Cooling Budget; Ipmc Circuitry - Emerson AXP640-DC2 Installation & Use Manual

4.6.2

Cooling Budget

The shelf cooling is designed to operate with the following temperature rises across the shelf.
This allows cards with these dissipations to operate with commercial grade components, 70°C
ambient temperature typical.
Table 4-2 Cooling Budget
Ambient Temperature
25°C
40°C
55°C
The following guidelines can assist in determining the cause of the cooling failure. Also refer to
Environmental Requirements on page 56
temperature requirements during servicing.
If a cooling failure occurs, the failure may be caused by a failed fan or possibly a clogged filter.
Check the filter first before replacing the FTM (see
For further information of nonrecoverable temperature events, refer to the FRU Information
chapter in the AXP640 Subsystem IPMI Programmer's Reference.
4.6.3

IPMC Circuitry

Preprogrammed FRU and SDR information reside on the FTMs and is accessible from the SAM
through the IPMB. FRU information can be found in the AXP640 Subsystem IPMI Programmer's
Reference, listed in
AXP640 Installation and Use (6806800M24E)
for important information regarding ambient
Appendix A, Related Documentation.
AXP640 Operations
Temperature Rise
Delta T = 20° C
Delta T = 15° C
Delta T = 10° C
Air Filter Maintenance on page 84).
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