DEX: FaultDefinition DEX - Business Information Model

The FaultDefinition: Business overview section provided a high level overview of the business information that can be represented by this DEX. This section provides a more detailed overview of that information. A description of how to represent this information using ISO 10303-239 PLCS is provided in FaultDefinition: PLCS PSM Representation.

A detailed view of the information to be exchanged is provided by the SysML model in Figure 3. This shows all the information that can be exchanged by the DEX.

NOTE The information shown in the SysML Block Definition diagram in Figure 3 is intended to illustrate the type of information that can be represented by the DEX. It does not imply that all exchanges must contain all this information.

NOTE The information shown in the SysML Block Definition diagram in Figure 4 is intended to illustrate the Information needed to exchange Fault Definitions data using this DEX.

Model Diagrams

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Figure 3 - SysML Block Definition diagram representing the Fault Definition BoM

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Figure 4 - SysML Block Definition diagram representing the Message Fault Definition BoM

Class Descriptions

The section describes the different classes used for Exchange according to this DEX.

FaultEffectDefinition

The FaultEffectDefinition template describes how to represent the effect a fault mode could have on a specific function or on the entire product. May be expressed as local effect, intermediate effect or top effect, e.g. a leaking fuelpipe causes local effect on…, itermediate effect on…, and … effect on top level.

Attribute	Description
concernedFunction	Relationship to the functional structure element that suffers from a fault effect.
criticalityLevel	Indication of how critical the fault effect is for the product's function and use.
faultEffectDescription	Description of a fault effect.
faultEffectId	Identification of a fault effect definition.
faultEffectLevel	The level in the product structure at which the FaultEffectDefinition was discovered, according to DEF-STAN 00-60 (local, next-higher, or end item). Should be used if no FunctionalStructureElement is related (parameter concernedFunction)
resultOf	Relationship to the fault mode that causes the fault effect.

Table 2 -FaultEffectDefinition

FaultModeDefinition

The FaultModeDefinition template describes how to represent a possible fault. Indicates in what ways a specific ItemDefinition may brake or malfunction, e.g. too low battery voltage. A fault mode is always related to a component. Note that a fault mode may be rectified by given task methods.

Attribute	Description
causesUsageRestriction	Relationship to a usage restriction definition for a type of product that is a recommended usage restriction for any individual of that type where this fault mode has occurred.
concernedLocation	Relationship to the physical location of the fault (through the faulty physical structure element), should the fault mode occur.
consequenceDescription	Description of the consequences, should the fault mode occur.
faultCauseDescription	A description of the cause of the fault mode. Should only be used if the cause itself is not defined as a fault mode.
faultDetectionMethod	Classification of a fault mode definition by the detection method.
faultModeDescription	Description of fault mode.
faultModeId	Identifies a specific fault mode.
faultOnItem	The ItemDefinition corresponding to an individual part that will be faulty because of the FaultMode.
meanTimeBetweenFailure	Mean Time Between Failure is used for simulation and planning. It indicates how often the fault may occur in the concerned location (MTBF).
operatingMode	The operating mode(s) for which the fault mode definition (and associated mean time between failure) has been defined.
rectifyingTask	Relationship to a TaskMethod that should be used to rectify the fault.

Table 3 -FaultModeDefinition

FunctionalElement

The FunctionalElement template describes how to represent a position or element in the functional structure, e.g. breaking, propulsion, or communication function. These functional structure elements are often used in fault finding. May also be called "fault location code" or "feature".

Attribute	Description
breakdown	Relationship to the functional structure that contains the functional structure element.
functionalElementId	Identifies a functional element uniquely (within the functional structure).
functionalElementName	Name of the functional element
functionalElementVersionId	Identification of the functional element version.
physicalElementRealization	Relationship to a physical element that realizes a functional element.

Table 4 -FunctionalElement

MessageFaultDefinition

The MessageFaultDefinition template describes how to represent a message concerning fault mode definitions.

Attribute	Description
dateMessageSent	The date time when the message is sent.
messageId	The identifier for the message.
messagePurpose	The purpose of the message.
messageSentBy	The organization that sends the message.
messageSentTo	The organization that receives the message.
securityClassification	The security classification for the message.
contents	The fault mode definitions and related information contained within the message.

Table 5 -MessageFaultDefinition

OperatingMode

The OperatingMode template describes how to represent the conditions that arise from the use and application of the equipment, infrastructure or system.

Attribute	Description
operatingModeEnvironment	Description of the environment of the operating mode.
operatingModeIdentifier	Identifier of the operating mode.
operatingModeIntensity	Assumed intensity of the operation mode.
operatingModePhase	Usage phase (e.g. warranty, usage or settlement).
operatingModeValue	Value of the operating mode, i.e. inUse and inStorage.

Table 6 -MessageFaultDefinition

PhysicalBreakdown

The PhysicalBreakdown template describes how to represent a structural breakdown of the product describing the physical placement of each ItemDefinition. Note that this structure may concern a product, e.g. a vehicle, but also a contained ItemDefinition with its own structure, e.g. an engine.

Attribute	Description
breakdownOf	Relationship to the Product configuration that this is a physical breakdown structure for.
physicalStructureId	Identification of the physical structure.
physicalStructureName	Name of the physical structure
physicalStructureVersionId	Identification of the physical structure version

Table 7 -PhysicalBreakdown

PhysicalElement

Represents a position (or a "hole") in the physical structure. The position (structural element) may have an "applicability", i.e. a list of valid ItemOfSupplies that can be used at this position.

Attribute	Description
breakdown	Relationship to the physical structure that contains the physical structure element.
physicalElementId	Identifies the physical element uniquely (within a physical structure).
physicalElementName	Name of the physical meter element.
physicalElementVersionId	Identifies a physical meter element version uniquely (within the physical element)

Table 8 -PhysicalElement

TaskMethod

The TaskMethod template describes how to represent a generic description of how to perform an activity (TaskInstance), including the estimated duration, competence requirements and needs for tools.

Attribute	Description
concernsPlacement	The Physical Element for which the TaskMethod is valid.
non-executionCausesUsageRestriction	Relationship to a usage restriction definition that is recommended to be imposed on an item of supply individual if the task method is not executed according to its intervals and maintenance plan.
taskMethodId	Identification of task method.
taskMethodInstruction	The description of how to perform the work, if this is not specified using Template Information Required.
taskMethodName	Name of task method in free text.
taskMethodRevisionId	The revision or version of the task method.

Table 9 -TaskMethod

UsageRestrictionDefinition

The UsageRestrictionDefinition template describes how to represent a pre-defined restriction on product usage, such as "immobilisation", e.g. as a result of neglected maintenance tasks.

Attribute	Description
definedByOrganization	Relationship to the organization that defines the usage restriction definition.
definedByPerson	Relationship to the person that defines the usage restriction definition.
restrictionOnItem	Relationship to the item of supply for which the usage restriction definition is defined.
revokableByAuthority	Authority that may annul the restriction, e.g. inspector.
revokableByTaskMethod	Classification of usage restriction definition indicating that it may be automatically revoked by the execution of a task method.
usageRestrictionDescription	Description of the restriction.
usageRestrictionId	Identification of the usage restriction definition.
usageRestrictionName	The name of the restriction.

Table 10 -UsageRestrictionDefinition