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SENSA MRE SEND DSI (96211279) &
SENSA MRE SEND DALI (96238877)
Only suitably qualified personnel should install this equipment.
Fixing
These detectors are suitable for flush fitting to a suspended ceiling of thickness up to 54mm. A minimum
clearance of 125mm is required between the front surface of the ceiling tile and the hard ceiling.
Choose a suitable mounting location; ideally this would be in the centre of the controlled lighting and as close
as possible to where occupants normally sit.
Cut a 50mm diameter circular hole in the tile. Feed the flying lead and detector through the hole and secure in
position with the locking ring. Twisting the locking ring will release the detector should this be necessary.
Note: Do not position within 25cm of a luminaire.
Connection
The detector is supplied with a flying lead which should be taken to the nearest 230V power supply. This lead
also contains connections for the polarity-free digital output (for connections to the control input on the ballast)
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and
dimming input. The
dimming input is sheathed for applications which do not require this
connection. This wire should be terminated safely if not being used - do not connect to Neutral or Earth.
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Please see below for
details.
Control of a group of luminaires is achieved via the detector's two-wire digital control circuit. Each luminaire to
be controlled must contain a digital regulating type ballast with the appropriate DSI input (for use with
96211279) or DALI input (for use with 96238877). Ballast types must not be mixed. Connect all ballasts in the
control group (max 8) in parallel and also to the polarity-free digital output of the detector.
Each luminaire is controlled completely by its digital input and therefore would normally have a permanent
power supply. If, however, it is desired to have manual wall switches, any or all of the fittings in a controlled
group may also be controlled in the traditional way - by turning off the power. The control circuit will continue to
operate properly even if some of the luminaires in the group have had mains power removed.
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Dimming option
dimming affords local control to the end-user whereby a simple, momentary, push-to-make wallswitch
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can be used to raise or lower the lighting level or to toggle the output ON/OFF. The momentary action switch is
connected between Live and the detector's
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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. If the switch is held
continuously, and the output reaches maximum, the light output will remain at this level until the switch is
released - a latching switch may be connected in parallel allowing the occupancy detection to be overridden on
(Note: If the initial direction was down, when the output reaches minimum it will ramp back up automatically).
Several detectors may also be connected to one common momentary action switch in parallel - as long as all
detectors and the switch are powered from the same phase.
Setting the regulating photocell
This product is intended for use with high frequency regulating ballasts with DSI or DALI control inputs. An
infrared programming tool SENSA SENP (96004189) is required for programming the regulating light level set
point. The setting is preserved in the event of a power failure and can be re-programmed any number of times.
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 the 'store' button. The luminaire(s) will blink to acknowledge a successful store operation.
input. A short press of the switch (less than 1 second) will
Commissioning
The factory default settings will be appropriate for most applications. However, the installer does have the facility
to re-programme a wide range of parameters and to set the regulating light level using the SENSA SENP
(96004189) infrared programming tool.
Please read carefully the operating instructions that accompany the programmer prior to performing a
programming operation.
Below is a table showing the pre-set factory settings and a brief explanation of each parameter.
These parameters may be re-programmed any number of times and all settings will be retained in the event of a
power loss.
Parameter
Options
Pre-set
Power up
on/off
on
Response
auto/semi-auto
auto
Off delay
5 - 35 mins
20 mins
Start lamps
max/min
max
Bright out
yes/no
no
Fade to off
yes/no
no
When vacant
low/off / reg <25%
off
Important Additional Notes
1.
A means for disconnection must be incorporated in the fixed wiring in accordance with the current wiring regulations.
2.
Although nominally 12V, the dimming output is not ELV and therefore should be treated with the same respect as mains
with regard to wiring practice. The 0V line of the dimming output is almost at Neutral potential.
3.
The dimming control output should be connected only to the control input of the ballasts - never to other detectors.
4.
This equipment should be used to control only those ballasts powered from the same phase as the detector.
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, for some
luminaires a maximum number of switching cycles is specified in order to achieve a predicted lamp life. Please refer to the
data sheets of the luminaires to ensure that they are compatible with automatic controls in this respect.
Notes
Sets the luminaire state at power up irrespective of occupancy. Useful in
reducing start-up load following power cut. Power-Up off - responds to
occupancy after 30 seconds.
If set to auto, the presence detector switches the luminaire on and off
automatically. If set to semi-auto, the luminaire will not turn on automatically
when a person enters the area. It can be turned on using the hand-held
controller or by toggling the power switch. When the area is vacated, the light
will turn off automatically.
The time for which the luminaire will stay on following the last detected
movement. Also 10 second setting for walk-testing.
Sets the level at which the lamps strike when turning on.
If set to yes, movement fails to refresh the off delay if the ambient light level
exceeds 125% of the set level, and the luminaire will switch off when the
the off delay has elapsed. (Note Dimming must be set to 100%.)
When no presence is detected, and after the off delay period, the lamps can
fade out instead of switching off (approx 80 seconds to fade from100% to 0%).
These are the options for a vacant area after it has timed out. Luminaires can
turn off, remain at minimum output, or regulate with a 25% output limit, until
the next period of occupancy. If programmed to remain at minimum or regulate
below 25%, there is a programmable option to switch off after 3 times the Off
delay.
W4047H
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