RJG Lynx OR2-M, Product Manual

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Product Manual | Lynx™ Shielded Dual‑Relay Output Module OR2‑M
RJG, Inc. 19
TROUBLESHOOTING
COMMON SORTING SETUPS
GOOD OR FAIL‑SAFE SORTING
If the “reject” sorting output is being used
but the “good” sorting output is not from the
eDART , then fail‑safe sorting is not being used.
Fail‑safe sorting prevents “bad” parts from being
placed with ‘good” parts; when set up correctly
in the
eDART software, if anything in the system
is not working properly, then no parts will be
placed with good parts/shipped to the customer.
The sorting output is assigned as “good” in the
software; the sorting equipment moves the
part to a “good” location. The
eDART must be
running, have the alarms set correctly, and the
cables/wiring connected to the part sorting
equipment.
THREE‑WAY SORTING
Sorting while processing expensive inserts or
expensive materials with tight alarms can cause
“reject” of some good parts. Using three‑way
sorting, alarms can instead be set for just those
things that are known to be “bad”, such as no
pressure at the end of the cavity (short shots),
while parts that may need inspection can be
sorted as “suspect” if warnings are set more
closely.
The sorting equipment is told to put parts into
the “good” bin only when the “good” signal is
on. Parts go into the “reject” bin only when the
“reject” signal is on. If neither signal comes on
then the parts are considered “suspect”—it was
not determined whether the parts are “good” or
“bad”.
The parts in the “suspect” bin can then be
manually sorted and, if good, can then be sold.
The sorting load is dramatically reduced to just
the “suspect” parts instead of all parts.
Three‑way sorting is also fail‑safe. If the
equipment fails, the power is off, or the job is
not started, then no “bad” parts are shipped
to the customer—each part is sorted as
“suspect”. Any time a level goes out of limits
on a “warning” line (with no rejects at the same
time), the parts are sorted as “suspect”.
If many “good” parts are discovered in the
“suspect” parts at inspection, then it is okay
incrementally widen the warning band; if many
“bad” parts in the “suspect” parts at inspection,
then it is okay to incrementally tighten the
alarm band. Fewer and fewer parts will fall in
the “suspect” range without the risk of sending
“bad” parts to the customer.