Test rigs for laboratory use are typically equipped with a PLc rated safety system. This is upgraded to PLd for systems requiring frequent operator interaction. Systems used in production environments usually come with a PLe rating.
Safety systems are implemented either by PILZ safety relays or a safety SPS. The second option is used for sophisticated systems with numerous input signals and advanced assessment algorithms. Safety systems comprise various mechanical, hydraulic and electric safety features, including a safety fence, safety manifold, e-stop button, emergency lock and others.
As an important part of every test rig, INOVA safety systems are carefully designed by engineers based on a comprehensive risk analysis accounting for all safety relevant factors, including the intended use. The risk analysis and declaration of conformity are provided with all INOVA test rigs.