Hi Folks
I'm very new to Mark Vie control system, and trying to study from manual and any materials. Howver, some urgent issue need your experienced to help.
I found that my gas turbine was tripped with one IO pack failure (PAIC on IONet 3)
However, this card was configured as TMR, others 2 cards are still healthy.
Alarm log indicate the set of “Inputs unhealthy on IO Module XX (All pack that connect to IONet3), T pack IONet 3 - Message Timeout [Alarm ID 1541, UCSA-0, Controller S], which seem like controller lost communication with all pack on IO pack 3.
As further check,
1. Our power supply is normal, no any ground fault or loss of power supply problem.
2. The network switches are normal, actually out network switch has been replace fron N-Tron switch regarding to TIL 1939-R1 Improved Mark VIe Network Switch Availability for 4 years ago already.
My wondering is
1. If the 1oo3 of TMR IO pack failed can it cause the unit tripped ? As my understanding that the others two should still handle the system.
2. Can the one of IO pack failure can cause the set of “Inputs unhealthy alarm" on all IO pack at the same IO net like we found. In my view it seem reasonable when network fail (from cable, switch, etc.) only, not the one IO pack fail.
3. Our MKVie have some module that is simplex IO like PRTD with single IONet , I'm not sure that if simplex IO module failured will cause unit s/d or not, or this depend on the configuration in the software. From our system, the input connect to this pack is just for alarm only, not relate to any safety function, protection function or any control sequence.
4. Finally, we faced the high failure rate of IO pack increasingly, my unit installled since 2009 which now around 12 years. I think it was not too old (but not to young also.) However, failure rate seem very high when compared at the same lifetime with other brands of control system. Not sure you guys face this problem also.
Looking forward to your replied and thanks for your help
I'm very new to Mark Vie control system, and trying to study from manual and any materials. Howver, some urgent issue need your experienced to help.
I found that my gas turbine was tripped with one IO pack failure (PAIC on IONet 3)
However, this card was configured as TMR, others 2 cards are still healthy.
Alarm log indicate the set of “Inputs unhealthy on IO Module XX (All pack that connect to IONet3), T pack IONet 3 - Message Timeout [Alarm ID 1541, UCSA-0, Controller S], which seem like controller lost communication with all pack on IO pack 3.
As further check,
1. Our power supply is normal, no any ground fault or loss of power supply problem.
2. The network switches are normal, actually out network switch has been replace fron N-Tron switch regarding to TIL 1939-R1 Improved Mark VIe Network Switch Availability for 4 years ago already.
My wondering is
1. If the 1oo3 of TMR IO pack failed can it cause the unit tripped ? As my understanding that the others two should still handle the system.
2. Can the one of IO pack failure can cause the set of “Inputs unhealthy alarm" on all IO pack at the same IO net like we found. In my view it seem reasonable when network fail (from cable, switch, etc.) only, not the one IO pack fail.
3. Our MKVie have some module that is simplex IO like PRTD with single IONet , I'm not sure that if simplex IO module failured will cause unit s/d or not, or this depend on the configuration in the software. From our system, the input connect to this pack is just for alarm only, not relate to any safety function, protection function or any control sequence.
4. Finally, we faced the high failure rate of IO pack increasingly, my unit installled since 2009 which now around 12 years. I think it was not too old (but not to young also.) However, failure rate seem very high when compared at the same lifetime with other brands of control system. Not sure you guys face this problem also.
Looking forward to your replied and thanks for your help