Standards and certifications • Climate conditions
Section 5
Standards and
certifications
401Automation PC 620 with 945GME N270 CPU board User's Manual V 1.10
6.4 Large temperature fluctuations
6.5 Temperature fluctuations in operation
6.6 Humid heat, cyclic
6.7 Humid heat, constant (storage)
Test carried out according to
EN 60068-2-14
Limits according to
EN 61131-2
Large temperature fluctuations 3 hours at -40°C and 3 hours at
+70°C, 2 cycles, then 2 hours
acclimatization and function
testing, duration approximately
14 hours
Table 262: Test requirements - Large temperature fluctuations
Test carried out according to
EN 60068-2-14
Limits according to
EN 61131-2
Open devices: These can also
have a housing and are installed in
switching cabinets
3 hours at +5°C and 3 hours at
55°C, 5 cycles, temperature
gradient 3°C / min, the unit is
occasionally supplied with voltage
during testing, duration
approximately 30 hours
Closed devices: These are devices
whose data sheet specifies a
surrounding housing (enclosure)
with the corresponding safety
precautions
3 hours at +5°C and
3 hours at +55°C, 5 cycles,
temperature gradient 3°C / min,
the unit is occasionally supplied
with voltage during testing,
duration approximately 30 hours
Table 263: Test requirements - Temperature fluctuations during operation
Test carried out according to
EN 60068-2-30
Limits according to
EN 61131-2
Alternating climate 24 hours at +25°C / +55°C and
97% / 83% RH, 2 cycles, then
2 hours acclimatization, function
testing and insulation, duration
approximately 50 hours
Table 264: Test requirements - Humid heat, cyclic
Test carried out according to
EN 60068-2-3
Limits according to
EN 61131-2
Humid heat, constant (storage) 48 hours at +40°C and 92.5% RH,
then insulation test within 3 hours,
duration approximately 49 hours
Table 265: Test requirements - Humid heat, constant (storage)
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