Application planning
3.3 Ambient and environmental conditions
SIMATIC Rack PC 840 V2
Getting Started, Edition 04/2004, A5E00248069-02
3-3
3.3 Ambient and environmental conditions
When you plan your project, you should make allowances for:
• Note the climatic and mechanical environmental conditions specified in the technical data
in your operating manual.
• Avoid extreme ambient conditions as much as possible. Protect your PC from dust,
moisture, and heat.
• Keep the PC out of direct sunlight.
• Mount the PC as safely as possible to prevent danger (for example, of falling over).
• The device meets the the degree of protection IP 41 at the front panel. In an environment
wit the risk of splash water, ensure that the mounting cut-out for the Rack PC 840 V2 is
protected against the ingress of splash water.
• The clearance in the area of the ventilation slots must be at least 50 mm, so that the PC
is sufficiently ventilated.
• The ventiducts of the enclosure may not be covered.
• The device enclosure satisfies fire protection requirements to EN 60950. It may therefore
be installed without additional fire-proofing measures.
Warning
If these conditions are not satisfied when the system is being installed, the UL 60950,
EN 60950 approvals will be no longer recognized and there will be danger of overheating
and danger to personnel!
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