Specifications

Installation and Start-up 7-15
Connecting Power for DC Systems
Figure7-10 PEM Cable Clamp
DC Power to the Fan Cooling Assembly
A cable is provided with the main and booster cooling assemblies for delivering power from the shelf
to the fan cooling assembly. The cable provides for redundancy and the cooling unit can be powered
from two independent shelves.
1 Connect the cable to the connector on rear of the shelf located between the power entry modules
(P1 for primary and P3 for redundant). When fully inserted, the cable will latch into place
preventing accidental removal. To unlatch the connector, use a small screwdriver to slide the
catch lever (located inside the slot on the connector) to the right using a small screwdriver.
2 Connect the other end of the cable to the receptacle on the rear of the fan cooling assembly, P2.
If the redundant portion of the cable is not used, it should be dressed to side using a cable bundle
or a cable management tray.
The cooling assembly cabling for a single and multi-shelf racks is also shown in Figure7-11 and
Figure7-12.