Rockwell Automation: Palletizer Functional Safety with relay and configurable relay solution.

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Own­er: Doug Nix

Ver­sion: 1.0

Last Updated: 06-06-2018 10:13



Excerpt from the doc­u­ment:

This doc­u­ment has been developed for machine design­ers with­in man­u­fac­tur­ing plants and also to assist sys­tem integ­rat­ors and OEM‘s.

The spe­cific­a­tion cov­ers the imple­ment­a­tion from input devices through to final power ele­ments giv­ing examples util­iz­ing a safety relay based solu­tion and a con­fig­ur­able con­trol­ler solu­tion.

The dia­grams in this doc­u­ment should be used in con­junc­tion with the addi­tion­al recom­mend­a­tions detailed in:

  • EN 60204 – 1: Safety of Machinery – Elec­tric­al Equip­ment of Machines
  • ANSI B155.1 – Safety require­ments for pack­aging machinery (North Amer­ica ).
  • EN 415 – 4: Safety of pack­aging machines – Pal­let­izers and Depal­let­izers (Europe).

Note: Dif­fer­ent regions may have dif­fer­ent guidelines.

When imple­men­ted cor­rectly the cir­cuits described in this white­pa­per will com­ply with the require­ments for PLe (Per­form­ance Level) to (EN) ISO 13849- 1: 2015 and SIL3 (Safety Integ­rity Level) to IEC 62061: 2005.

A detailed descrip­tion of those stand­ards is provided in Safe­book 4, avail­able from Rock­well Auto­ma­tion.

For mut­ing Rock­well Auto­ma­tion provides detailed descrip­tion of the com­plete safety func­tion:

Down­load Safety Auto­ma­tion Build­er

Author: Doug Nix

Doug Nix is Managing Director and Principal Consultant at Compliance InSight Consulting, Inc. ( in Kitchener, Ontario, and is Lead Author and Senior Editor of the Machinery Safety 101 blog. Doug's work includes teaching machinery risk assessment techniques privately and through Conestoga College Institute of Technology and Advanced Learning in Kitchener, Ontario, as well as providing technical services and training programs to clients related to risk assessment, industrial machinery safety, safety-related control system integration and reliability, laser safety and regulatory conformity. For more see Doug's LinkedIn profile.