Acuity Controls nLight nCM PC RJB Installatieblad
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PRODUCT OVERVIEW
The nCM ADCX RJB and nCM PC RJB photocell sensors are ceiling/surface mount devices that provide
a range of daylight harvesting features for nLight Control System installations with finished ceilings (e.g.
ceiling tiles, sheetrock, plaster). The nCM PC RJB version provides on/off photocell control by default,
while the nCM ADCX RJB provides automatic dimming photocell control by default. Ideal for spaces
with windows, such as vestibules, corridors, classrooms, or offices, these sensors work by first monitoring
daylight conditions in a room. They then signal networked nLight control devices to adjust their dimming
outputs (and/or turn lighting off) to obtain maximum energy savings while ensuring adequate lighting
levels are maintained.
The nCM ADCX RJB sensor controls nLight enabled luminaires (e.g. VTLED Family from Lithonia), nLight
dimming relay packs (e.g. nPP16 D or nSP5 PCD), or auxiliary dimming output devices (e.g. nIO D).
The nCM PC RJB switches nLight enabled luminaires or any relay/dimming device in an nLight system
(e.g. nPP16). Both sensors can also be used together with nLight occupancy sensors. Manual override or
adjustment of the dimming level is possible via WallPod dimmers or through the SensorView software.
Both versions are powered via the nLight network bus and can communicate with one or more nLight
enabled luminaires or nLight relay/dimming packs to enable control of fixtures individually or in groups.
These configurations work standalone and do not require a connection to a larger nLight network.
FEATURES
• Automatic Dimming Photocell Control (nCM ADCX RJB model only)
• Full On/Off Photocell Switching Control (disabled by default on nCM ADCX RJB)
• Optional Inhibit mode: Photocell can prevent lights from turning on if adequate daylight is available,
but does turn lights off (nCM PC RJB model only)
• LED status indicator
• Adustable settings (e.g. set-points) via push-button or SensorView software application
• Broadcasts photocell information over a local nLight channel
• Remotely upgradeable firmware
nLIGHT NETWORKED OPERATION
nCM ADCX RJB and nCM PC RJB sensors are native nLight devices meaning they are individually
addressable and digitally communicate to other nLight devices such as WallPod switches, power
packs, nLight-enabled digital luminaires, and other sensors. All devices are wired using CAT-5e
cabling; creating a local nLight control zone. Once linked to an nLight Gateway, either directly or via
an nLight network backbone, the zone becomes capable of remote status monitoring, configuration,
and control with nLight SensorView software.
SPECIFICATIONS
PHYSICAL
SIZE: 4.55" Dia. (11.56 cm)
1.55" Deep (3.94 cm)
WEIGHT: 6 oz
MOUNTING:
Ceiling Tile / Sheetrock Surface
3.5" Octagon Box
Single Gang Handy Box
COLOR: Matte White
nLIGHT NETWORK CONNECTION:
2 RJ-45 Ports (via an included RJ45 splitter)
WIRES / CABLES:
(1) CAT5e patch cable, 1ft (factory installed)
Acuity Controls | 900 Northrop Road, Wallingford, CT 06492 PHONE: (800)-727-7483 nLightcontrols.com ©2015 Acuity Brands Lighting, Inc. All rights reserved. 01/26/15
ELECTRICAL
nLIGHT BUS POWER CONSUMPTION: ~3 mA
ENVIRONMENTAL & OTHER
OPERATING TEMP
Standard: 14º to 160º F (-10º to 71º C)
LT Option: -40º to 160º F (-40º to 71º C)
RELATIVE HUMIDITY
Standard: 20 to 75% non-condensing
LT Option: 20 to 90% non-condensing
SILICONE FREE, ROHS COMPLIANT
TITLE 24 SYSTEM COMPONENT
ASSEMBLED in U.S.A.
nCM ADCX RJB & nCM PC RJB
FAMILY INSTRUCTIONS
DAYLIGHT HARVESTING & ON/OFF PHOTOCELL
CEILING / SURFACE MOUNT • REAR RJ-45 PORT
MODEL # OPTION SUFFIXES
PC = On/Off Photocell
ADCX = Automatic Dimming Control
DZ = Dual Zone On/Off Control
LT = Low Temp / High Humidity
PHOTOCELL OPERATION
The nCM ADCX RJB sensor continuously adjusts
a space's lighting to achieve maximum daylight
harvesting while maintaining a minimum
light level referred to as the set-point. When
no daylight is available, the sensor allows the
controlled dimmable lighting to operate at
its full bright level. As daylight increases and
begins to contribute to the overall light level of
the room, the Automatic Dimming Control (ADC)
feature starts dimming the room proportionally,
eventually reaching the full dim level (or
optionally switching off, see paragraph below).
As the daylight levels fall, the ADC feature will
again take control of the lights; reducing the
dim level (increasing the brightness) in order to
achieve the necessary total light level. At the point when all daylight contribution is gone, lighting will be
back at its full bright level.
The nCM PC RJB sensor does not control
dimming, but instead signals nLight devices
located elsewhere within the sensor's zone to
switch a controlled lighting load on when more
light is needed. The lights are also signaled to
turn off when light is above the set-point plus
a 10% safety factor and deadband. The safety
factor will prevent the system from cycling
when the light level is very near the set-point.
The deadband is the level of light contributed by
the artificial lights being controlled. This level
is tracked so if the lighting conditions change
(for example a lamp burns out) the point at
which the lights turn off is adapted accordingly.
If the photocell can not view the lights being
controlled (for example if it is looking up at skylights), there is no deadband and the sensor is said to be
working open loop. There is also an adaptive cloud delay (optional) before the photocell turns the lights off
to prevent the system from cycling on a cloudy day.
AMPLE DAYLIGHT
Set-point
Lights Full ON
Lights Full DIM
AUTOMATIC DIMMING (nCM ADCX RJB)
AMPLE DAYLIGHT
Set-point
NO DAYLIGHT
Lights Turn ON
Lights Turn OFF
ON/OFF CONTROL (nCM PC RJB)
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