Cisco Systems MGX 8800, MGX 8900 Connect the DC PEM to the MGX 8950 Switch

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Cisco MGX 8800/8900 Series Hardware Installation Guide
Releases 2 - 5.2, Part Number OL-4545-01, Rev. H0, May 2006
Chapter5 Installing the Cisco MGX Switch or Gateway
Installing the MGX 8950 Switch
Figure5-50 Interconnect Power Connections for AC
Connect the DC PEM to the MGX 8950 Switch
A system power cable carries –48 VDC current from a DC-PEM to the backplane (see Figure 5-51).
Caution The DC power interconnect cables from each PEM must be connected to the backplane. If the cables are
not connected, the power supply monitoring circuit will mistake this as voltage failure and will result in
a tripped circuit breaker.
AC IN
AC IN
DC OUT
AC IN
AC IN
DC OUT
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