Safe monitoring of underspeed
The speed monitor DU110S has been developed for safety-related minimum-speed monitoring required, for example, for slip or V-belt monitoring.
An application example is the industrial thermoprocessing equipment according to EN 746-2. In this case, safety-related monitoring of the air exchange is required. To do so, monitoring is done via the rotational speed monitoring of the fans.
The speed monitor is certified to EN 62061 / SIL 3 and EN ISO 13849-1 cat. 4 / PL e – even though non-safetyrelated sensors are used as pulse pick-ups. When the safety output has been triggered, it can be reset again manually or automatically.