Rockwell Automation Discrete Machine Performance Solution - Manual (Page 46)

D ISCRETE M ACHINE P ERFORMANCE S OLUTION U SER ’ S G UIDE
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„ Good Part Counter to collect the total number of good parts produced by the
workcell. Enter a description for the good produced parts (i.e., good bottles, good
screws…) and enter the PLC address of the good parts counter.
„ Bad Part Counter to collect the total number of bad parts produced by the workcell.
Enter a description for the bad produced units (i.e., scrap bottles, bad screws…) and
enter the PLC Address of the bad parts counter.
Ideal Cycle Time
The Ideal Cycle Time is part of the “Throughput” value in the OEE equation. It indicates
the length of time, in seconds, between sequentially produced parts when the machine is
running at maximum speed. If the workcell is producing parts slower than the ideal cycle
time, the OEE rating will be negatively impacted.
Select the:
„ Constant radio button and enter a value if the Ideal Cycle Time does not change.
„ Manual radio button and enter a default value to allow the line operator to enter the
Ideal Cycle Time manually, according to the operating mode of the machine.
„ Automatic radio button and enter a PLC address if the Ideal Cycle Time is available
in the control system.
Availability Status
The Availability Status is part of the “Availability” value in the OEE equation. This status
is the Monitored Availability, which indicates when the workcell is supposed to be
available to produce parts.
Select:
„ Manual and enter a default value to allow the line operator to select the Availability
Status through the Discrete MPS Operator Interface.
„ Automatic and enter a PLC address to collect the Availability Status directly from the
control system.
Discrete MPS applies the Boolean “AND” operator to the Scheduled Availability (refer to
“Collecting Performance Data” on page 23) and the Monitored Availability for a workcell
to determine the Availability value that is used in the OEE rating. This means that the
workcell is considered Available ONLY if both Scheduled Availability and Monitored
Availability indicate an Available state.
Discrete.book Page 40 Wednesday, December 8, 2004 2:22 PM