The BreakthroughTonnageExceededConditionClassType is an abstract ObjectType which should be caused when the breakthrough tonnage limit of the machine is exceeded. The breakthrough tonnage generates a resistance by internal orifices that restrict the flow of oil out of the cylinder resulting in a cushioning effect. For example, shock dampers provide an upward counterpressure at the moment of breakthrough, resulting in a damping force as shown in Figure 22 for a hydraulic press machine.

Figure 22 – Breakthrough tonnage

The BreakthroughTonnageExceededConditionClassType is formally defined in Table 24.

Table 24 – BreakthroughTonnageExceededConditionClassType Definition

Attribute	Value
BrowseName	BreakthroughTonnageExceededConditionClassType
IsAbstract	True
References	Node Class	BrowseName	DataType	TypeDefinition	Other
Subtype of the FormingProcessConditionClassType defined in 7.8 i.e. inheriting the InstanceDeclarations of that Node.
Conformance Units
MetalForming BreakthroughTonnageExceededConditionClassType