Re: [foxboro] FBM Letterbugs
- From: terry.lloyd@xxxxxxxxxxxxxx
- To: foxboro@xxxxxxxxxxxxx
- Date: Thu, 13 Mar 2003 10:23:52 -0500
Did those letterbugs contain the number 5 by any chance ?
We have had a large number of failures identified during the commissioning
of a project, about 20-30 letterbugs where changed because the legs of the
number 5's were too short. This was raised with Foxboro at the time.
Since then we get occasional failures occurring in other locations around
the site, if the letterbug contains a 5 we change it for a newer one.
Regards, Terry
-----Original Message-----
From: James Kahlden [mailto:James.Kahlden@xxxxxxxx]
Sent: Thursday, March 13, 2003 2:51 PM
To: foxboro@xxxxxxxxxxxxx
Subject: [foxboro] FBM Letterbugs
We have had several failures recently of legacy FBMs of different types.
They fail red/green and the message is loss of communication. We found that
in almost all cases, that the FBM letterbug needed to be reseated or
replaced to get the FBM to work again. These FBMs have been in service for
6 to 7 years. These FBMS are installed in 1X8 FBM racks inside Rittal
cabinets in an air conditioned environment. During our recent outage we
checked the nosecone and letterbug of all of our FBMs. While pushing on the
letterbug we had 12 FBM's (out of about 400) reboot. Have any others on
the list experienced this? If so, what have you done to correct it?
Thanks,
Jim Kahlden
jkahlden@xxxxxxxx
Lower Colorado River Authority
Fayette Power Project
6549 Power Plant Road
La Grange, TX 78945
(979) 249-8514 (Ph)
(979) 249-8390 (Fax)
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