Analytics → Speed loss → Robot 1
Linked from alert — Speed drop, Robot 1. Line running at 96/min vs target 100/min. No alarms, no stops — throughput loss is gradual. Analysis below.
Root cause analysis — Robot 1 speed drop
WINDOW Last 6 h
MODE Execute, no stops
CONFIDENCE High
Line rate — last 6 hours (units/min)
16:0018:0020:0022:00
Probable causes, ranked
87%
Pick retry rate rising on lane 3
Robot 1 retries 1 in 14 picks on lane 3 vs 1 in 60 on lanes 1–2. Retries cost ~0.4 s each — that alone accounts for 3 of the 4 missing units per minute. Pattern matches cap orientation drift in the feed, not a robot fault.
9%
Vacuum degradation
Pick time itself is stable — inconsistent with a leak. Ruled down, kept for completeness.
4%
Upstream starvation
Infeed buffer stayed above 80% the whole window. Ruled out.
Recommended action: inspect the lane 3 cap guide rail for wear at the next micro-stop — a worn guide lets caps rotate before the pick point. Est. fix: 5 minutes, no line stop. Expected recovery: full 100/min.