The OEE Waterfall displays loss categories and breaks down all categories of production that make up a specific machine, area, or line. The display breaks down into availability, performance, and quality. It can be further broken down into areas of focus, such as machine state or downtime losses, utilizing your Downtime Group configuration. Keep reading for a breakdown of the OEE Waterfall Features.
Scheduled Time: the amount of time this machine is scheduled to run for the given time period.
Shutdown: the amount of time difference between Duration and Scheduled Time. Reasons are shown upon expansion by clicking the Shutdown bar.
Planned Time: any time associated with the blue “planned” categories in the downtime reasons list below. Clicking the Planned column will expand it to show the reason associated with the planned time. In this case, “Sanitation” is the associated reason.
Available Runtime: all other time not grouped under Planned time. This breakdown is also reflected in the summary chart below in which Planned and Available Runtime add up to Scheduled time.
Unplanned Time: includes any time that falls under the red Unplanned reasons in the Downtime Reasons list. This list can be further expanded to drill into the top categories by clicking on the Unplanned column as shown in the images below:
Productive Time: the difference between Available Runtime and Unplanned time
Speed Loss/Gain: time (%) lost/gained from running undercycle/overcycle
Quality Loss: A positive quality loss (or excess good) value represents the time lost due to scrap during production. A negative value represents either excess good or rework on a machine/line. Quality loss is calculated as Scrap Parts/Rate.