Cisco 3745 Manual de inicio rápido - Página 15

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Crimp the terminals onto the DC power input wires.

Step 3

Warning

When stranded wiring is required, use approved wiring terminations, such as closed-loop or spade-type with

upturned lugs. These terminations should be the appropriate size for the wires and should clamp both the

insulation and conductor. Statement 1002

Remove the plastic cover from the terminal block. Save it for reinstallation after you finish wiring.

Step 4

Connect the DC power input wires to the terminal block, as shown in Figure 6.

Step 5

Warning

The illustration shows the DC power supply terminal block. Wire the DC power supply as illustrated. The proper

wiring sequence is ground to ground, positive to positive, and negative to negative. The ground wire should always

be connected first and disconnected last. Statement 239

Warning

An exposed wire lead from a DC-input power source can conduct harmful levels of electricity. Be sure that no

exposed portion of the DC-input power source wire extends from the terminal block plug. Statement 122

Do not overtorque the terminal block screws. The recommended torque is 8.0 ± 0.5 in-lb (0.9 ± 0.05 N-m).

Caution

Figure 6

Terminal Block Connections for DC Input Power

Negative polarity input

0V (return)

Safety ground

Negative DC input

Install the plastic cover over the terminal block.

Step 6

Warning

The safety cover is an integral part of the product. Do not operate the unit without the safety cover installed.

Operating the unit without the cover in place will invalidate the safety approvals and pose a risk of fire and

electrical hazards. Statement 117

Secure the wires using cable ties.

Step 7

If your router has a second power supply installed, repeat Step 1 through Step 7 for the second power supply.

Step 8

Turn on power to the DC circuit.

Step 9

Connecting Routers to the Cisco Redundant Power System

If your router uses the Cisco Redundant Power System (RPS), refer to the Cisco RPS Hardware Installation Guide for

instructions about the power connections.To locate these documents, see the "Where to Go Next" section on page 24.

0V (return)

Positive polarity input

Safety ground

Positive DC input