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2.2 Liebert NX UPS to Non-Liebert NX UPS
1. Connect the power cables of the adapter to the Phase A, Neutral and Ground Output of each UPS.
2. Connect the LBS cable to COM1 of the LBS Signal Adapter connected to the Liebert NX.
3. Connect the other end of the LBS cable to X4 on the parallel board (UHW241M3) in the NX UPS.
4. Connect the communication cable (up to 492 ft. [150m]) to the COM2 interface of each LBS Signal
Adapter.
5. The switches of LBS signal adapters connected to the Liebert NX should be in the right position
and the switches of LBS signal adapters connected to the non-NX UPS should be in the left
position (see Figure 5).
Figure 5 Connecting a Liebert NX to a non-NX UPS
!
WARNING
Installation by qualified electrical personnel only—hazardous voltage may be present at the
UPS output connectors.
Table 1 Human interface—indicators and switches
Item Description
Power port Connect to Phase A, Neutral and Ground of output of UPS.
LED1 (red) Power LED. It illuminates when the power is on, turns off when the power fails.
COM1
LBS Signal interface.
Connect to NX series UPS unit.
COM2
RS485 interface.
Connect to other Signal Adapter.
Green LED: Communication Power is OK.
Yellow LED: Adapter is connected to Non NX series UPS.
SWITCH
Switch to left: Connect to Non-NX series UPS unit.
Switch to right: Connect to NX series UPS unit.
Table 2 Electrical rating
Description Rating
Voltage 120V-277VAC
Frequency 45-65HZ
Current 0.2A Max
Table 3 Part number description
Description Part Number
150 Meter Kit NX150MLBSKIT
50 Meter Kit NX050MLBSKIT
COM1 COM2 SWITCH COM1 COM2 SWITCHPower ON
LED1
Power ON
LED1
Power Cable
Connect to NX UPS
LBS
Cable
Power Cable
Connect to non-NX UPS
Communication Cable
up to 492 ft. (150m)