Continuous Motor Run & Stop status Alarms & events problem in 800xA 5.1
Dear Support Line,
we have ABB 800xA IPCS(Integrated Control and Protection System) for substation automation.
In IPCS system we have 2 substations SS9 and SS10.The IPCS system(800XA 5.1 FP4) is collecting the data from HV switch gear through IEC61850 protocol.And the LV switch gear and other devices like UPS etc are communicating through Modbus protocol.We are facing continuous alarms problem in IPCS system from last 3 months.As per the customer there was no problem sice last 4 years.The problem details are as below.
3 months back the substation 10 IPCS system lost the complete communication with switchgears.There was fault on controllers.And as per the ABB approved procedures Customer reset the both the controllers and cold download the Application program in Controller.After that the communication has become normal.But from that point of time the IPCS system is behaving peculiarly.All the stand by motor feeders in "27-P-121 "LV switch gear are showing "Run" status and "Stop" status repeatedly with random time intervals.The motor feeders numbers are "4A4,4A5,6A5,6A6,6A7,6A8,5B6,5B7,6B5,6B7,1B2,1B5,1B7,2B5,7A1,7A10,7A11,3B11 and 4B10".But these motor feeders are not actually running in the field they are stand by motor feeders.
The IPCS system is collecting the data from all motor feeders over Modbus Prtocol.We are using CI867 cards for coollecting data from switchgear feeders.Actually all the motor feeders are connected in serial loop(each loop 9 motor feeders) and there is a Serial/TCP coverter is there at switch gear end.From this converter the ethernet cable is going to IPCS panel Modbus switch. For trouble shooting I have selected a motor feeder which is generating frequent Run and Stop status in 800xA system logic.And I observed that the "Run" status is updating to "1" in 800XA logic for 2 to 3seconds,but the same bit is not updating in modscan simulator at relay side when I connected the Modscan at relay side.
That means in 800xA side only there is some mall functioning is happening to motor "Run" status bit.Its is changing to "1" for some seconds and after that changing to "0".
And from IPCS this motor feeders data we are sending to DCS over Modbus protocol.
So DCS is getting this continuous "Start" and "Stop" status alarms.This is creating lots of confusion to operator since no standby motor is running in the field but some of them sudenly showing "Run" status for some time and after that it is showing "Stop" status.
I have cold down loaded the Aplication program in controller again in SS10 controller.After that also the "Run" and "Stop" status are updating in IPCS 800xA system logic.And generating the Run and Stop events and alarms.
I observed that the controller CI867 cards are having all the gateways are having the worning "Diagnotic Retreavl error". But the other than the Run status all other signals are updating in that motor feeder correctly.I am attaching the Compact Control builder program and screen shots for your reference.
Please let me know how I can fix this continuous alarms problem.
The system details are as below
System used: ABB 800xA 5.1
Operating System: Windows Server R Standard Service pack 2 32 bit OS(see the screen shot for details)
RAM size: 4 GB