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INSTALLING A CONTROL ZONE
nLight devices in zones are wired together in any order, using CAT-5e cables.
Daisy-chain (linear) topology is strongly recommended, however use of splitters is
allowed if the cable run is short. Control zones can have a maximum of 128 nLight
devices wired together in any order on a single bus of CAT-5e cables. The maximum
cable length for a zone is 1500 feet. Typically, one or more of the devices in a zone
will supply sufficient bus power for all devices in the zone (see bus power section on
reverse) to power up and begin default operation without any configuration.
nLIGHT Control Zone - Typical O ce
to
LIGHTING LOAD
B
from
DISTRIBUTION
to BRIDGE PORT
(optional)
A
KEY
485 Bus (CAT-5e)
Wiring steps
1. Locate one of the devices that provides power to the bus, and run CAT-5e
cable to the next nLight device in the daisy chain. Install connectors as
necessary, terminating cables according to T568B. Keep in mind the tips in
the Do's and Don'ts section to help your install go smoothly.
2. If the device location has not previously been recorded, wiring is a good
opportunity to do so. It is very helpful information to have later on. If there
is a second ID# sticker on the device, pull it and use it to record the device
ID#. Adjacent to the sticker, record the device type (i.e. LED fixture or ceiling
sensor) and location (i.e. Room 216 Row 2 ceiling)
3. Plug in the CAT-5e cable to the power-supplying device. It does not matter
which of the RJ-45 ports you plug into on a device with two ports.
4. Plug the other end of the CAT-5e cable into an available RJ-45 port at the
next device.
5. As soon as the device is plugged in and has bus power, the LED should
display a rapid flash followed by two blinks as the device boots up. If you
don't see LEDs come on, re-check the cable, using the tips from the Do's and
Don'ts table.
6. As each device is added, you'll see LED activity during network discovery,
after which the LEDs will settle into default states. Power Pack and switch
(WallPOD) LEDs will be either solid on or off; occupancy sensor LEDs light up
according to what they observe. If the LEDs on a device are instead blinking
in a pattern, see the Device Blink Codes table, at right.
nPP16
B
A
Power Pack
contains relay for control of
lighting load & supplies
low voltage power to
other nLight devices
LINE VOLTAGE CLASS 1
nCM 9
A
Occupancy Sensor
B
Troubleshooting the Zone – Device Blink Codes
All nLight devices are equipped with status LEDs. These LEDs are used in
conjunction with the device's push button for programming and configuration,
but the rest of the time they indicate status and display any error code that may
be present at the device. The table below tells how to interpret common error
codes from the LED blinks.
Blink Pattern
Device has two LEDs, and
the left LED is on solid (not
blinking)
Constant rapid flash of
all LEDs
Slow, steady blink on all
LEDs
Rapid flash for 1 second,
followed by two blinks
Rapid flash for 1 second,
followed by three blinks
Rapid flash for 1 second,
followed by four blinks
nPODM
A
WallPod
Meaning
Device is Polling on the network, wait for polling
to finish.
A software update is in process. Wait for the
update to complete.
Device is in "bootloader" mode - starting up.
Wait for startup to complete.
No TIA-485 communications between devices.
Check CAT-5e cable connections, pins, etc.
Low voltage on the port; this indicates a lack of
bus power. Add a bus-powering device to supply
additional voltage. See nLight Power Consider-
ations for more info.
The device's firmware is incompatible with the
other devices in this zone. Typically indicates
an old, outdated device. Remove the device
and replace it with an up-to-date unit, or use
an nCOMM utility kit to update the device's
firmware to a compatible version.