Siemens SINUMERIK 840D sl Manual page 84

Technical specifications
7.3 Ambient climatic and mechanical conditions
Convection surface area A [m
The surface areas of the front and bottom sides are not included in the convection surface area
calculation.
Note
A recommended value for the power loss of the operator control components is contained in the
"Technical data" section of the associated component (see "Power consumption").
Means of heat dissipation
Heat dissipation can take place as follows:
● Heat dissipation by natural convection
● Heat dissipation by natural convection and internal air turbulence
● Heat dissipation by open-circuit cooling
● Heat dissipation by open-circuit ventilation
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Operator panel front: OP 012
Manual, 05/2019, A5E36371591B AB