Cisco AS5400XM Посібник з встановлення - Сторінка 14
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Друкувати сторінкуSupplying Power
A readily accessible two-poled disconnect device must be incorporated in the fixed wiring.
Warning
Statement 1022
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Warning
Statement 1003
Before connecting or disconnecting ground or power wires to the chassis, ensure that power is
Warning
removed from the DC circuit. To ensure that all power is OFF, locate 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. Statement 140
This product is intended for installation in restricted access areas and is approved for connection using
Note
12 or 14 AWG copper conductors only. The installation must comply with all applicable codes.
See
Figure 3-15
Step 1
Note the orientation of the DC power supply. The power supply cord should have three wires: 48 VDC
Return, –48 VDC, and a safety ground (green wire).
The illustration shows the DC power supply terminal block. Wire the DC power supply using the
Warning
appropriate lugs at the wiring end, or with no lugs, as illustrated. The proper wiring sequence is
ground to ground, positive to positive, and negative to negative. Note that the ground wire should
always be connected first and disconnected last. Statement 197
Figure 3-15
On/off
switch
Mounting
screw
Cisco AS5400XM Universal Gateway Chassis Installation Guide
3-14
and follow these steps to wire the terminal blocks:
DC Power Supply Connections
Mounting screw
Strain-relief
clamps
IN OK
DC OK
LEDs
OTF
IN OK
DC OK
LEDs
OTF
Strain-relief
clamps
Chapter 3
Installing the Cisco AS5400XM Universal Gateway
Mounting screw
Terminal
block
Terminal
block
OL-6418-02