Robotics & Automation worked example

Robot Changeover Time at 18% verification and first-off allowance: a worked example

Suppose verification and first-off allowance falls to 18%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate minutes of robot cell changeover from changeover steps, step completion rate, and a parallel work and verification allowance.

The inputs for this scenario

  • Changeover steps (EOAT, recipe, fixture, vision): 18 steps (held at the documented default)
  • Step completion rate: 1 steps / min (held at the documented default)
  • Verification and first-off allowance: 18 % (the input this scenario stresses; the baseline uses 25)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base robot changeover time = changeover steps / step completion rate.
  • Required robot changeover time works out to 21.24 min at these inputs, and this is the headline figure for the scenario.
  • Base robot changeover time works out to 18 min at these inputs.
  • Verification and first-off allowance applied works out to 18 % at these inputs.
  • Step completion rate works out to 1 pieces / min at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where verification and first-off allowance sits at 25% and the headline result is 22.5 min, this scenario comes in 5.6% below the baseline at 21.24 min.
  • It converts a count of discrete changeover steps and your step completion rate into base minutes, then inflates that by a verification and first-off allowance to give the realistic time to first good part. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Required robot changeover time: 21.24 min (headline result)
  • Base robot changeover time: 18 min
  • Verification and first-off allowance applied: 18 %
  • Step completion rate: 1 pieces / min

Run it with your numbers

  • To rerun this with your own numbers, open the live Robot Changeover Time calculator, set verification and first-off allowance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.