Emerson AXP 1410, Installation And Use Manual

Page: 101 / 204

Configuring and Operating the System
AXP 1410 Installation and Use (6806800H70F)
101
5.6.2 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.
The following guidelines can assist in determining the cause of the cooling failure. Also refer to
Environmental Requirements on page 39 for important information regarding ambient
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.
For further information of nonrecoverable temperature events, refer to Chapter 7, FRU
Information and Sensor Data Records, on page 119 .
5.6.3 IPMC Circuitry
Preprogrammed FRU and SDR information reside on the FTMs and is accessible from the SAM
via the I
2
C bus. FRU information can be found in the Chapter 7, FRU Information and Sensor Data
Records, on page 119 .
5.7 Redundancy
The following sections outline the interaction between redundant shelf managers and
redundant hub blades. This interaction is not described within the
AdvancedTCA Specification
PICMG 3.0 . The following sections also describe redundancy scenarios with redundant shelf
managers and system managers.
Table 5-8 Cooling Budget
Ambient Temperature Temperature Rise
25
°
C Delta T = 20
°
C
40
°
C Delta T = 15
°
C
55
°
C Delta T = 10
°
C