Different types of products, processing times and changeover times

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Marcos MNA asked Nov 22 2020 at 5:10 PM Jeanette F commented Nov 26 2020 at 4:39 AM

Different types of products, processing times and changeover times

Hello, I have just started using this program and I need to simulate a process where different type of products are processed. Each product has different processing time and it also has different changeover time between one kind of product to another one. I would really apreciate your help!

Software Version:

FlexSim 20.2.0

flexsim 20.2.0 different item types simulate changeover different time

Answer 1 · 2020-11-22T17:13:20Z

Jason Lightfoot answered Nov 22 2020 at 5:13 PM Jeanette F commented Nov 26 2020 at 4:39 AM

First, I'd recommend you do the tutorials.

Then you'll see that it's the setuptime and cycletime of a processor that is likely to be the thing you need to change, and luckily there are some standard ones for you to look at that should help you start out.

Double clicking a processor for example:

Then choose the expanding arrow to the right:

Which will give you some options:

Of which for the setup, it sounds like you;d want the From/To Lookup Table which will then give you these fields to enter the table name and type:

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Marcos MNA commented · Nov 22 2020 at 5:34 PM

Thank you very much for your quick and helpful answer! I do not know how to create different items in a source because I want to create a pull-system which must work in batches and it does not have to create/insert in the system a different kind of item since the complete batch of the item which is being processed is finished.

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Jeanette F ♦♦ Marcos MNA commented · Nov 23 2020 at 8:37 PM

Hello @Marcos MNA,

I think a process flow with your simulation will give you more flexibility to create this kind of simulation. I highly recommend going through the tutorials. They will give you a great foundation to start your model on. Once you get a model going and have a question about, please post a new question so we can help you as you learn.

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Marcos MNA Jeanette F ♦♦ commented · Nov 25 2020 at 7:27 PM

Hi, I have just finished the tutorials and tried to figure out how to create the model I need.

Apart from the fact I have not started trying to accept or reject the final product in function of a defined process quality, I will appreciate some help with this too.

I do not know how it is possible to introduce a different time of setup in a process depending on the kind of item it is processing but I would like to have this time of setup just in the first item of each type.

I have seen there are some options for fixing this setup time, one is Value By Case and another one is If Item Label Value Change but I would need a combination of both.

Thank you so much for your kind help!

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Jeanette F ♦♦ commented · Nov 25 2020 at 9:52 PM

Hello @Marcos MNA,

Could you post your model? You have asked for help on several things and it would be helpful to see where you are at and what more you need to know to create your model.

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Marcos MNA commented · Nov 25 2020 at 10:01 PM

Hello Jeannette,

Sure, I attach it.

It is a simple lineal and pull model with 4 stations. I need to fix a setup time the first time I change the processing product.

I also need to introduce a failure rate for the items and two quality controls (1 after the 2nd processor and 1 after the 4th processor) which when they detect a failure product and send them to the 1st processor or to the 3rd one, depending if it has been detected in the 1st or in the 2nd quality control.

Thank you!

Prueba 1.fsm

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prueba-1.fsm (30.9 KiB)

Jeanette F ♦♦ Marcos MNA commented · Nov 26 2020 at 4:39 AM

Hello @Marcos MNA,

Please use our best practices when asking questions. Currently the problem is that you have listed several things that you need help with on your model instead of focusing on one. This makes it hard to know how to help you because there are so many directions that we could go with teaching you something. The goal of the forum is to teach you so you can implement it into your own model instead of us creating your model. At this point I suggest that you create new questions on the forum for each of the things you need help on and give a thorough explanation. This will allow for someone to focus on one portion to teach you.

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