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SAFESERIES Contact Extension

Relay modules with positively-driven contacts are used in safety-related applications to provide reliable feedback on the switching state of the operating contact to the control system. They enable safe diagnosis via a positively-driven NC contact and ensure the reliable exchange of signals between two systems with a feedback function. In elementary relays with positively-driven contacts, NO and NC contacts are mechanically connected to each other. This means that NO and NC contacts can never be closed at the same time, allowing a diagnostic coverage of 99% to be achieved.

PTM Published on: 2023-08-17