What causes fault code CONV-ESTOP1 (Conveyor E-Stop Pull Cord Activated)?

Operator pulled the cord intentionally — emergency situation. Product or debris snagged the pull cord — unintentional activation. Pull cord tension spring weak or broken — cord sags and triggers from vibration. Pull cord switch failed — internal mechanism triggered without cord pull. Pull cord cable broken — switch sees loss of tension as an activation (fail-safe design)

How do I fix fault code CONV-ESTOP1?

Walk the conveyor and find the activated pull cord section — look for pulled or slack cable. Check for any emergency condition that caused the pull — person, product jam, or fire. Reset the pull cord switch at the activation point — most have a twist-reset or push-reset button on the switch body. Verify all pull cord sections are under proper tension — cable should be taut but not over-tensioned. Replace broken or frayed pull cord cable — stainless steel cable lasts longer than galvanized in wet environments. After clearing and resetting, press the conveyor safety reset button to re-enable the section

Conveyor E-Stop Pull Cord Activated

CONV-ESTOP1

Emergency stop pull cord along the conveyor section has been activated. Conveyor section is stopped. Pull cord must be reset at the activation point before conveyor can restart.

medium conveyor

conveyor e-stop pull cord safety emergency cable

Probable Causes (ranked)

Operator pulled the cord intentionally — emergency situation
Product or debris snagged the pull cord — unintentional activation
Pull cord tension spring weak or broken — cord sags and triggers from vibration
Pull cord switch failed — internal mechanism triggered without cord pull
Pull cord cable broken — switch sees loss of tension as an activation (fail-safe design)

Fix Steps

1 Walk the conveyor and find the activated pull cord section — look for pulled or slack cable
2 Check for any emergency condition that caused the pull — person, product jam, or fire
3 Reset the pull cord switch at the activation point — most have a twist-reset or push-reset button on the switch body
4 Verify all pull cord sections are under proper tension — cable should be taut but not over-tensioned
5 Replace broken or frayed pull cord cable — stainless steel cable lasts longer than galvanized in wet environments
6 After clearing and resetting, press the conveyor safety reset button to re-enable the section

Field Trick

Pull cord E-stops are supposed to activate when pulled 2-4 inches. If one keeps triggering from vibration, the tension is wrong. Walk the full length of cable and adjust turnbuckles at each support bracket until the cable is taut with about 1 inch of free movement before the switch triggers.

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