Hi MnMHi CSA,
Thank you for your detailed response. With the migration philosophy you mentioned, yes it was not a Mark-V to Mark-VIe migration rather a new Mark-VIe where all control system side hardware was replaced with Mark-VIe.
The system is running since the faults first appear and we cannot take it down without taking a power load debit on our facility. The system has both TRPG and TREG boards for control and protection. We checked for ground fault but found 28V supply to be healthy on all IO packs.
We have followed the below steps so far without any success:
- Unplug the <R> controller to IONET#1 Switch cable from existing port and plug it in spare port. Diagnostic alarms were not cleared.
- Unplug & Plug-in the IONET#1 cable on <R> controller. Diagnostic alarms did not clear.
- Replaced the Ethernet cable between <R> controller to IONET#1 switch but Diagnostic alarms did not clear.
- Recycled power of IONET#1 switch#1. Diagnostic alarms did not clear.
We plan to do teh following next:
- Reboot the <R> Controller by pressing the white button located at the bottom of UCSB.
- If alarms are not cleared, we will replace the IONET#1 Switch#1 and check if the diagnostic alarms are cleared though space congestion will be a big issue due to location of the switch.
- Lastly if nothing works, we will replace the processor and download the application again.
Another item to note here:
UCSB.T also noticed communication error with R pack IONET#1. However this is intermittent and restores. Fortunately both UCSB.T and UCSB.R errors have not occurred together otherwise I believe Unit could have tripped. But why is IONET#1 healthy even after power cycle? Even the cables are separate for Both R and T controllers on IONET#1 switch.
View attachment 1389
You stated that:
- Reboot the <R> Controller by pressing the white button located at the bottom of UCSB.
Are you referring to backup /restore white push button located on UCSB controller..
I strongly advise you to do correct things according to OEM technicals manual..
Please read first carefully the right manual prior to do anything
As you may perform a backup for sure...
James
James