Johnson Controls Metasys NAE55, Руководство по установке, Страница: 2 / 20

Dimensions
Figure 2: NAE55 showing dimensions and mounting
orientation
Physical Features
The following figure displays the physical features of
the network engine. The accompanying table provides
a description of the physical features. A modem jack
appears on models with an internal modem and a
LonWorks terminal for LonWorks models (Figure 2).
Figure 3: Physical features of Network Engine (modem
and LON ports not shown)
Table 1: Network Engine physical features
Callout Description
1 USB ports
2 RS-232 serial ports
3 LonWorks terminal (LonWorks models only,
Figure 2)
4 Field controller buses (FC Bus or N2 Bus
terminal)
5 24 VAC power terminal
6 End-of-line switches
7 Wall mount feet
Table 1: Network Engine physical features
Callout Description
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 6).
• 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 Technical specifications 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 4).
• Mount the power supply above the network engine
to ensure adequate heat dissipation and to position it
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 4: DIN rail mount dimensions and mounting
space requirements, mm (in.)
NAE55 Installation Guide 2