Siemens SINUMERIK ONE PPU 1740 Series Equipment Manual page 48

Application planning
4.3 Climatic and mechanical environmental conditions
Parameters
Moisture condensation and ice formation
Dripping water, spray, splash water, water jets
Supply air
Air pressure
Derating
Active environmental conditions
EMC limit value
Type of enclosure
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
Deposits
Limit values for radio interference suppression in industrial environments
Conducted radio interference
Radio interference
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.
48
Values
Not permissible
Permissible
Without aggressive gases, dusts and oils
106 ... 92 kPa or
0 ... 1000 m above sea level
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.
Chemical: Mechanical:
Class 3C2 Class 3M1
Category: C2
rear: open type,
front: enclosure type.
0.2 mg/m
3
1.5 mg/m h
2
Limit class according to EN 61800-3
C3
C3
Equipment Manual, 01/2019, A5E47615272B AA
Biological:
Class 3B1
PPU 1740