Installing Dc Power Supplies - Dell E1200i ExaScale Installation Manual

Installing DC Power Supplies

The E1200 system requires a minimum of one DC Power Entry Module (PEM) to operate, but 2 are
recommended for redundancy. To comply with safety agency and EMI regulations, you must install
covers on all power supply slots not containing a PEM. Connect the PEMs to the appropriate branch
circuit protection as defined by local electrical codes.
For full redundancy, each PEM must be attached to an independent power source with a dedicated circuit
breaker. For example, the PEM in slot 0 connects to circuit breaker A and the PEM in slot 1 connects to
circuit breaker B.
The E1200 chassis contains two DC PEM slots, as shown in
Figure 8-1. PEM 0 and PEM 1 Chassis Locations
21 21 21 21 21 21 21
22 22 22 22 22 22 22
23 23 23 23 23 23 23
RP4L-RPMC RP4L-RPMC RP4L-RPMC RP4L-RPMC RP4L-RPMC RP4L-RPMC RP4L-RPMC
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online online online online online online
fail fail fail fail fail fail
online
fail
P E M 0
SF4L-SFMC
SF4L-SFMC SF4L-SFMC SF4L-SFMC
Force10 Networks
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online online online
fail
fail fail
The DC PEM shown in
Figure 8-2. E1200i DC PEM
21 21 21 21 21 21 21
22 22 22 22 22 22 22
PRIMARY PRIMARY
23 23 23 23 23 23 23
RP4L-RPMC RP4L-RPMC RP4L-RPMC RP4L-RPMC RP4L-RPMC RP4L-RPMC RP4L-RPMC RP4L-RPMC RP4L-RPMC
Force10 Networks Force10 Networks Force10 Networks Force10 Networks Force10 Networks Force10 Networks Force10 Networks Force10 Networks Force10 Networks
online online online online online online online online online online
fail fail
fail reset reset fail fail fail fail fail fail fail
online
fail
SF4L-SFMC SF4L-SFMC SF4L-SFMC SF4L-SFMC SF4L-SFMC SF4L-SFMC
Force10 Networks Force10 Networks Force10 Networks Force10 Networks Force10 Networks Force10 Networks
online online online online online online online
fail fail fail fail fail fail fail
Figure 8-2 is used in both the E1200 and E1200i DC chassis.
Figure
P E M 1
8-1.
Installing DC Power Supplies
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