Table 7: NAE55 LEDs Designation, Normal Status, Description, and Other Conditions
Descriptions/Other Conditions
Normal
LED
On Steady (Green) = Ethernet connection is established at 100 Mbps.
On Steady (Yellow) = Ethernet connection is established at 1,000 Mbps.
On Steady
100/1000 LINK
(Green/Yellow)
On Steady = Controllers are defined to FC A (FC Bus 1 or N2 Trunk 1) in the
NAE55, but none are communicating (NAE55 transmitting only). Flicker = Normal
communications; FC A port is transmitting and receiving data. Flickers are generally
in sync with data transmission but should not be used to indicate specific
transmission times.
Off Steady = No field controllers are defined to FC A (FC Bus 1 or N2 Trunk 1) in
the NAE55.
Flicker
FC A (Green)
(NIE55 models do not
have FC Bus terminals.)
On Steady = Controllers are defined to FC B (FC Bus 2 or N2 Trunk 2) in the
NAE55, but none are communicating. (NAE55 transmitting only) Flicker = Normal
communications; FC B port is transmitting and receiving data. Flickers are generally
in sync with data transmission but should not be used to indicate specific
transmission times.
Off Steady = No field controllers are defined to FC B (FC Bus 2 or N2 Trunk 2) in
the NAE55.
Flicker
FC B (Green)
(NIE55 models do not
have FC Bus terminals.)
Flicker = Data traffic between NAEs. For an NAE55 that is not a Site Director, this
LED indicates regular heartbeat communications with the Site Director. For a Site
Director NAE55, flashes are more frequent and indicate heartbeat communications
from all other NAE devices on the site. For a single NAE55 on a network without
an Application and Data Server (ADS), there is no flicker.
Varies (see next
column)
PEER COMM (Green)
On Steady = NAE55 software is running.
On 1 second, Off 1 second = NAE55 software is in startup mode.
On 0.5 seconds, Off 0.5 seconds = NAE55 software is shutting down.
Off Steady = Operating system is shutting down or software is not running.
On Steady
Run (Green)
On Steady = 24 VAC power is present.
Off Steady = Loss of 24 VAC power. In the Off Steady condition, the NAE55 can
be running on battery power. Also see the POWER LED.
On Steady
24 VAC (Green)
On Steady = Battery fault. Replace the battery. Battery is not connected or cannot
be charged. The BATT FAULT LED may remain On for up to 24 hours after initially
powering on the NAE55. If the BATT FAULT LED remains on longer than 48 hours
after initially powering on the NAE55, check the battery connection or replace the
battery.
Off Steady
BATT FAULT (Red)
On Steady = General Fault. Fault conditions are user configurable in software.
Preconfigured fault conditions include excessive Central Processing Unit (CPU),
flash or memory use, excessive CPU or Printed Wire Board (PWB) temperature,
or Battery Fault. In normal operation, the GENL FAULT LED stays on steady for
the first half of the startup sequence.
Off Steady
GENL FAULT (Red)
Repair Information
If you replace an NAE55 for any reason or add a new
NAE55 to a site, you must update the site registration to
ensure that the new NAE55 is recognized and able to
communicate. Refer to the
Replacing an NAE
section in
the
NAE Commissioning Guide (LIT-1201519)
for
information on replacing an NAE and configuring the new
NAE to communicate in a
Metasys
system site.
Except for replacing the data protection battery, the
NAE55 cannot be repaired in the field. If the NAE55 fails
to operate, it must be replaced.
Batteries removed from this device must be recycled or
disposed of in accordance with local, national, and
regional regulations. Only trained technicians or qualified
building maintenance personnel should service Johnson
Controls products.
11
NAE55/NIE55 Installation Instructions
