Parameters Values
Moisture condensation and ice formation Not permissible
Dripping water, spray, splash water, water jets Permissible
Supply air Without aggressive gases, dusts and oils
Air pressure 106 ... 92 kPa or
0 ... 1000 m above sea level
Derating At altitudes over 1,000 to 4,000 m above sea level, the
upper temperature limit must be reduced by 3.5 °C /
500 m.
Active environmental conditions Chemical:
Class 3C2
Mechanical:
Class 3M1
Biological:
Class 3B1
EMC limit value Category: C2
Type of enclosure rear: open type,
front: enclosure type.
Note
You must consider the 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 Siemens sales
partner.
Function-impairing dust
When working in areas where gases, dust and oils may be hazardous to functionality, the
control system must be operated in an enclosure with a heat exchanger or with suitable supply
air. Dust deposits must be removed at regular intervals.
Maximum permissible amount of dust in the ambient air:
Suspended component 0.2 mg/m
3
Deposits 1.5 mg/m
2
h
Limit values for radio interference suppression in industrial environments
Limit class according to EN 61800-3
Conducted radio interference C3
Radio interference C3
Note
The user must consider interference radiation for the complete system. Particular attention
should be paid to cabling. Please contact your sales representative for assistance and support.
Application planning
4.3 Climatic and mechanical environmental conditions
PPU 1740
48 Equipment Manual, 01/2019, A5E47615272B AA
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