why we are using MARSHALLING PANEL? what is the role?
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Answer Posted / rodney
There is a more practical reason for using a Marshalling Panel which becomes apparent if we imagine a multi-cable coming from the field and being connected directly to the I/O cards of a DCS. Whenever some kind of maintenance/test/check has to be performed just imagine the risk of interfering directly at an I/O card just to open some loop circuit. There would be the risk of touching another entry , loosing some bolt, and many other situations that could jeopardize the whole I/O card for some lack of other space specifically created to allow the proper access for maintenance and testing - the Marshalling Panel. Once the connections between all the I/O cards and a Marshalling Panel are done, tested and identified, no one wil have to deal with the I/O panel again, which means less risk and a proper place to do maintenance and testing, for there will be proper open/close connectors, fuses, isolators and all that the Project specifies.
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