[ RadSafe ] Interlock question

roger.bryant at hubersuhner.com roger.bryant at hubersuhner.com
Tue Oct 28 10:49:51 CDT 2014

European Standard EN 60204-1997 prohibited programmable electronic equipment for category 0 (all power off)emergency stop functions) . Subsequently various programmable safety systems and bus systems have been approved and can be used.
There are quite stringent assessment requirements for these systems to ensure that they meet the required Safety Integrity Level (SIL). A lot of these systems include continuous dynamic testing. See EN 60518.

There is a lot of literature available from the various suppliers:



Allen Bradley Guardmaster

Best regards

Roger Bryant
CH-8330 Pfaeffikon, Switzerland
LF Low Frequency Division
Prozess Techniker
roger.bryant at hubersuhner.com<mailto:roger.bryant at hubersuhner.com>
+41 44 952 2193 phone

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