Rockwell Automation Arena Packaging Users Guide - Manual (Page 96)

A RENA P ACKAGING T EMPLATE U SER ’ S G UIDE
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When the simulation begins, Arena Packaging creates the failure streams specified in the
Failure Streams repeat group. The times and counts between failure arrivals are sampled
from the Time and Count Between Failures operands.
When a failure occurs, the equipment is stopped and its state is set to Failed. The down-
time duration for each failure stream is its Time to Repair. If a random distribution is used,
then the Time to Repair is sampled from that distribution at the beginning of each failure.
The Time to Repair can also be adjusted by operator skill factors if repair operators are
used. Refer to “Step 5 • Experiment with complex strategies” on page 15 for more detail
on modeling labor in the system.
Questions and answers about reliability
Q: During the simulation, how do I know a piece of equipment has failed?
A: When a machine, conveyor, or palletizer fails, the state variable of the affected module
is automatically set to Failed. You can easily animate the state variable for a machine,
conveyor, or palletizer by checking Animation in the Other Options section of the
main dialog. By default, the picture representing the Failed state is always red. Refer
to the Variables Guide for a reference on the state variable of a particular module.