Environmental conditions Application areas Remarks
Biological, chemical and mechanical influences, pollutants
Biological environmental conditions Class 3B1 according to EN 60 721-3-3:
Mold, mold growth, slime, rodents, termite
and other animal vermin are not permissible.
Chemically active environmental conditions Class 3C1 according to EN 60721‑3‑3
Mechanically active environmental conditions Class 3S1 according to EN 60721‑3‑3:
Conductive dust not permissible.
Classification of the mechanical
environment
3M3 for components on the machine
3M1/3M2 for components in the control cab‐
inet
Degree of contamination 2
EMC conducted / radiation Class C3 according to EN 61800-3
Note
The user must consider radio interference for the complete system. Particular attention should
be paid to cabling. Please contact your sales representative for assistance and support.
If compliance with limit value class C2 is required, please contact your local sales
representative.
1.2.2.3 Cooling
To calculate the heat dissipation, the total power loss P
Vtotal
of all heat-generating components
in a housing must be taken into account.
Total power loss P
Vtotal
= P
V1
+ P
V2
+ P
V3
+... [W]
Convection surface area A [m
2
]:
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
General information and networking
1.2 Application planning
Operator panel front: OP 012
Manual, 09/2016, A5E36371591B 17
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