topic Re: Item stuck on merge controller in FlexSim Forum

Item stuck on merge controller

mail7WJMZ — Thu, 24 Dec 2020 01:29:05 GMT

[ FlexSim 20.2.3 ]

Hello,

In the attached model, you can see the 5th item released and stuck. How can I fix it?

mergecontrollerstuck_v20.2.fsm

Re: Item stuck on merge controller

cliff_king — Tue, 29 Dec 2020 19:55:33 GMT

Interesting problem! I played around with your model for awhile trying to fix the problem with the second "slug" release from the first conveyor getting stuck, but couldn't fix it. I assumed the problem had to do with the things that @anthony.johnson talked about in this post (https://answers.flexsim.com/questions/75670/view.html?overrideforward=1), so I played around with speeds and gaps, but had no success. I also played around with different arrival rates of items onto the conveyor and with different slug lengths (other than 1). I even moved the location of the conveyors and downstream decision point, but nothing seemed to work. I'm wondering if this is a bug, so I'll tag @Matthew Gillespie as well.

Re: Item stuck on merge controller

mail7WJMZ — Tue, 12 Jan 2021 00:59:42 GMT

Hello, has this been confirmed as a bug?

Re: Item stuck on merge controller

Matthew_Gillespie — Tue, 12 Jan 2021 16:45:00 GMT

When you're merging slug lanes like this you need to make sure that conveyor transfers are inline transfers and not side transfers.

See Problem with Merge for more discussion.

Re: Item stuck on merge controller

jason_lightfoot_adsk — Tue, 12 Jan 2021 17:02:45 GMT

Thanks Matthew.

So that means something like this if the conveyors need to be at right angles:

Model attached.

mergecontrollerstuck-v202_jl.fsm

Re: Item stuck on merge controller

Matthew_Gillespie — Tue, 12 Jan 2021 17:07:44 GMT

Yes, or you can put curved conveyors in between each intersection.