Cisco Systems MGX 8230 Connecting Power for AC Systems

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Cisco MGX 8230 Edge Concentrator Installation and Configuration
Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001
Chapter4 Enclosure Installation
Rack Mounting an MGX 8230
Step 9 Before you turn on the system power, check the supply voltage.
The screws at positions 1 and 3 on the pluggable terminal block are convenient measuring points. Also,
check the impedance between the safety ground (screw at location 2 on the pluggable terminal block)
and the chassis. It should be close to 0.
Step 10 Turn the circuit breaker on all ins t all e d PE M s t o the off position.
Step 11 Turn on the source power, and check the voltage at the screws at positions 1 and 3 on the pluggable
terminal block for all installed PEMs.
Step 12 Turn off the source power, and go to the section “Install the Cable Manager,” which is followed by the
section “Power up the MGX 8230.”
Connecting Power for AC Systems
This section describes how to connect AC power to an MGX 8230, which has an optional AC power
supply.
The optional AC power suppl y tr ay is f act ory -in sta lle d on th e bott om of t he MGX 82 30 c has sis. It is on e
rack unit high and can hold one or two 1200 Watt AC Power Supply Modules. These modules must be
re-installed if they were removed during installation of the card cage.
Figure4-11 il lustrate s a rear view of an AC Pow er Supply Module. E ach AC Power Supply Mo dule has
its own independent connectors, power switch, and LEDs.
Figure4-11 Optional 1200 Watt AC Power Supply Module, Rear View
Each AC power supply modu le ta ke s AC power and conve rts it to -48 VDC, whi ch is the n r out ed t hro ugh
an external cable to the MGX 82 3 0 bac kplane connector. (There are no DC PE M s i n an AC-pow ered
MGX 8230.) Each power supply provides a signal that indicates the status of the power supply.
Note There must be at least two inches of empty space around the front and rear panels of the AC power
supply for cooling air.
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AC DC