What causes fault code PAL-CONV-INFEED (Palletizer Infeed Conveyor — Product Jam at Turn)?

Conveyor speed mismatch at the turn — upstream too fast, turn conveyor too slow. Guide rails at the turn are too tight — not enough clearance for product dimensions. Turn belt or roller surface worn — insufficient friction to push product through the turn. Product bottom surface slippery — product slides straight instead of following the curve. Turn conveyor not level — products tipping at the transition

How do I fix fault code PAL-CONV-INFEED?

Clear the jammed products from the turn area. Verify conveyor speeds — upstream, turn, and downstream should be matched or turn should be slightly faster. Adjust guide rails at the turn — provide 1/4 to 1/2 inch clearance on each side of the product. Inspect turn belt or roller surface — replace if worn smooth. Verify turn conveyor is level — shim if needed to prevent product tipping. If product is slippery, add a deflector plate or powered side-transfer belt to assist product through the turn

Palletizer Infeed Conveyor — Product Jam at Turn

PAL-CONV-INFEED

Product jammed at the palletizer infeed conveyor turn or curve. Products are not negotiating the turn cleanly, causing pileup and line stoppage.

medium palletizer conveyor

palletizer infeed conveyor turn jam curve speed

Probable Causes (ranked)

Conveyor speed mismatch at the turn — upstream too fast, turn conveyor too slow
Guide rails at the turn are too tight — not enough clearance for product dimensions
Turn belt or roller surface worn — insufficient friction to push product through the turn
Product bottom surface slippery — product slides straight instead of following the curve
Turn conveyor not level — products tipping at the transition

Fix Steps

1 Clear the jammed products from the turn area
2 Verify conveyor speeds — upstream, turn, and downstream should be matched or turn should be slightly faster
3 Adjust guide rails at the turn — provide 1/4 to 1/2 inch clearance on each side of the product
4 Inspect turn belt or roller surface — replace if worn smooth
5 Verify turn conveyor is level — shim if needed to prevent product tipping
6 If product is slippery, add a deflector plate or powered side-transfer belt to assist product through the turn

Field Trick

Product jams at conveyor turns happen more with tall, narrow products than short, wide products. The center of gravity is too high, so the product tips when it changes direction. Slow down the infeed speed by 10% before the turn — it reduces the lateral force on the product and eliminates 80% of the tipping jams.

Suggested Replacement Parts

Parts matched to fault category: Conveyor Belt

Intralox Series 400 Flat Top Belt (per ft) P/N: S400-FT-12 12 inch wide, acetal flat top, food-grade option available

McMaster-Carr $35.00 Grainger $42.00 Amazon $30.00

Prices are estimates. Verify part numbers match your equipment before ordering.

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