Skip to main content

OEE Configuration

The OEE Configuration module is where you define how downtime and losses are classified in your plant. Before OpSee can track OEE meaningfully, you need to set up the vocabulary that operators and supervisors use to categorize production events.

OEE Configuration hub

What you configure here​

ComponentPurposeExample
Loss CategoriesHigh-level business groupings for losses"Mechanical", "Electrical", "Process"
Loss TypesOEE classifications mapped to the Six Big Losses"Unplanned Downtime", "Speed Loss", "Quality Defect"
ReasonsSpecific causes that operators select when logging downtime"Belt broken", "Material shortage", "Operator break"
Reason TreesHierarchical structures that guide operators through reason selectionA tree: Mechanical → Drive System → Belt broken

How they fit together​

  1. Loss Categories provide business-level groupings for reporting
  2. Loss Types classify losses according to OEE theory (the Six Big Losses)
  3. Reasons are the specific causes operators can select
  4. Reason Trees organize reasons into navigable hierarchies, with each node linked to a loss type
  5. Equipment Types are assigned specific reason trees, so operators see relevant choices
  6. When an operator logs downtime, they navigate the Reason Tree to select a Reason, which automatically classifies the event by Loss Type and Loss Category

Setup workflow​

Follow this order when setting up OEE configuration for the first time:

:::tip Start simple You don't need to define hundreds of reasons on day one. Start with the top 10–15 most common downtime reasons for your plant, then refine as operators provide feedback. A reason tree that's too complex will slow down operators. :::

Key concepts​

OEE Categories​

OpSee uses six OEE categories that map to the standard OEE loss model:

CategoryOEE FactorDescription
Unscheduled—No production planned (weekends, holidays)
PlannedAvailabilityScheduled stops (maintenance, changeovers, breaks)
UnplannedAvailabilityUnexpected failures and breakdowns
PerformancePerformanceRunning below ideal speed
QualityQualityDefective products
Outside Area—Losses caused by external factors

Inheritance in Reason Trees​

When you build a reason tree, loss type assignments inherit downward. If you assign "Unplanned Downtime" to a parent node, all child nodes inherit that classification unless explicitly overridden. This saves time when building large trees.

Learn more​

PageWhat you will find
Getting StartedStep-by-step setup of your first OEE configuration
Loss CategoriesCreate and manage business-level loss groupings
Loss TypesDefine OEE loss classifications
ReasonsManage the specific causes operators select
Reason TreesBuild hierarchical reason structures
AnalyticsView OEE calculations and breakdowns
ReportsGenerate OEE reports and trend analysis

Prerequisites​

Next steps​