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.