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Safety-related equipment

May the "safe" signal from a Pilz evaluation device be directed to a PLC (LOGO) in order to enable operations there or must there be another contact after the PLC?

As the PLC (LOGO) is a controller without safety-related properties - it can also be said that the standard PLC is "not a well-tried component" - it may not be connected downstream of the safety relay (e.g. PNOZ). In this type of circuit, the safe signal loses its reliability after the PLC.

 

Contact

Pilz Skandinavien K/S Safe Automation
Nuijamiestentie 7
00400 Helsinki
Finland

Telephone: +358 10 3224030
E-Mail: pilz.fi@pilz.dk

Technical Support

Telephone: +49 711 3409 444
E-Mail: support@pilz.com