Global Site | english

Safety-related equipment

Is it absolutely necessary for an emergency stop control device to be installed in new plants or can a "contactor version" be used?

Question: We intend to replace a control cabinet for a simple fan controller. As was customary at the time, its emergency stop function is implemented using a simple contactor, which is switched off via the emergency stop pushbutton. A contact on the contactor switches the controller off. Must an emergency stop control device be provided in the new design for the plant or can we use the same format as previously? Is it absolutely necessary for an emergency stop control device to be installed in new plants or can a "contactor version" still be used in "simple" plants?

Answer: In principle, an emergency stop function can be implemented via a pushbutton that acts directly upon a positive-guided contactor.
However, the level of this safety function is limited to one value, e.g. Performance Level c, (based on the description in the question we are assuming a 1-channel system.
If Performance Level C adequately fulfils the safety function, then it is not absolutely necessary to use a safety relay.

 

Headoffice

Pilz GmbH & Co. KG
Felix-Wankel-Straße 2
73760 Ostfildern
Germany

Telephone: +49 711 3409-0
E-Mail: pilz.gmbh@pilz.de

Technical Support

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

Americas

  • United States (toll-free): +1 877-PILZUSA (745-9872)
  • Canada: +1 888-315-PILZ (315-7459)
  • Brazil: + 55 11 4942-7028
  • Mexico: +52 55 5572 1300

Europe

  • Finland: +358 10 3224030 / +45 74436332
  • Ireland: +353 21 4804983
  • Italy: +39 0362 1826711
  • Netherlands: +31 347 320477
  • Turkey: +90 216 5775552
  • France (toll-free): +33 3 88104000
  • United Kingdom: +44 1536 462203
  • Russia: +74956654993
  • Denmark: +45 74436332
  • Austria: +43 1 7986263-444
  • Germany: +49 711 3409 444
  • Belgium: +32 9 321 75 75
  • Spain: +34 938497433
  • Sweden: +46 300 13990 / +45 74436332
  • Switzerland: +41 62 88979 30

Asia Pacific

  • Taiwan: +886 2 25681600
  • China: +86 21 60880878-216
  • Japan: +81 45 471 2281
  • Australia: +61 3 9560 0621
  • New Zealand: +64 9 6345350
  • South Korea: +82 31 778 3390