Application Planning
4.3 Ambient and environmental conditions
SIMATIC Rack PC 840 V2
Operating Instructions, Edition 05/2006, A5E00248055-04
4-3
4.3 4.3 Ambient and environmental conditions
When you plan your project, you should make allowances for:
• Note the climatic and mechanical environmental conditions specified in the specifications
provided by your operating manual.
• Avoid extreme ambient conditions as far 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 satisfies protection class IP 41 on the front panel. In areas where splashing is
likely, ensure that the device's installation opening is splash-proofed.
• The area around the ventilation slots must be at least 50 mm, in order that the PC is
sufficiently ventilated.
• Do not cover the device's vent slots.
• The device fulfils the requirements for a fire enclosure according to EN 60950-1. It can be
installed without additional fire protection.
Warning
If these requirements are not adhered to when installing the system, the approvals
according to UL 60950-1, EN 60950-1 are voided and there will is a danger of
overheating and a hazard for personnel!
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