Rockwell Automation Publication ICSTT-RM448M-EN-P - February 2021 63
Chapter 4 Before You Begin
Field Power Consumption
To estimate overall controller power dissipation it is necessary to include the
field power component dissipated within the controller. Refer to the table
"Field Loop Power Heat Dissipation". The field power requirements should be
calculated separately and is dependent on the number and type of field
elements. Refer to the specifications for the Digital and Analogue output
modules for details of the channel output electrical specifications.
System Design
Considerations for Heat
Dissipation and Cooling
The controller is designed to operate in its specified environment without
forced air cooling. However, forced air cooling may be needed in individual
circumstances when the controller shares its enclosure with other heat
producing equipment and the internal temperature could exceed the
recommended operating temperature range.
Module Orientation
Rockwell only recommend that modules are oriented vertically, if modules are
mounted in any other orientation then specific temperature tests must be
done to achieve reliable and predictable operation.
Maximum Air Temperature
The maximum air temperature rating in an enclosure where AADvance
modules are installed to support predictable operation is 70 °C (158 ° F).
Table 6 - Module Supply Power Consumption
Item
Number of
Modules
Power Consumption Subtotal
T9110 Processor Module × 8.0 W =
T9401 Digital Input Module 24 Vdc, 8 channel × 3.3 W =
T9402 Digital Input Module 24 Vdc, 16 channel × 4.0 W =
T9431 Analogue Input Module, 8 channel × 3.3 W =
T9432 Analogue Input Module, 16 channel × 4.0 W =
T9451 Digital Output Module, 24 Vdc, 8 channel × 3.0 W =
T9482 Analogue Output Module, 8 channel, isolated × 3.6 W =
Total:
IMPORTANT
The above figures are worst case values calculated from the
range of operating voltages and currents. If your system is
required to meet UL/CSA standards the power consumption and
the corresponding electrical ratings must not exceed the
maximum electrical ratings given in the table included in the
topic "Backplane Electrical Ratings".
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