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Hi-Bay Multi-Function Dual Output LightSpot with photocell
The Hi-Bay Multi-Function Dual Output LightSpot is a high performance presence detector with photocell. In all
operating modes, for one of the two outputs, 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, switch the lights 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.
Four operating modes can be configured using the HP2000 Hand-held Programmer:-
1) Two Channel Lighting Controller
The Switched Live output is influenced by the photocell while the Volt-free output is not. The Switched Live and
Volt-free outputs have independent Off-delay timers. The Volt-free output operates in AUTO mode while the
Switched Live output can be operated in AUTO or SEMI-AUTO (Absence Detection) modes. The occupancy
detection may be disabled allowing the MS2021PHB to operate as an active photocell with an Infrared local
override. The HC5 Small +/- keys operate the Switched Live output while the Big +/- keys operate the Volt-free
output.
2) Lighting Control + Water/Fan Controller
Switched Live output for Lighting and Volt-free output for, typically, toilet flush cistern fill valve or extractor fan
Independent Off-delays so that cistern only just fills to flush level following occupancy. There is also an
automatic urinal hygiene fill to flush cycle executed every 24 hours if no occupancy is detected in that period.
3) Lighting Control + Air Conditioning Controller
Switched Live output for Lighting and Volt-free output for Air Conditioning. There are two independently settable
timers for the Air Conditioning Control - a hold-off timer to avoid responding to momentary occupancy, (1, 3 or 5
minutes delay) and a fully programmable run-on timer. The HC7 is a dedicated hand-held Infrared controller for
this mode but the HC5 will also switch the two outputs, as outlined in 1) above.
4) Lighting Control + Emergency Test Controller
This operating mode allows the testing of an area of Emergency Lighting to be conveniently implemented
without the expense of a special, single function controller. The Switched Live output remains available for main
Lighting and the Volt-free output is used to disconnect the Maintained Live to Emergency Luminaires. The
Emergency Test is initiated by the dedicated HC8 hand-held Infrared controller or by the HP2000. A highly
visible BLUE LED indicates that an Emergency Test is underway. Automatically timed test durations of 1
minute or 1, 2, 3 or 5 hours can be commanded and a test can be terminated manually at any point. A lock-out
feature is provided whereby only a 1 minute test can be initiated if there has been either more than 5 minutes of
emergency back-up battery usage or a mains outage, within the preceding 24 hour period.
Connection Example
MS2021PHBF or MS2021PHBSM
R2
VOLT-
FREE
R2
OUTPUT
R1
LIVE OUT*
DETECTOR CONTROL
AUTO OR SEMI-AUTO.
LIVE IN*
NEUTRAL
EARTH
* The Live terminals are internally linked
Note: For aisle or corridor
applications, there is an
optimum orientation for
approach:
LOAD 2
(Max 6 Amps)
NOT INFLUENCED
BY PHOTOCELL.
DETECTOR CONTROL
IN AUTO MODE ONLY.
LOAD 1
(Max 6 Amps)
TOTAL LOAD NOT
INFLUENCED
TO EXCEED 10A
BY PHOTOCELL.
Centre
of facet
Path of optimum
sensitivity
(15mm 230V Solenoid Valve SV2 and Housing SVB are available separately)
Fixing
MS2021PHBSM - 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.
MS2021PHBF - 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 or a 91mm diameter hole in
a hard substrate such as a metal panel. To avoid
L
damage to ceiling tile do not overtighten. Depth
Permanent
required behind ceiling or panel 62mm from front
N
or switched
supply
flange plus an allowance for the minimum bend
E
radius of the cable. No access above the ceiling
is necessary.
Align to arrow
for optimum
sensitivity
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