ABB S800 I/O User Manual page 35

analog outputs. Please refer to
information.
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The temperature within cabinets and in the surrounding environment and
atmosphere must be considered, especially when using sealed cabinets (IP65/IP54)
or tropicalized cabinets (IP41) with considerable equipment and outside ambient
temperatures at levels approaching 40°C (104°F). The frequency of faults is
estimated to double for each 20° C (36°F) increase in temperature. Thus, it is
important to maintain as low ambient temperature outside the cabinets (typical
operating range 10 - 40°C (50 - 104°F)) as possible where the equipment is
installed.
Permitted in
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The cabinets are to be located on a stable floor, wall, deck or supporting structure,
free from vibrations.
If the system equipment is installed in a control room adjacent to large machinery
such as shakers or large presses, where frequent major vibrations occur, shock
absorbers or an isolation pad may be required to protect the system equipment.
Shock absorbers normally protect the equipment from sustained low level vibrations
(vibrations that are perceptible, but not excessive). If vibrations or shock is a major
problem, more extreme measures must be considered to alleviate the problem, such
as fasten the MTUs with extra screws.
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Grounding, cable selection and cable routing must be considered for
electromagnetic interference-free operation. Planning considerations are discussed
in the following sections. Instructions for implementing these plans are provided in
Section 2.2, Installation
The S800 I/O meets requirements specified in EMC Directive 89/336/EEC.
You should request CE marking and compliance when ordering the equipment.
For more information about environmental immunity, including EMC qualities with
or without CE marking, refer to the
sheet.
3BSE 020 923R101
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Design considerations are given in
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Cabinets.
Procedures.
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Section 3.1.8, Power and Cooling
Section 3.1.4.2, Heat Dissipation
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for more
data
25