Siemens SIMATIC ET 200AL - Page 93

Technical specifications
10.4 Mechanical and climatic ambient conditions
Distributed I/O system
System Manual, 02/2018, A5E31861578-AF
91
10.4
Mechanical and climatic ambient conditions
Operating conditions
The ET 200AL distributed I/O system is suitable for use in weather-proof, fixed locations.
The conditions of use exceed the requirements pursuant to IEC 60721-3-3:
● Class 3M3 (mechanical requirements)
● Class 3K3 (climatic requirements)
Mechanical ambient conditions
The following table shows the mechanical ambient conditions, listed in sinusoid vibrations.
Table 10- 7 Mechanical ambient conditions
Frequency band
Tested
5 ≤ f ≤ 8 Hz
15 mm amplitude
8 ≤ f ≤ 150 Hz 10 g constant acceleration
Tests of mechanical ambient conditions
The following table shows the type and scope of the tests on mechanical ambient conditions.
Table 10- 8 Tests of mechanical ambient conditions
Condition tested
Test standard
Values
Vibrations Vibration test
according to
IEC 60068-2-6.
Type of oscillation: Frequency sweeps with a rate of change of
1 octave/minute.
5 to 9.1 Hz, constant amplitude 15 mm
9.1 Hz to 150 Hz, constant acceleration 10 g
Duration of oscillation: 10 frequency sweeps per axis at each of
three vertically aligned axes
Shock Shock, tested
according to
IEC 60068-2-27
Type of shock: Half-sine
Shock intensity: 30 g peak value, 18 ms duration
Direction of shock: 3 shocks each in ± direction in each of the 3
axes vertical to one another
Climatic ambient conditions
The following table shows the type and scope of the tests on climatic ambient conditions.
Table 10- 9 Climatic ambient conditions
Ambient conditions
Fields of application
Comments
Temperature
-25 °C to 55 °C
All installation positions
Temperature variation
10 K/h
-
Relative humidity
From 5 to 100%
With condensation
Barometric pressure from 1140 hPa to 795 hPa Corresponds to a height of -
1000 to 2000 m
Concentration of pollutants ANSI/ISA-71.04 severity level G1;
G2; G3
-