ronv5300
Member
Recently we had a process trip on compressors. When investigating I found three of six redundant pairs with DISQ status. Note these systems are in separate UCP's with redundant power, networks etc.
Fault finding included replacing the Fiber Links between redundancy Modules, and restarting controllers one by one, to ensure Primary is up when secondary is started. No success.
System has been online since 2016 and no recent hard or software changes were made?
Any ideas why I cannot clear the DISQ status?
Fault finding included replacing the Fiber Links between redundancy Modules, and restarting controllers one by one, to ensure Primary is up when secondary is started. No success.
System has been online since 2016 and no recent hard or software changes were made?
Any ideas why I cannot clear the DISQ status?