Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


MPM prestop position

kentes

#35292

MPM prestop position | 5 July, 2005

We have one set MPM AP25. Its prestop position is not stable,but stop position is stable. It often occur "time out" alarm when load PCB.Which one can help us.

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PWH

#35329

MPM prestop position | 6 July, 2005

At times we have had this problem with our AP25 due to one of the conveyor belts slipping. Load a PCB and check to see that both conveyor belts are running at the same speed. If not, tighten the one that is dragging. Hope this helps.

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URL

#35359

MPM prestop position | 7 July, 2005

Check to make sure your conveyors are parallel. Also verify the the width to make sure the belts are supporting the board properly. Sounds funny, but I see this more times than anything else.

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PWH

#35360

MPM prestop position | 7 July, 2005

Agree with D.B. We have also had to replace the belt that runs the auto conveyor width function. It might look just fine, but it will skip teeth on occasion if stretched or worn. Reparallelling the conveyor rails can be done manually by skipping teeth on one drive gear out of two for the conveyor width drive system. Loosen the belt tensioner while doing this. Use a thick, stiff board to visually see that they are parallel and you should be fine. When you go to run a program, be sure that conveyor width looks good. If not, simply jog the width to where it will work for your PCB.

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