03.06
2.2 Climatic and mechanical environmental conditions
2-28
© Siemens AG, 2006. All rights reserved
SINUMERIK 840D Configuring Manual NCU (PHD) – 03.06 Edition
Table 2-5 Test limits for mechanical environmental conditions
Vibration
Frequency range 10 to 58 Hz
to EN 60068–2–6
Constant deflection 0.075 mm
Acceleration amplitude 58 to 200 Hz: 1g
Shock resistance
Acceleration 5g
to EN 60068–2–27
Duration of nominal shock 30 ms
Number of nominal shocks 18 shocks
Shock form Half-sine
g 9.81 m/s
2
(acceleration
due
to
gravity)
Degree of severity 3C2 as per EN 60721–3–3
When working in areas where gases, dust and oils may be hazardous to func-
tionality, the controller must be operated in a control cabinet with a heat exchan-
ger or with suitable supply air.
Maximum permissible dust contents in the air circulating in the cabinet:
– Suspended solids 0.2 mg/m
3
– Deposits 1.5 mg/m
2
/h
Note
The dust precipitate must be removed at appropriate time intervals.
Relevant standards: EN 61000–6–3 and –4
Table 2-6 Limit values for radio interference in industrial environments
Limit class as per EN 61000–6–4
Conducted radio interference A (industry)
Interference radiation A (industry)
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.
If compliance with limit class B (residential areas) is required, please contact
your local Siemens office or sales representative.
Mechanical
environmental
conditions
Gases that can
adversely affect
the function
Dust that can
adversely
affect the function
Radio interference
2 Connection Conditions
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