process flow MTBF-MTTR

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yoni A asked Jun 20, '18 Matt Long answered Jun 22, '18

process flow MTBF-MTTR

breakdown-sample.fsm

I am trying to understand why the MTBF-MTTR is not working

1- from 8 to 8:30 is a scheduled downtime of 30 min and from 16:30 to 17:00 as well

2- there is a lunch from 12:00 to 13:00

3-Random breakdown happens

4- Do I have to several preemption blocks for every process? How do I add the previous logic when I have several process in the same simulation(scheduled downtime, lunches, breakdown)

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mtbf mttr

breakdown-sample.fsm (31.0 KiB)

· 3

tannerp commented · Jun 20, 2018 at 07:21 PM

Could you please specify where in your model you'd like the MTBF-MTTR to follow the prescribed limitations?

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yoni A commented · Jun 20, 2018 at 07:25 PM

I need to add it to both the press and the laser the two resources, @Tanner Poulton

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tannerp yoni A commented · Jun 20, 2018 at 08:05 PM

I'm not familiar with how to do MTBF-MTTR logic in Process Flow.

One suggestion I thought of is to create objects in your 3D model then connect the resources to the objects in your 3D model (even if you're not using them for anything). This should allow you to assign breakdown times, etc. to the objects that will be reflected in Process Flow.

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Answer 1 · 2018-06-22T03:49:55Z

Matt Long answered Jun 22, '18

I would assume that each process, being a different machine, would have its own breakdown times. If this is the case, you can create the preemption logic in a sub flow, and then call the sub flow at each breakdown.

Then you just use the labels in the Run Sub Flow activity to define which activities to look at, what the delay time is etc.

If you're trying to preempt tokens from multiple activities at once, then you'll need to either create a label where you grab references to all of the necessary tokens, or create a loop and loop through an array of activities.

The scheduled down times and lunch could just be another source and Run Sub Flow activity.

breakdown.png (28.2 KiB)

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