Data Inputs for OEE

Historian tags

These are guidelines for configuring historian tags for use in OEE.

For each piece of equipment/line:

  • A "product code" tag that indicates the product that is running on that Unit/Line.

For each piece of equipment or line being measured for availability:

  • A definitive running tag, or a combination of tags to determine whether the equipment/line is definitely running or not running.

  • Fault root cause tags, which determine the root cause for the equipment/line not running. "First out" tags are preferred (and are the easiest to configure). Individual fault tags can also be used, but more advanced models must be configured.

For each piece of equipment/line being measured for performance:

  • A gross production tag for each piece of equipment for "Unit OEE," or a gross production tag that represents the maximum production speed of the line for Line OEE. For example, on a beverage packing line this would come from the Filler, not the Palletizer.

Historian tags that are being used to count production should ideally be counting tags, with a sampling type of "increase" and pre-established reset values that cannot be arbitrarily reset by operators.

For each piece of equipment/line being measured for quality (in "time-based" rather than "event-based" situations):

  • Defect tags that count defects for  the equipment/line (a "defect" represents one unit of product that was not produced "first time right")

OR

  • A gross production tag for each piece of equipment for Unit OEE, or a gross production tag that represents the production of the line for Line OEE—for example, a Filler.

And

  • A "good product" tag that represents "first-time-right" net production for the equipment or the line—for example, a Palletizer.

    If 400 units are produced by a filler, and 377 units are successfully palletized, then 400 represents gross production, while 377 represents "good product."

Manual Entry

Where information cannot be provided via instrumentation (i.e., historian tags), displays should be configured to provide this necessary input.