Re: [foxboro] RV: Open loop alarm

Well, I must have a day zero system (no pun intended :).  Or maybe you can 
help me out here.  I built an AOUT block to point #8 on a FBM04 with no 
wires on it.  I set BAD=1, IOMOPT=1, SCO=3.  I put the block in AUTO and 
manipulated the MEAS.  It was faithfully conditioned and passed through to 
OUT; no alarms were generated, and INITO was 0.  Is there anything else 
one has to do to get it to alarm and/or initialize on open loop?

I'll try it on a FBM237 next week when we get one hooked up.


Corey Clingo
BASF Corp.





"Johnson, Alex P (IPS)" <alex.johnson@xxxxxxxxxxxxxxxx> 
Sent by: foxboro-bounce@xxxxxxxxxxxxx
11/26/2005 11:14 AM
Please respond to
foxboro@xxxxxxxxxxxxx


To
foxboro@xxxxxxxxxxxxx
cc

Subject
Re: [foxboro] RV: Open loop alarm






If you set the SCI to the proper value (4-20ma) and set the BAD option, 
you
get the described behavior for 4-20ma signals. This has been true since 
day
one.

Regards,

Alex Johnson
Invensys Systems, Inc.
10707 Haddington
Houston, TX 77063
+1 713 722 2859 (voice)
+1 713 932 0222 (fax)
+1 713 722 2700 (switchboard)
alex.johnson@xxxxxxxxxxxxxxxx


-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] 
On
Behalf Of Corey R Clingo
Sent: Saturday, November 26, 2005 10:24 AM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] RV: Open loop alarm

On which version of I/A does this happen?  Open loops on analog outputs
are not detected on any version I've used up to 7.1/CP60, even with the
BAD option set, on legacy or 200-series FBMs.  I remember being quite
surprised at this, as it is a standard feature on the Honeywell AO blocks
I used before coming to I/A.  It would be nice to have.

Corey Clingo
BASF corp.







 
 
_______________________________________________________________________
This mailing list is neither sponsored nor endorsed by Invensys Process
Systems (formerly The Foxboro Company). Use the info you obtain here at
your own risks. Read http://www.thecassandraproject.org/disclaimer.html
 
foxboro mailing list:             http://www.freelists.org/list/foxboro
to subscribe:         mailto:foxboro-request@xxxxxxxxxxxxx?subject=join
to unsubscribe:      mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave

Other related posts: