Standards And Approvals - Siemens SINUMERIK 840D sl Equipment Manual

Guidelines
If the convection area A [m
then use:
• "Heat dissipation using natural convection and internal turbulence" for hot spots and heat
concentrations in housings subject to space constraints. The total power loss P
thermally critical applications can be determined as follows:
– Current measurement for a 24 V supply voltage
– Power loss P
• Heat dissipation using open-circuit ventilation
4.1.3

Standards and approvals

Approvals
CE approval
Figure 4-2
The operator panels and the safety-relevant accessories satisfy the requirements and
protection objectives of the following EC directives. The operator panels and the safety-
relevant accessories comply with the harmonized European standards (EN), promulgated in
the Official Journals of the European Community:
• 2014/30/EU "Electromagnetic Compatibility" (EMC Directive)
• Directive 2006/42/EC of the European Parliament and Council of May 17, 2006, on
machinery, and Directive 95/16/EC (amendment)
SIBE Switzerland Certification Service
For the HT 2 and HT 8 units.
Figure 4-3
HT 8
The HT 8 operator panel and the safety-relevant accessories (is identified in the "Accessories"
section for the respective devices) satisfy Category 3, PL d according to EN ISO 13849-1:2015.
Handheld Terminal HT 8
Equipment Manual, 02/2024, A5E52918633B AA
] does not suffice for the "heat dissipation using natural convection",
2
[W] = U (24 V) * |measured value in ampères|
Ltot
CE marking
Symbol of the certifying body
General information and networking
4.1 Application planning
for
Ltot
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