Every manufacturing process has its own rhythm and cadence and it is important to know what “normal” or “healthy” looks like.
As far as Running Time, Uptime, or Utilization Time is concerned, a higher number is not always better. For instance, an old machine, running at a slower rate, will likely have a higher uptime and utilization time than a new machine. It is important to know why a machine is not running, and why its numbers may be low, whether it’s maintenance, no work scheduled, completed jobs early, or being set up for a new job.
Knowing the VAA (value added activity) of the machine is important. Knowing the reasons for the non-value adding activity is equally important.