Rockwell Automation T8094 8000 Series TMR System Safety Manual - Manual (Page 70)

SAFETY MANUAL
D oc N umber T8094
I ssue 27 – June 2013
Page 49 of 103
consider the localised heat generation and its impact on the overall system operating
environmental conditions.
Table 9 defines the climatic conditions for the modules within a system as a whole. It
is possible to achieve a system capable of operation in a wider range of climatic
conditions using detailed analysis of the characteristics of the system and resultant
conditions for the equipment mounted within the system.
It should be noted that the operating temperature for the equipment within any
electronic system has a significant impact on the potential operating life of that
equipment. High operating temperature and rates of temperature change significantly
reduce the operational life of any electronic device; therefore, measures should be
taken to ensuring that the operating environment remains within the recommended
range. Similarly, it is highly recommended that the periods that the equipment is
exposed to conditions outside the recommended range be minimised.
Parameter Comment Recommended Limit
Min Max Min Max
Operating
Temperature
(dry)
With natural
cooling
10 °°°° C 30 °°°° C 0 °°°° C 40 °°°° C
50 ° F 86 ° F 32 ° F 104 ° F
With forced
airflow
10 ° C 30 ° C -5 ° C 60 ° C
50 ° F 86 ° F 23 ° F 140 ° F
Storage Temperature
(dry)
10 °°°° C 30 °°°° C -25 °°°° C 70 °°°° C
50 ° F 86 ° F -13 ° F 158 ° F
Operating Humidity Non-
condensing
5%RH 95%RH
Storage Humidity Non-
condensing
5%RH 95%RH
Temperature change 0.5 °°°° C/min See
Note
1ºF/min
Table 9 - Climatic Condition Requirements
Note: Although there is no defined maximum, it is important to avoid changes of humidity
and temperature that could produce condensation. The effects of condensation on
any type of electrical equipment can result in equipment failures or improper operation.