Liebert NX UPS System user manual Fan120, Redundant Fan for Power Module, Standard AC Fan

Options—For Assembly Inside the UPS Cabinet

8.1.2Redundant Fan for Power Module

In addition, to ensure sufficient cooling power at various operation modes with 100% rated load, a redundant power module fan set can be supplied, thus ensuring continuity of UPS operation even with the failure of some fans. No extra footprint is required.

Figure 37 Redundant power module fan set

	Redundant AC Fan
			Standard AC Fan
(AC Fan 1-1)	(AC Fan 1-2)	(AC Fan 1-3)	(AC Fan 1-4)

Fan120

Fan120 Fan120 Fan120

TOP VIEW

Figure 38 Communication bays and cable location

DB-9

Monitor

Board

Gland plate for cable exit

Location Preferred Device This Location

RS-232-1 DB-9 (COM Port 1) - Serial MultiLink Software (Port Setting 2400 Baud)

RS-232-2 DB-9 (COM Port 2 - Service Access Software (Port Setting 9600 Baud)

Location	Preferred Device This Location
Top Bay	Relay Card (no port setting required)
Mid Bay	Multiport4 (no port setting required)
Bottom Bay	OCWeb LB / OC485 (port setting 2400 Baud)

Top

Mid

Bottom

Suggested routing of customer-supplied communication cables

Notes:

a)All Intellislot cards are supported in any bay.

b)Port sharing is:

-PERMITTED between RS232-x DB9 devices and Relay / Multiport4 Intellislot cards (i.e., Serial Multilink software will work from RS232-1 DB9 also when relay card is inserted in the top bay.

-NOT PERMITTED between RS-232-x D-B9 devices and OCWeb / OC485 cards (i.e., Serial MultiLink software will not work from RS232-1 DB-9 when OCWeb card is inserted in the top bay.

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