Fieldbus Validation - Intergraph Smart Instrumentation - Help

Intergraph Smart Instrumentation Help

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Intergraph Smart Instrumentation
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Smart Instrumentation Version
13.1

Smart Instrumentation validates that you design fieldbus segments according to basic connection rules and according to parameters that you set for a given segment:

On-the-Fly Connection Validations

Upon attempting to connect, the software verifies that:

  • An instrument to be connected is not associated with another segment.

  • A home-run cable to be connected is not already connected to another segment.

  • You are not associating or wiring a non-intrinsically-safe instrument to an intrinsically safe segment. In this case, Smart Instrumentation will warn, but allow.

Segment-Report Validations

You perform other validations by running a report from the Fieldbus Tag Number Browser. Smart Instrumentation notifies you in the report of a failed validation in the following cases:

  • There are fieldbus tags that are associated with a segment but not wired.

  • There are fieldbus tags that have wiring, but are not yet connected to a segment.

  • There is a connection discontinuity between the field and a DCS or an I/O channel.

  • The number of instruments in a segment exceeds the maximum specified for that segment.

  • The number of devices on a given spur exceeds the segment-wide parameter profile.

  • A spur length is exceeds the maximum set for that spur.

  • Total cable length exceeds the maximum you defined for the segment profile.

  • There are less than two terminators in a segment.

  • Actual voltage at instrument terminals is below the minimum operating voltage.

  • Total segment current consumption exceeds the maximum specified value.

  • Total capacitance exceeds segment maximum specified capacitance.

  • To define a cable type that supports fieldbus validation, make sure that in the Cable Type Properties dialog, you enter the required values for capacitance, capacitance UOM (unit of measure), cable resistance, cable resistance UOM, length UOM, and maximum fieldbus length (for details, see Create a Cable).

  • To define an instrument tag that supports fieldbus validation, make sure that on the Tag Number dialog you enter valid information under Fieldbus Tag Number Properties (for details, see Create Foundation Fieldbus and Profibus Instruments).

  • Smart Instrumentation validation supports basic fieldbus networks consisting of a single segment with no parallel branches and no repeaters.

  • For accurate results with fieldbus validation, a home-run cable must be connected to an I/O channel.