Rockwell Automation Publication ICSTT-RM447M-EN-P - July 2019 105
Specifying a New Controller Chapter 6
Estimate Heat Dissipation
The heat in the enclosure is generated from several sources such as the power
supplies, the AADvance modules and some of the field loop power. Use the
following calculation and the data given in the tables to estimate the overall
heat dissipation:
• Power supply consumption (Watts x (100-efficacy) (%) + the sum of the
system power consumed by the modules + part of the field power that is
in the enclosure.
Table 19 - Module Supply Power Heat Dissipation
The following module power dissipation values are worst case values over the
range of operating voltages and currents.
WARNING: For AADvance modules 9110, 9801,- 9803, 9831- 9833, 9851,
9852, 9892, 9881 and 9882 a disconnect suitable for the location where they
are installed shall be provided to allow for removal of power from the fuses
before replacement.
AVERTISSEMENT: Pour les modules AADvance 9110, 9801,- 9803, 9831-
9833, 9851, 9852, 9892, 9881 et 9882, un sectionneur adapté à
l’environnement où ils sont installés devra être fourni pour couper
l’alimentation en amont des fusibles avant leur remplacement.
Item Number of
Modules
Module Power Heat
Dissipation
Subtotal
(W/BTU/hr)
T9110 Processor Module × 8.0 W (27.3 BTU/hr.) =
T9401 Digital Input Module 24 Vdc, 8 channel × 3.3 W (11.3 BTU/hr.) =
T9402 Digital Input Module 24 Vdc, 16 channel × 4.0 W (13.6 BTU/hr.) =
T9431 Analogue Input Module, 8 channel × 3.3 W (11.3 BTU/hr.) =
T9432 Analogue Input Module, 16 channel × 4.0 W (13.6 BTU/hr.) =
T9451 Digital Output Module, 24 Vdc, 8 channel × 3.0 W (10.2 BTU/hr.) =
T9482 Analogue Output Module, 8 channel, isolated × 3.6 W (12.3 BTU/hr.) =
Tot al :
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