Rockwell Automation FactoryTalk Metrics User Guide - Manual (Page 74)

Chapter 3 Collecting Performance Data
scheduled to be available for an 8-hour shift, there can be times
during that shift when the machine is not capable of producing
output through no fault of its own. It might be starved by an
upstream process, blocked by a downstream process, or it may have
no work orders. If these times are excluded from the available time,
the result is a more accurate picture of the machine’s actual
efficiency. To get this information, you must use one of the
Monitored Availability options. Of course, you will also want to
track these non-productive times as custom events or machine states
in order to get an accurate picture of how much production time is
being lost and where the fault lies.
By default, an activity area must be both Scheduled Available and
Monitored Available to be overall available and to accumulate
Available Time.
To configure Monitored Availability:
Select one of the following options to indicate how the application
should determine the actual availability of the activity area:
• The Plant Model Activity Area is always available.
Select this option if you want to disable Monitored
Availability. The overall availability will be determined based
on the state of Scheduled Availability only. As a result, the
non-production time that is not the fault of the activity area
(e.g., when the machine is waiting for parts) will cause the
OEE rating of the activity area to be artificially low.
• The Plant Model Activity Area determines Monitored
Availability based on the current Machine State.
74 Rockwell Automation Publication PLTMT-UM001M-EN-P-June 2014