Audible Alarm Not Silencing
We are running AC450 controllers with a 800xA 5.1 FP4 system.
We've had an ongoing problem with a particular workstation not being able to silence a process alarm. The Operator can acknowledge the alarm but occassionaly the sound will continue, with no alarm on the Alarm List. We've restarted the Workplace & Workstation and recently replaced the station with a spare. The other stations using the same AS & CS (via Load Balancing) do not share the same issue.
Has anyone else experienced this?
Any guidance would be appreciated.
What version are you at, exactly?
- 5.1 FP4 (RevC)
- 5.1 FP4 RevD
- 5.1 FP4 RevE
The System Software Revision document on ABB Library list exact names and build numbers.
Each of these above revisions have several rollups.
On top of these rollups, you may have a temporary correction or two.
The release notes for each version, eg available on ABB Library indicate corrections made in the area. If you are at an earlier version, I suggest reading release notes and consider upgrade before performing any deeper fault tracing.