Cisco 3845 - Security Bundle Router Manuel de démarrage rapide - Page 20
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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 10.0 ± 0.5 in-lb (1.1 ± 0.05 N-m).
Caution
Figure 12
DC Power Connections for Cisco 3825 Routers (Typical)
+
+
A
B
Negative DC input
Figure 13
DC Power Connections for Cisco 3845 Routers
Negative DC input
24-60
19-8 A
Safety ground
Negative polarity input
0V (return)
Install the plastic safety covers over the terminals. (See Figure 14 or Figure 15.)
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
Organize and secure the wires using cable ties as shown in Figure 14 or Figure 15. Make sure that the wires do not
Step 7
project above or below the front panel of the router.
Step 8
If a second power supply is installed and intended for use, repeat Step 1 through Step 7 for the second power supply.
Step 9
Turn on power to the DC circuit. Be sure to remove tape used to secure the circuit-breaker switch in the OFF position.
20
-DC, input A
Return, input A
Safety ground
Return, input B
-DC, input B
Terminal
block
A
Positive DC input
Positive DC input
24-60
Return, input A
+DC, input A
Safety ground
+DC, input B
Return, input B
Terminal
block
+
+
B
19-8 A
Safety ground
0V (return)
Positive polarity input