What causes fault code CONV-CHAIN-BRK (Chain Conveyor — Chain Break Detected)?

Chain link failed — fatigue crack in side plate or pin sheared. Master link (connecting link) failed — clip or cotter fell off, link separated. Excessive chain overload caused instantaneous failure. Foreign object jammed in sprocket — chain snapped from the force. Chain tensioner failed — excessive slack allowed chain to jump sprocket and snap

How do I fix fault code CONV-CHAIN-BRK?

STOP the drive immediately — running a broken chain causes secondary damage to sprockets, guides, and product. Lock out / tag out the conveyor drive before entering the conveyor. Locate the break point — inspect for sheared pins, cracked plates, or separated master links. Remove damaged chain sections — pull chain out through the maintenance access. Do NOT splice a broken chain — replace the entire chain strand. Inspect sprockets for damage from the broken chain — replace any with chipped or bent teeth. Check the zero-speed sensor and wiring — verify it would have caught the failure sooner if properly calibrated

Chain Conveyor — Chain Break Detected

CONV-CHAIN-BRK

Chain break sensor or zero-speed switch detected that the chain has broken or the tail shaft has stopped rotating while the drive motor is running.

critical conveyor

conveyor chain break zero-speed failure master link

Probable Causes (ranked)

Chain link failed — fatigue crack in side plate or pin sheared
Master link (connecting link) failed — clip or cotter fell off, link separated
Excessive chain overload caused instantaneous failure
Foreign object jammed in sprocket — chain snapped from the force
Chain tensioner failed — excessive slack allowed chain to jump sprocket and snap

Fix Steps

1 STOP the drive immediately — running a broken chain causes secondary damage to sprockets, guides, and product
2 Lock out / tag out the conveyor drive before entering the conveyor
3 Locate the break point — inspect for sheared pins, cracked plates, or separated master links
4 Remove damaged chain sections — pull chain out through the maintenance access
5 Do NOT splice a broken chain — replace the entire chain strand
6 Inspect sprockets for damage from the broken chain — replace any with chipped or bent teeth
7 Check the zero-speed sensor and wiring — verify it would have caught the failure sooner if properly calibrated

Field Trick

After a chain break, always find BOTH ends of the chain before restarting. A loose chain end wrapped around a shaft or sprocket can cause catastrophic damage when you restart. Walk the entire conveyor and account for every inch of the broken chain.

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