk
are re-programmable
with the HP10.
DISABLED
1000
1023
PHOTOCELL
MOVEMENT
MODE =
DETECTOR
ACTIVE
AUTOMATIC
OPERATION
10
20
PHOTOCELL
POWER UP
ENABLED
ON
min
min
9 10 11 12
6
7
8
OFF DELAY
PHOTOCELL
POWER UP
R1 & R2
DISABLED
OFF
Add together to
give required time
(All OFF = 10 sec
Walk Test)
PHOTOCELL
MOVEMENT
MODE =
DETECTOR
PASSIVE
SEMI-AUTO
OPERATION
5. Setting the Photocell
1.
If the lights are not already on, switch them on manually by pressing
'Utilities/User Remote/Luminaire+/OK' [HP2000], or 'Up' [HP10].
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/Set
Light Level/OK' [HP2000], or 'Store' [HP10].
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 HP2000. Please note
that the values are non-specific units i.e. not lux.
24-HOUR
Note: The light level perceived by the detector at the moment immediately prior
CYCLE
to a Download operation [HP2000 only] is shown momentarily on the HP2000
ON
screen following the Download; this is a useful mechanism for troubleshooting.
Active Mode
Passive Mode
ON
Upper Threshold
OFF
Lower Threshold
24-HOUR
Occupancy
CYCLE
OFF
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. Change the Off Delay to 10 seconds using the HP10 or press 'Utilities/Walk
Test/OK' (HP2000 only).
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. Note: If the
HP2000 was used to engage 'soft' walk test mode as described above, 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.
8. Hand-held Controllers
HP2000
MLS Digital
Programmer
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, manufacturers of some particular 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.
The detector takes a
Natural
Light
Duration of
Level
Off Delay
HP10
HC6
LightSpot
Two-button Hand-held Controller
Programmer
(Note: HC5 Universal Hand-held
REMOTE
PROGRAMMER
HP10
Controller is also suitable
for use with this detector.)
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 =
W4308G
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