Emerson Liebert iCOM Manual De Usuario

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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