Power Supply And Source Recovery Mode; Figure 8-3. Power Supply And Source Failure Recovery Mode - ADTRAN MX2800 User Manual

Chapter 8. Power Loss Recovery

POWER SUPPLY AND SOURCE RECOVERY MODE

In this mode, two power supply cards are installed and are
connected to two individual power sources. In this mode, the
MX2800 handles any combination of power source or power
supply failure.
Much like the backup design for the controller cards, the MX2800 is
able to internally re-route the power source if a power supply card
and the opposite power source fail. For example, in the illustration
given in Figure 8-3, failed P
C
B. In a case like this, the MX2800 automatically connects P
S
This configuration is only available with DC power supplies.
8-4
A; and healthy P
ARD
B to C A.
OURCE ARD

Figure 8-3. Power Supply and Source Failure Recovery Mode

MX2800 User Manual
S A is connected to healthy
OWER OURCE
S B is connected to failed C
OWER OURCE ARD
OWER
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