LEGRAND Raritan PX3-3000 Series, User Manual

Page: 66 / 977

Chapter 3: Initial Installation and Configuration
45

One device is connected to another device via two cascading cables -
USB and Ethernet cables.
Power-Sharing Restrictions and Connection
Two PX3 devices can share power supply to their controllers via
EXPANSION ports, so that when either PX3 controller fails to receive DC
12V power from its inlet(s), it continues to receive backup power from
another PX3 device which functions properly and therefore remains to be
accessible to users.
For documentation purpose, the term "power-sharing mode" is used
to describe the status when the 12V power supply from the inlet to a
PX3 controller fails, causing that controller to receive power from
another PX3 device.
Before making a power-sharing connection, first read Power-Sharing
Configurations and Restrictions
(on page 47), and remove unsupported
equipment from BOTH PX3 PDUs.
After a PDU enters the power-sharing mode, some of its data/operations
remain to be available while other data/operations are no longer
available.
Unavailable data or operations on the PDU that enters the
power-sharing mode:

All outlets lose power, and enter the "disabled" state.

No outlet switching can be performed if the PX3 is an
outlet-switching capable PDU.