APPENDIX B: INSTALLING AN UNINTERRUPTIBLE POWER SUPPLY (UPS)
You should connect each NSM5200 to a UPS (not supplied). UPS devices maintain a limited amount of backup battery power if the main power fails.
WARNING: Most UPS devices can be used to supply backup battery power. However, the NSM5200 does not support intelligent UPS devices since they usually include power management software. If you install an intelligent UPS device, do not install the power management software on the NSM5200.
To connect communication and power from the UPS to the NSM5200 (refer to Figure 22):
1.Connect a power cord from one of the NSM5200 power supplies to a standard wall socket.
2.Connect a power cord from the UPS to a standard wall socket or other power source.
3.Connect a power cord from the UPS to the other NSM5200 power supply. In this configuration, the unit will not lose power if either the power source or the UPS fails.
4.Power up the UPS device.
5.Power up the NSM5200, if necessary (refer to Unit Startup on page 25).
USB
OUTPUT POWER 
INPUT POWER 
POWER SOURCE | UPS |
Figure 22. Connecting a UPS to an NSM5200
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