B&R Industries Automation PC 620, User Manual

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Standards and Certifications • Climate conditions
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369 Automation PC 620 User's Manual V 1.90
6.4 Large temperature fluctuations
6.5 Temperature fluctuations in operation
6.6 Humid heat, cyclical
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 271: 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 an
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 272: Test requirements - temperature fluctuations in 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 273: 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 274: Test requirements - humid heat, constant (storage)