Cisco Systems MDS 9500 Series manual DC PEM for a Cisco MDS 9506 Director

Chapter 2 Installing the Cisco MDS 9500 Series

Starting Up the Switch

Se n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a ck - d o c @ c i s c o . c o m .

Warning When installing or replacing the unit, the ground connection must always be made first and disconnected last. Statement 1046

For more information on DC power supply in the MDS 9506 Director, see the “System Grounding” section on page 2-17.

Figure 2-21shows the location of the terminal block screws and how to insert the lugs through the holes in the front of the PEM to connect them to the screws.

Figure 2-21 DC PEM for a Cisco MDS 9506 Director

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1

5

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4 32

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1	Terminal block screws (+ and -)	4	Exposed portion of positive cable
2	Captive screw	5	Insulated portion of negative cable
3	Ring lug

Note Use 90-degree C fine-stranded copper conductors for North American installations.

To provide power to a DC power supply in a Cisco MDS 9506 Director, follow these steps:

Step 1 Ensure that all power to the DC circuit is off by locating the circuit breaker on the panel board that services the DC circuit. Switch the circuit breaker to the off position, and tape the switch handle of the circuit breaker in the off position.

Step 2 Ensure that the system (earth) ground connection is made. See the “System Grounding” section on page 2-17.

Step 3 Loosen the captive screws on the DC PEM and pull the PEM partially out of the chassis to provide access to the PEM terminal block screws.

Step 4 Connect the positive and negative DC cables to the DC PEM using a 10-32 ring lug for each cable, as follows:

a.Identify the positive and negative DC cables and ensure that both are copper and sized per local and national installation requirements.

	Cisco MDS 9500 Series Hardware Installation Guide
OL-17467-02		2-35