Refer to the
NCM45x0-2 Network Control Module
Commissioning Guide (LIT-12011176)
for information
about these different types of direct and dial-up
connections to the NCM.
The RS232C B/Port 5 serial port can be used for these
applications: configured OWS, printer, modem, OT, or
local
Network Terminal (NT)
. Refer to the
NCM45x0-2
Network Control Module Commissioning Guide
(LIT-12011176)
for more information about these options.
USB Port
The USB port is not used. Do not connect any device to
this port.
Ethernet Port
The Ethernet connection (10 or 100 Mb/s) is an 8-pin
RJ-45 network port (
). Use the Ethernet port to
connect to IP networks. An NCM45x0-2 with a 100 Mb/s
connection communicates properly with older NCMs that
are communicating at 10 Mb/s.
Wiring the NCM
Important:
Do not connect 24 VAC supply power to the
NCM
before finishing wiring and checking
all wiring connections. Short circuits or
improperly connected wires may result in
permanent damage to the equipment.
Important:
Use copper conductors only. Make all wiring
in accordance with local, national, and
regional regulations. The NCM is a
low-voltage (<30 VAC) device. Do not
exceed the NCM electrical ratings.
Important:
Do not remove the terminal block keys. The
terminal block plugs and the terminal
sockets are keyed to fit together in the
correct configuration only.
Important:
Prevent any static electric discharge to the
NCM. Static electric discharge can damage
the NCM and void any warranties.
Important:
Make sure the building automation network
wiring meets the specifications, rules, and
guidelines in the
section
in this document.
Important:
For the NCM4510-2 model, do not remove
the plug that is inserted into the top
FC
Bus
terminal, or install any connector into this
port. The port is only used if the unit is
migrated to an NAE45 sometime in the
future.
Mount the NCM securely before wiring the NCM. See the
section.
Follow these guidelines when wiring an NCM:
•
Route the supply power wires and communication
cables at least 50 mm (2 in.) away from the vent slots
on the sides of the NCM housing.
•
Provide slack in the wires and cables. Keep cables
routed neatly around the NCM to promote good
ventilation, LED visibility, and ease of service.
To wire the NCM:
1. Connect the Ethernet communication cable to the
RJ-45, 8-pin Ethernet port shown in
2. For the NCM4510-2, connect the three N2 Bus wires
to the removable 4-terminal plug as shown in
(labeled FC Bus). If a shield is present, follow
standard practices for terminating a shield that are
discussed in the N2 Bus literature. Refer to the
N2
Communications Bus Technical Bulletin (LIT-636018)
.
Note:
If the NCM is connected to an N2 Bus, you
must set the
End-of-Line (EOL)
switch to the
proper position. See the
section in this document.
Figure 5: N2 Bus Wiring
3. For the NCM4520-2, connect the wires from the LON
network trunk to the removable 3-terminal plug as
shown in
.
5
NCM45x0-2 Series Network Control Module Installation Instructions
