IBM SAN512B-6, Installation, Service And User Manual

Page: 190 / 286

Table 21. HVAC/HVDC power cable wiring
Label (color) Function
(black) Negative (-)
(green with yellow stripe) Earth ground (PE)
(red) Return positive (+)
Power cords have an Anderson Saf-D-Grid
®
400 connector on the power supply
end and unterminated wires on the other end for attaching to AC or DC power
sources. Attach either an AC power plug to these wires that meets your facility
and local code requirements or connect wires to appropriate DC power terminal
blocks.
Precautions specific to power supply assembly
Observe the following precautions when replacing the power supply assembly.
Note: Depending on the blade configuration of the device and the number of
power supplies installed, the device may be able to continue operating while
replacing a power supply. Refer to "Power Supply Requirements" in Appendix B,
“Product specifications,” on page 235 for minimum power supplies required for
AC low and high voltage line operation, redundancy in case of power supply
failure, and other specifications. If there is insufficient power, the device will start
powering down blades until the power demand can be met.
Note: A device with slots for eight port blades can have up to four power
supplies installed. If you are adding additional power supplies, you can use the
procedures in this section under “Installing a power supply” on page 169 to install
the new power supplies. Be sure to follow steps on those procedures to enable
sending notifications if the additional power supplies should fail.
Note:
Make sure that captive screws securing power supply assemblies to chassis
are tightened. If not, high pressure from fans operation may unseat power supply
assemblies from chassis connectors.
Refer to “Safety precautions” on page 7 for caution and danger notices related to
installing power supplies.
Power supply assembly fault indicators
Use one of the following methods to determine if a power supply is faulty:
v Check the power supply status LED.
– The LED may take up to 10 seconds to illuminate. If LED does not illuminate,
the power supply has no incoming power. Check if power supply is properly
seated in backplane connector. Check power source to power cord.
– If LED is flashing green, the power supply may be faulty.
For more information on LED operation, refer to“Interpreting power supply
LEDs” on page 79.
v Enter psShow . If status of power supply displays absent or faulty, check if power
supply assembly is seated in chassis. If it is, power supply could be faulty.
v Enter
sensorShow
to determine if a power supply is running above average
temperatures of other installed power supplies.
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SAN512B-6 Installation, Service, and User Guide
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