Cisco Systems 7500 Series manual Removing the Terminal Block Cover and Attaching Power Cables

Chapter 3 Installing a Cisco 7500 Series Router

Installing the Cisco 7505

R E V I E W D R A F T — C I S CO CO N F I D E N T I A L

Warning Before working on a chassis or working near power supplies, unplug the power cord on AC units or disconnect the power at the circuit breaker on DC units. This unit might have more than one power cord. To reduce the risk of electric shock, disconnect the two power supply cords before servicing the unit.

Use this procedure to connect power to a DC-input power supply in the Cisco 7505:

Step 1 Loosen the two captive screws that secure the terminal block cover. (See Figure 3-6a.)

Step 2 Pull the terminal block cover away from the terminal block. (See Figure 3-6b.)

Step 3 Feed the return (RTN) and –48V wires through the large hole in the terminal block cover. (See Figure 3-6c.)

Step 4 Attach a nylon cable tie to secure the cable leads to the terminal block cover. (See Figure 3-6c.)

Step 5 Attach the RTN and –48V leads to the terminal block. Note the color coding. (See Figure 3-6d.) Color code selection depends on the color code of the DC power source at your site. Typically, green or green/yellow is used for ground, black is used for RTN, and red or white is used for –48V. No matter which color coding is used, make certain it matches that used at the DC source.

Figure 3-6 Removing the Terminal Block Cover and Attaching Power Cables

a		b Caution: Do not strain the connection at the terminal block
-48/-60V—		-48/-60V—
20/16A		20/16A
RTN	-48	RTN	-48
		POWER SUPPLY
	TERM. BLOCK COVER
	- USE ONLY WITH
	NEC CLASS 3
	WIRING
	- USE COPPER
	CONDUCTORS		POWER SUPPLY
			TERM. BLOCK COVER
			- USE ONLY WITH
			NEC CLASS 3
			WIRING
			- USE COPPER
			CONDUCTORS

Terminal block cover and captive screws

c d

Ground terminal

-48/-60V—20/16A

RTN -48

Cable strain relief nylon cable tie

Step 6 Attach the ground cable to the ground terminal. (See Figure 3-6d.)

Step 7 Replace the terminal block cover. (See Figure 3-6b.)

Step 8 Tighten the captive screws on the terminal block cover. (See Figure 3-6a.)

H2537

	Cisco 7500 Series Installation and Configuration Guide
3-10	OL-5008-03 B0