📌 PTF – Inputs, activities and outputs

🔷 1. Inputs – What is needed?

To start the PTF process, we need information, requirements and basic knowledge:

Category	Description
process description	rough procedure, purpose of the process, machine function
product requirements	quality characteristics, tolerances, test conditions
technology ideas	suggestions or specifications for technologies to be used (e.g. screwing, bonding, testing)
mechanical concepts	information about the planned mechanics (e.g. cylinders, grippers, positionings)
electrics & sensor technology	use of planned sensors, actuators, signal types
previous experience	lessons learned from similar plants or predecessor projects
standards & safety requirements	technical rules, functional safety, test requirements
interface requirements	requirements for control, HMI, MES, data flow

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🔷 2. Activities – What is done? (analysis phase)

Phase	Description
analyze process	identify steps, sequences and logical flows
assess technology	select, compare and, if necessary, test technologies
formulate functions	derive control logic from physical, mechanical and electrical relationships
derive parameters	define time, position, force, tolerances, etc.
check feasibility	alignment between idea, technology and implementation (if necessary iteration)
prepare structure	create initial outline into Plant – Tasks – Functions

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🔷 3. Output – What is the result of the PTF?

Result	Description
✅ cleaned and structured process description	clearly understandable procedure for modeling
✅ technology decisions	documented selection of the methods used
✅ Function definitions	logically described control functions as a basis for sequence modeling
✅ Parameter list	time values, positions, test thresholds, etc. with technical relevance
✅ model structure template	outline for later modeling in Selmo (Plant – Task – Function)