tag:blogger.com,1999:blog-9117652638099818955.post5474233542749717218..comments2023-11-25T16:44:59.793+11:00Comments on THINK SAFETY, TALK SAFETY: How do I validate my Safety System?NHP Electricalhttp://www.blogger.com/profile/13916507297423357875noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-9117652638099818955.post-54612615714661979752017-06-28T09:57:05.206+10:002017-06-28T09:57:05.206+10:00The Schneider Altivar manual shows examples of how...The Schneider Altivar manual shows examples of how believe they meet Category 3. It is more to do with the Stop input circuit having dual channels. They only use one output channel from the Safety Relay to drop one input to the Drive. While it doesn't look like a typical Cat 3 circuit, they have had it certified to SIL2 CAT3. (See link below). This perhaps is one of those cases where you use Justiin Wild justinw@vklogic.com.aunoreply@blogger.comtag:blogger.com,1999:blog-9117652638099818955.post-41105950292466863062017-05-19T06:19:34.852+10:002017-05-19T06:19:34.852+10:00I am in the middle of a discussion regarding EDM o...I am in the middle of a discussion regarding EDM on a Schneider Altivar 61 VSD. The safety function is trying to achieve CAT 3 with one drive as the actuator. Although the discussion is more around the need of EDM, may other concern is how is this CAT 3 if there is only one drive as the actuator? Could you please make any comments as the need for EDM on a safety function using one drive as the Anonymoushttps://www.blogger.com/profile/03495316143609395500noreply@blogger.com