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Rev AA Overall Equipment Effectiveness - Availability Tools E-2
ICE Vulcan Service Manual
Equipment Total Time = ('Power On' time) + ('Power Off' time in fault
state)
‘Equipment Downtime’ is the amount of ‘Equipment Total Time’ the equipment has spent in a
‘Equipment Fault State’. ‘Equipment Fault State’ is defined as the period where the
equipment is not available due to a fault, identified as a equipment fault.
Equipment Downtime = Equipment Total time in a fault state
When the equipment enters a equipment fault state, the downtime counter starts. The
equipment remains in this equipment fault state until the fault is cleared. If the equipment is
powered down in a equipment fault state, the downtime counter continues until equipment
is powered on and the fault is cleared.
Operational Availability
Operational Availability = 1 -
Operation Downtime
Production Time
The Production Time Proxy allows the availability calculation to change between customer
selected operating modes, either ‘Running’ or ‘Power On’. The production time is defined
based on the production time proxy chosen:
•
Running: If both equipment and printer are switched ON.
•
Power On: If the equipment is switched ON irrespective of the status of the printer.
If the equipment is powered down when a fault is active, the amount of time that the
equipment is off is also included in the production time.
Production Time Running =
('Running'
+ ('Power Off' time in fault state)
time)