3Com 3C81600 User Guide - Page 28

Connecting an Uninterruptible Power System (UPS

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28 CHAPTER 2: INSTALLING THE ADVANCED RPS With a Type 3 Power Module configured for managed redundancy, if the SuperStack unit's mains fails, the power module will automatically cut in to provide power, without the unit experiencing a reset. If the SuperStack unit's mains returns, it will default back to running on its internal power supply, without experiencing a reset. The module will resume standby operation. Some SuperStack units, when set up for managed redundancy, will use the Advanced RPS as their primary source of power. In the event of Advanced RPS failure, the SuperStack unit's own PSU acts as a redundant power supply and will take over supplying power to the SuperStack unit. Please refer to the documentation that accompanies the SuperStack unit for more information. If the product you wish to connect does not have the auto-enable feature, ensure the power cord is removed from it before attempting to connect the Advanced RPS. Connecting an Uninterruptible Power System (UPS) CAUTION: It is important that, if you use a UPS to supply the Advanced RPS, you use only one UPS output to supply the RPS. The 3Com UPS will supply 325 W input power. Hence the maximum output DC power of the Advanced RPS is reduced to about 200 W.

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28
C
HAPTER
2: I
NSTALLING
T
HE
A
DVANCED
RPS
With a Type 3 Power Module configured for managed redundancy, if
the SuperStack unit
’
s mains fails, the power module will
automatically cut in to provide power, without the unit experiencing
a reset. If the SuperStack unit
’
s mains returns, it will default back to
running on its internal power supply, without experiencing a reset.
The module will resume standby operation.
Some SuperStack units, when set up for managed redundancy, will
use the Advanced RPS as their primary source of power. In the event
of Advanced RPS failure, the SuperStack unit
’
s own PSU acts as a
redundant power supply and will take over supplying power to the
SuperStack unit. Please refer to the documentation that accompanies
the SuperStack unit for more information.
If the product you wish to connect does not have the auto-enable
feature, ensure the power cord is removed from it before attempting
to connect the Advanced RPS.
Connecting an Uninterruptible Power System (UPS)
CAUTION:
It is important that, if you use a UPS to supply the
Advanced RPS, you use only one UPS output to supply the RPS.
The 3Com UPS will supply 325 W input power. Hence the maximum
output DC power of the Advanced RPS is reduced to about 200 W.