Dear all, During the Commissioning we have been facing the subjected issue in all DCS controller. Which is in the cluster one all redundant card got faulty and this is happening in other 3 DCS controllers. If the same controller having other 3 more cluster those are healthy and only problem happening in CL1. Before powered on we have checked the Earthing , firmware version and the the profibus cable.
Find the attachment. Please explain what could be reason to have such a similar problem in all DCS controllers.