Cisco AS5400 Quick Start Manual page 28

Step 1 Remove power from the DC circuit.
Warning Before performing any of the following procedures, ensure that power is 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. To see
translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety
Information document that accompanied this device.
Step 2 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).
Warning The illustration shows the DC power supply terminal block. Wire the DC power supply using the appropriate wire
terminations at the wiring end, as illustrated. The proper wiring sequence is ground to ground, return to return,
and negative to negative. Note that the ground wire should always be connected first and disconnected last. To
see translations of the warnings that appear in the publication, refer to the Regulatory Compliance and Safety
Information document that accompanied this device.
Cisco AS5350 DC Power Supply Connections—Single Power Supply
28
Power switch
Source A - NEG
Source A - RTN
Source B - NEG
To DC source
DC connector
Ground
Source B - RTN