Emerson Liebert iCOM, Manual

Page: 96 / 172

Installing a Liebert iCOM Unit-to-Unit Network
Liebert
®
iCOM
®
for Liebert DSE
™
88
Liebert vNSA
™
The Liebert vNSA is designed to connect multiple Liebert iCOMs. The Liebert vNSA contains either
one or two powered industrial rail switches. An optional remote large display can be attached to the
front door as well. All models have a power supply that requires connection to a single phase 120VAC
or 230VAC power source. The enclosure features a key lock for security.
The Liebert vNSA supports autonegotiation, autopolarity and autocrossing, allowing for the use of
standard network cables for connection to each port, rather than special crossover cables. The switch
detects and makes adjustments for the network's speed and transmission mode, polarity and
transmit-and-receive pins. See the Liebert vNSA user manual, SL-18840, for more details.
The number of ports available for connecting Liebert iCOMs varies by model as shown in
Table 24 .
Models with a remote large display attached to the front door utilize one of the available Ethernet
ports in the Liebert vNSA. Models with two switches utilize two ports to connect the switches.
Figure 62 Liebert vNSA with optional remote large display
Table 24 Ports available for connecting Liebert iCOMs
Model
Liebert
vNSA With
Remote
Large
Display
Total Number
of Ports
Number of Ports
Used to Connect
Remote Large
Display
Number of Ports
Used to
Interconnect
Switches
Number of Ports
Available to
Connect Liebert iCOM
Control Devices
Liebert vNSA8-Liebert iCOM
Yes
8 1 - 7
Liebert vNSA16-Liebert iCOM 16 1 2 13
Liebert vNSA8
No
8 - - 8
Liebert vNSA16 16 - 2 14
3.298"
(84mm)
12"
(305mm)
14.25"
(362mm)
DPN001136
Rev. 0