Owner's manual

CXO7489A
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Figure 17 Power supply and blower assembly components
1. Power supply
2. Status indicator
3. AC Input
connector with bail
4. Module latch (wine-colored)
5. Blower tabs (wine-colored)
6. Blower
Power supplies
The two power supplies mount in the rear of the enclosure (see Figure 27). The supplies are autoranging
andoperateonacountry-specific AC input voltage of 202 to 240 VAC ±10%, 50 to 60 Hz, ±5%, (188
to 264 VA
C, 47 to 63 Hz).
The DC outputs of this power supply are:
• +5.1 VDC for the EMU, I/O module, backplane, and disk drives
• +12.1 VD
C for the disk drives
• +12.5 VDC for the disk drives
The output of each power supply is 499 W, with a peak output of 681 W. A single power supply can
support an enclosure with a full complement of disks.
The pow
er supply circuitry provides protection against:
• Overloads
• Short circuits
• Overh
eating
Power
supply status and diagnostic information is reported to the EMU with voltage, current, and
temperature signals.
See Regulatory Notices and Specifications for the enclosure power specifications.
The power supply temperature sensor provides a temperature range signal to the EMU, which uses this
signa
l to set the blower speed.
The po
wer supply internal temperature can also control the speed of the blower. The higher the power
supp
ly temperature, the faster the speed of the blower. If the power supply temperature exceeds a preset
value, the power supply automatically shuts down.
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Enterprise Virtual Array hardware components