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3.7 Connect Network Surge protection
Connect a 10 base-T/100 network cable to the network surge protection IN jack on the rear of the
UPS. Connect from the OUT jack with network cabling to network equipment (see Figure 11).
Figure 11 Connect network surge protection
3.8 Connect Communication Interface
Determine what type of communication connection to use to manage the UPS. The Liebert PSI XR
can be monitored with any of these communication methods:
• Contact closure
•USB
• SNMP (requires optional IS-WEBRT3 card)
Connect the appropriate, factory-supplied cable to the interface port on the rear of the UPS and to the
computer interface port.
See 3.9 - Set Up Liebert MultiLink software for details and installation information. Also refer to
6.4 - UPS Communications.
Figure 12 Connect communication interface
DC 24V
OUTPUTINPUT
EPO
VOLTAGE=110V
VOLTAGE=1 20V
VOLTAGE=1 27V
2 1
FUNCTION
Network
Equipment
Network surge
protection IN Jack
Network surge
protection OUT jack
DC 24V
OUTPUTINPUT
EPO
VOL TAGE=1 10V
VOL TAGE=12 0V
VOL TAGE=12 7V
2 1FUNCTION