Pepperl+Fuchs Blog

How to Replace an AS-Interface Safety Module

Posted by Helge Hornis on Tue, Oct 02, 2012

A step-by-step video

Every week I find myself helping customers getting their AS-Interface Safety at Work systems up and running.  Some of those calls are concerned with new, first-time installations while others deal with installations that have been in operation for nearly 10 years. And since AS-Interface is an open, multi-vendor technology and Safety at Work (its safety technology) is supported by many competing companies, these conversations are not limited to setups using Pepperl+Fuchs' hardware exclusively.

The AS-Interface Safety Monitor

The idea of jointly developing a new cutting-edge technology is best embodied by the first-generation AS-Interface Safety Monitor. This device continues to be offered by every member of the safety consortium and has been used in thousands of installations worldwide. The only difference between these first-generation Safety Monitors offered from  Allen-Bradley GuardMaster, Bihl+Wiedemann, Euchner, Festo, idec, ifm, Leuze, Pepperl+Fuchs, Schmersal, Schneider Electric, Sick, and Siemens is the color of their housings and the model name used by the various companies. This is, of course, great news for users because I can help them no matter where they initially purchased their safety system.  

AS-Interface safe input devices

When you look at the large selection of safe input devices, you may conclude that the situation is very different here and you can get help only from your initial supplier. 

Fortunately, this is not the case. While each supplier develops safety devices according to its preferred 'look and feel', the way it addresses different safety needs, satisfies different IP ratings, or the way the units are mounted, their fundamental operations are 100% identical. And this brings me to the reason for this video.  

How to replace a safety module

AS-Interface is an exceptionally reliable technology, and consequently, maintenance personnel may not even recall how to replace a failed AS-Interface safety module. Plus, there is this myth that advanced tools, perhaps even a PC is needed to perform this operation. Some even claim the original safety configuration is needed and that, after exchanging the failed module for the new safety module, it must be downloaded again into the Safety Monitor. Nothing could be further from the truth. The reality is that any safety module (from any manufacturer) can be replaced easily, quickly, and without a PC. If you are using a Safety Monitor from any supplier, watch our video; link to it so your maintenance personnel has access to it whenever necessary.

Topics: Troubleshooting, AS-Interface

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