Dear Arcnet guru's,
we have 2 Frame 7EA's in service for about 4 years or so. Recently we have started to encounter intermittent loss of cummunication issues between the EX200 exciter and the MKVI controllers. Since the EX2000 only talks Arcnet, and the MKVI only talks Ethernet there is a UC2000 controller (MKV Controller) in the middle that is the mailman/interpretter. The problem is very intermittent and started with the first unit shortly after a normal hot gas path outage.
About a month later the 2nd unit started to do the same thing. At one point the first unit acted up long enough to get a scope on the ARCNET line and verify that traffic was not normal. Manipulating cables on the ACNA card, LDCC board, and UC2000 arcnet card resolved the problem, unfortunately not sure which "manipulation" fixed the problem. The second unit continues to error at times, never long enough to get a scope on it.
I have performed the same "manipulation" to all connectors on this unit, and replaced the coax cable as well, but still having issues. I see contemporary controls offers an Arcnet analyzer that I am considering trying, but its not cheap. Does anyone have any suggestions or recommendations? So far I have been able to do certain things, but we are online and not scheduled for a shutdown until late October, unless I trip it accidentally before then!!!!
we have 2 Frame 7EA's in service for about 4 years or so. Recently we have started to encounter intermittent loss of cummunication issues between the EX200 exciter and the MKVI controllers. Since the EX2000 only talks Arcnet, and the MKVI only talks Ethernet there is a UC2000 controller (MKV Controller) in the middle that is the mailman/interpretter. The problem is very intermittent and started with the first unit shortly after a normal hot gas path outage.
About a month later the 2nd unit started to do the same thing. At one point the first unit acted up long enough to get a scope on the ARCNET line and verify that traffic was not normal. Manipulating cables on the ACNA card, LDCC board, and UC2000 arcnet card resolved the problem, unfortunately not sure which "manipulation" fixed the problem. The second unit continues to error at times, never long enough to get a scope on it.
I have performed the same "manipulation" to all connectors on this unit, and replaced the coax cable as well, but still having issues. I see contemporary controls offers an Arcnet analyzer that I am considering trying, but its not cheap. Does anyone have any suggestions or recommendations? So far I have been able to do certain things, but we are online and not scheduled for a shutdown until late October, unless I trip it accidentally before then!!!!