Version 6.4 25 October 2011
Hardware Installation Manual 5. Cabling the Device
5.5 Connecting to Power
The connection to the power supply depends on the supported hardware configuration:
Single or dual AC power – see Section 5.5.1 on page 25
DC power – see Section 5.5.2 on page 26
5.5.1 Connecting to AC Power
The device can support up to two AC power interfaces (single or dual).
Warnings:
• Units must be connected (by service personnel) to a socket-outlet with a
protective earthing connection.
• Use only the AC power cord supplied with the device.
To connect to AC power:
1. Attach one end of the 100/240 VAC power cable (supplied) to the rear AC socket.
2. Connect the other end of the power cable to an earthed AC power supply.
3. For connecting the second AC power socket (if power supply redundancy is
supported), follow steps 1 and 2, but connect this second power cable to a separate
earthed mains circuits.
Note: For dual AC power supply:
• The FAULT LED is used to indicate dual AC power. For more
information, see Section 3.3.7 on page 16.
• When both the AC power cables are connected to power, you can
disconnect one of the plugs without affecting operation.
• A UPS can be connected to either (or both) of the AC connections.
• The dual AC connections operate in a 1+1 configuration and provide
load-sharing redundancy.
• Each of the dual power cables can be connected to different AC power
phases.
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