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A special evaluator is not required, since the contact mat or HSM safety mat is composed of electro-mechanical break contacts, the signal of which can im-mediately be further processed. In addition to cost saving, any expensive connection and wiring actions are unnecessary. Valuable space is won on the crowded control panel. Further, of course, a not existing device cannot go defective.
HSM safety mat: Actuation will commence at low actuating forces and after a very short response travel, providing a fast response time. The full remaining height of the rubber profile is available as an over-travel. In particular with regard to the prevention of injuries, large over-travels are of enormous importance for a safety sensitive edge. Our safety edges are built up of mechanically opening N/C contacts connected in series, in the form of a contact chain. Current conducting contacts rollers and insulating intermediate elements (wedge rollers) are alternately lined up on an expander cord. By pretension, the contact rollers are pressed together, and the current circuit is made. Our safety mat and HSM safety mat meet the requirements of category 3 of EN 954-1 - even the sen-sor part. Double-channel design or redundancy is not necessary for this HSM safety mat - system, since the failure mode analysis made by BG has shown: a single fault does not lead to a loss of the safety function. This permits a simple construction of the system. |
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