Siemens SIMATIC S7-400 Configuration And Use Manual page 110

Standards, Certificates and Approvals
Marine Type Approval
Classification organizations:
• ABS (American Bureau of Shipping)
• BV (Bureau Veritas)
• DNV (Det Norske Veritas)
• GL (Germanischer Lloyd)
• LRS (Lloyds Register of Shipping)
• Class NK (Nippon Kaiji Kyokai)
Safety Requirements for Installation
The S7-400 automation systems are "open type" equipment according to the
IEC 61131-2 standard and therefore adhere to the EU directive 73/23/EEC
"Low-Voltage Directive" and are UL/CSA certified as such.
To fulfill requirements for safe operation with regard to mechanical stability, flame
retardence, stability, and shock-hazard protection, the following alternative types of
installation are specified:
• Installation in a suitable cabinet
• Installation in a suitable enclosure
• Installation in a suitably equipped, enclosed operating area
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Automation System S7-400 Configuration and Use
A5E00442711-02