Emerson Liebert iCOM - Manual (Page 53)

Installing a Liebert iCOM Unit-to-Unit Network
47
Figure 29 Liebert iCOM input-output control board
Liebert vNSA
The Liebert vNSA is designed to connect multiple Liebert iCOM control devices. 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 120V or 240VAC 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 trans-
mit-and-receive pins. See the Liebert vNSA user manual, SL-18840, for more details.
The number of ports available for connecting Liebert iCOM control devices varies by model as shown
in Table 11. 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.
Table 11
Ports available for connecting Liebert iCOM control devices
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
P65 P64
(RJ-45 Jack)
P66
P63 P61
P67