Optimizing Overall Equipment Effectiveness - METTLER TOLEDO
White Paper

Optimizing Overall Equipment Effectiveness

White Paper
Equipment Effectiveness
Equipment Effectiveness

Weighing equipment performance can impact overall equipment effectiveness (OEE). A new white paper explains how weighing equipment impacts and optimizes OEE factors by focusing on availability and quality.

In recent years OEE  has seen increased use in manufacturing operations as a critical metric that assesses overall performance. Each of the three factors in the OEE equation, (equipment availability x production rate x production quality) are impacted by weighing-equipment performance.

Factors that negatively impact equipment availability include:

  • Equipment failures
  • Material shortages
  • Safety-related stoppages
  • Production changeover delays
  • Operator issues, fatigue, confusion
  • External factors, such as power outages

Influences that can affect conventional strain-gauge load-cell performance include:

  • Extreme temperatures
  • Extreme voltage surges or dips arising from external events, such as lightning strikes for outdoor equipment or poor power quality
  • Load-cell performance issues, such as non-linearity, hysteresis, creep, zero change
  • Communication issues arising from cabling or junction-box failure

Several strategies can be used to mitigate these influences.

Diagnostic data of digital load cell visualized on weighing terminalPredictive maintenance
Without automated self-diagnostics, a system which is performing poorly or below standard may not be discovered until the system fails completely. The outcome can be catastrophic, leading to downtime, or even worse a system that provides inaccurate weights which result in end product quality problems not detected until a downstream quality check identifies a problem.

Advanced weighing systems have predictive failure capabilities, which can identify load-cell signal degradation or erratic weighing performance. By eliminating failure sources, as well as providing smart diagnostics, the availability factor of the OEE equation can be maximized.

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