Crane system, especially container crane, has second controller for monitoring first controller, making own control intervention if safety-relevant control intervention by first controller inadequate

摘要

The system has a first memory programmable controller for outputting signals leading to a required safety-relevant control access to one or more operating elements and a second controller for at least partly monitoring the control operation of the first controller based on safety-relevant signals and making its own control intervention to an operating element in the event of an inadequate control intervention on the part of the first controller. The system has a first memory programmable controller (10) for outputting signals leading to a required safety-relevant control intervention to one or more electrical or electromechanical operating elements and a second memory programmable controller (11) for at least partly monitoring the control operation of the first controller based on safety-relevant signals (E) and making its own control intervention to an operating element in the event of an inadequate control intervention on the part of the first controller.