Re: [foxboro] Migration -- FCP vs. ZCP?
- From: "Goldie, Shaun S" <Shaun.Goldie@xxxxxxxxxxxxxxxxxx>
- To: <foxboro@xxxxxxxxxxxxx>
- Date: Wed, 8 Mar 2006 10:30:23 +1300
Ted
just an opinion
use SOTD (Standard of the Day)you are bound to end up with both types
as the size of the logical process unit is the likley driver
another area to consider is the new gateway FBM's bringing your foreign
devices (PLC's...) in below the CP rather than into their own station
(gateway)this makes sense from a control and distribution point of view
but makes the FCP's 2MB fieldbuss a bit of a bottleneck when compared to
the ZCP's multiple fieldbuss capability
a con for the FCP is you have to provide DC power and you probably would
choose seperate power to the base plate power
in my plant I am running CP60's each with 30 200 series FBM's spread
over 5 base plates the CP's are not working very hard yet i am sitting
at the FCP I/O limit
in a nutshell the FCP's are my preference but my process will probably
dictate ZCP
on another note, all you UNIX users (and I am one) the reference to a
P91 Host, check out PSS 21H-4U6 B4 and 21S-1B10 B3 the windoze version
of IA has come a long way (on paper)
Shaun
NZ Steel
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx
[mailto:foxboro-bounce@xxxxxxxxxxxxx]On Behalf Of Johnson, Theodore
(Ted) S
Sent: Wednesday, 8 March 2006 09:22
To: foxboro@xxxxxxxxxxxxx
Subject: [foxboro] Migration -- FCP vs. ZCP?=20
Hello everyone,
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At our refinery we have been incrementally upgrading our relatively
small 2 node I/A system as time/money/justification/projects/outages
have allowed. In the last 2 years we have gone from v4.3 -> v7.1, 51B
-> F, Legacy historian -> AIM*, CP30/40 -> CP60 (recently installed 200
series FBMs connected via FCM10s and fiber hubs), and soon DM ->
FoxView. Next month we will be replacing our Carrierband LAN Interface
modules with ATS and P91 (as boot host) and installing ethernet switch
pairs in strategic locations. Therefore, soon we will have the basic
Mesh infrastructure to build upon and migrate to over time. [At our
next major outage opportunity (Turnaround 2009), we will consider adding
the Solaris machines on the MESH or converting to Windows machines on
the MESH, cp60 ->270, ICC -> IACC or?, etc...] The discussion we are
having now is whether we should continue to install/upgrade centrally
located CPs (ZCP270s) or migrate towards using remote mounted CPs in the
field (i.e. FCP270s).
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In addition to future upgrade considerations (2009), we have a more
immediate new capital/expansion project (2007 start-up), the timing of
which makes sense to install 270 controllers. The scope is adding 4 I/O
cabinets in 3 different areas (requiring 4 pairs of FCPs or 2 pairs of
ZCP w/FCM100). Besides purchase price, there are other considerations
such as future CP upgrades (ability to combine/remove CPs), number of
FBMs supported, peer-to-peer connections, engineering/maintenance
training, spare parts, etc. [Note: currently 270s will support either
100 or 200 series I/O, but at some point in the near future they'll be
able to support both types of FBMs at the same time.] At this time the
project team is leaning towards using FCPs. =20
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Thinking more long term (depending on new project decision and future
CP60 -> 270 upgrade path) we could eventually end up with either:
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a) All ZCPs - Use ZCP on new project and upgrade existing CP60s to
ZCP270s (in existing I/O cabinets change FCMs from 10 to 100),=20
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b) All FCP - Use FCP on new project and upgrade existing CP60 to
FCP270s (use same fiber between control room and I/O cabinet but change
FCM10/baseplate to FCP/baseplate); or
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c) Mixed FCP/ZCP architecture - Use FCP on new projects and/or ZCP
on future upgrades.=20
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I have begun listing the pros and cons of FCP vs. ZCP :=20
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FCP (reference PSS 21H 1B9 B3)
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Pro:
Hardware slightly cheaper
No FCM required
Less power consumption per module (8.5W vs 15W)
Mounted remotely (puts more D in DCS?)
Minimize/free up precious real estate in DCS cabinets in control
room
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Cons: =20
Supports only 32 series 200 FBMs or 64 100 series
For equivalent I/O capacity, FCP software license slightly more
expensive than ZCP license
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ZCP (reference PSS 21H 1B10 B3) :
Pros:
Same form factor/layout as previous CPs
Supports more FBMs (120)
Easier to combine CPs (reduce overall number of CPs) on future
upgrades (CP60-> ZCP)=20
More controls in fewer number of CPs resulting in fewer
(potential) peer to peer connections=20
Cons:
Additional hardware components required (FCM100, 1x8 mounting
structure) vs FCP
Overall hardware cost appears to be slightly more expensive
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What are other pros and cons regarding FCP vs ZCP? Architecturally, is
one better? Technically, is one superior? Long term which will be the
least expensive solution? Will one be better supported by Invensys
Foxboro (preferred product/architecture)? How does this compare with
competitive DCS manufacturers architecture direction (FCP more like
Delta V)? Which way would you go (FCP or ZCP) and why?
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Any other thoughts, comments, concerns, etc. would be greatly
appreciated...
Regards,
=20
Ted Johnson
Instrument and Control Engineer
Tesoro Alaska
PO Box 3369
54741 Tesoro Rd
Kenai, AK 99611
Direct: (907) 776-3568
Cell (907) 398-8710
Fax: (907) 776-3863
Email: tsjohnson@xxxxxxxxxxx <BLOCKED::mailto:tsjohnson@xxxxxxxxxxx> =20
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=20
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