Location Considerations - Johnson Controls NAE55 Installation Manual

Figure 4: Physical features of Network Engine
(MS-NAE5510-3 shown)
Table 1: Network Engine physical features
Callout Description
1 USB ports
2 RS-232 serial ports
LonWorks terminal (LonWorks models
3
only)
Field controller buses (FC Bus or N2 Bus
4
terminal)
5 24 VAC power terminal
6 End-of-line switches
7 Wall mount feet
8 System status LEDs
9 System reboot switch
10 Data protection battery compartment
11 RJ-45 8-pin Ethernet port
Mounting

Location considerations

Follow these guidelines when mounting the network
engine:
• Ensure that the mounting surface can support the
network engine and any user-supplied enclosure.
• Mount the network engine in the proper
orientation (Figure 7).
• Mount the network engine on an even surface in
wall mount applications whenever possible. If you
must mount the network engine on an uneven
surface, be careful not to crack the wall mount
feet or housing when tightening the screws. Use
shims or washers to mount the unit securely on
the mounting surface.
• Mount the network engine in areas free of
corrosive vapors and observe the environmental
limitations listed in the
section.
• Do not mount the network engine on surfaces
that are prone to vibration or in areas where
electromagnetic emissions from other devices
or wiring can interfere with network engine
communication.
• Allow sufficient space for running cable and wire,
making terminal connections, and accessing
battery compartment (Figure 5).
• Mount the power supply above the network
engine to ensure adequate heat dissipation and to
position close to the power wiring conduit.
On panel or enclosure mount applications, observe
these additional guidelines:
• Do not install the network engine in an airtight
enclosure.
• Mount the network engine so that the enclosure
wall or the transformer does not obstruct
ventilation of the network engine housing.
Figure 5: Network Engine DIN rail mount
dimensions and mounting space requirements,
mm (in.)
Each network engine application is different, and
no general guidelines can be given about the
heat dissipating devices that may be mounted in
an enclosure with the network engine. Monitor
the network engine processor temperature for
each application to determine the acceptable
Technical specifications
NAE55/NIE55 Installation Guide 3