The Activity Ratio is a percentage ratio, created by edinn, which measures performance of a person who operates machinery. Its use is necessary because it is not correct to use OEE to measure performance of personnel operating machinery.

Let us see two examples to understand this better:

  1. Let us imagine one person who produces very long series, with very few changes, using modern, fast and powerful machinery, which produce with high quality and which requires very little maintenance.
  2. Let us imagine, on the other side, another person who produces very short series, with a lot of changes, using old, slow and not powerful machinery, which produce with low quality and which requires a lot of maintenance.

OEE is appropriate to measure performance of the modern and old machinery, but it is clearly not to measure performance of the persons operating in the case 1 and 2, as both persons are neither responsible of the machinery nor of length of the orders assigned to them.

Because of what was previously explained, it is necessary the Activity Ratio, which measures personnel performance with maximum independence of the context.

How is this solved in edinn?

By configuring a percentage of activity for every status of the process. For those statuses where the personnel is not responsible of, a zero percentage of activity should be configured.

When a status has a maximum time, and after that time it is not responsibility of the personnel (for example with a change of reference), then it should be configured a zero percentage for the status which has maximum time and is not responsibility of the personnel, and a percentage different from zero for the status of excess.

Cuando un estado tiene un tiempo máximo, y a partir de ahí ya es responsabilidad del personal, por ejemplo un estado de cambio de referencia; entonces se configura porcentaje cero para el estado que tiene tiempo máximo y no es responsabilidad del personal, y un porcentaje distinto de cero para el exceso.