we have fram 5 and mark 6.

in a HMI its so many alarms appearing at one time and after esetting that unit tripped because of this alarms.

and i am new operators so please help about this matter, the reason why. if some body know so please give me hints and i will appreciate for u reply . alarms is following

N <R> SLOT4 VAIC DIAGNOSTIC ALRM
N <K> VPRO DIAGNOSTIC ALARM
N <R> SLOT VCN8 DIAGNOSTIC
N BATTERY 125VDC GROUN ALARM
N EXHAUST TC CARD COMMUNICATIONS FAULT
N VCMI IO STATE EXCHANGE FOR <R> FAILED
N DE POWER SUPPLY UNDERVOLTAGE ALARM
N <T> SLOT VCM1 DIAGNOSTIC ALARM
N COMPRESSOR INLTE THERMOCOUPLE DISAGREE

SO PLEASE I WILL BE WAIT FOR U R RESPONSE

 

You have a Frame 5 and a Mark <b>VI</b>.

There's too little information here to be able to say for certain why the unit tripped. We would need to be able to see all of the alarms, Process and Diagnostic, that were existing before the event and after the event. We would also need to know what else was happening at the time of the event (electrical storm; heavy rain storm; frequency disturbance; etc.).

But, I'm going to go out on a very strong limb here and say that there was a very serious 125 VDC battery ground, likely more than one, and the 125 VDC supply dipped below approximately 90 VDC and/or there were actually grounds simultaneously on both legs of the DC supply somewhere.

Again, entirely too little information about what the condition of the control system was prior to the event, what was happening at approximately the same time as the trip occurred, the sequence of alarms (Process and Diagnostic), and what the current condition of the control system and 125 VDC supply is.