Wintriss SmartPAC 2, Руководство пользователя

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1128600 SmartPAC 2 with WPC 2000 Integration User Manual
H-6 Reporting Downtime and Scrap to SFC
these cases, the period during which the press is offline and the time immediately following
press power-up are assigned to the machine state in effect when the press was powered down.
SmartPAC 2 can be programmed so that Unplanned Downtime reasons selected from the
Dialog Menu also “persist” through press shutdowns (see
Making Downtime Reporting
Settings
, page H-7). When this setting is enabled, both the interval during which the press
was powered down and the time following resumption of power to the press are assigned to
the downtime reason in effect when the press was shut down. One second of the period during
which the press was offline is assigned to Offline Time to document this event.
Single-stroke Mode
For hand-fed applications, a special setting can be programmed at the SmartPAC 2 (see
Making Downtime Reporting Settings
, page H-7) that allows the state of the press to be
continuously reported as “Running” as long as the operator maintains a pre-determined cycle
time. Normally, Single-stroke operation produces an alternating series of “Running” and
“Idle” events as the press cycles and then stops to allow the operator to remove one part and
load another. Since the state of the press is reported as “Running” only a fraction of the time
even when the operator is maintaining an acceptable production rate, this data stream does not
accurately reflect press productivity, skewing OEE ratings unfairly downward.
When you make this cycle time setting, SmartPAC 2 no longer looks for a change of state to
determine whether the press is running but rather expects to see the press stroke at least once
during the pre-programmed interval. If a stroke is detected, the press is reported as
“Running”; if not, the press is considered to be stopped and reported as “Idle.”
Reset Strokes Counters
Normally, a period of Idle Time, Planned or Unplanned Downtime, or Changeover Time is
ended when the operator selects “Back on Line” from the Dialog Menu and restarts the press
(see
Putting the Press “Back on Line,”
page H-3). However, since the operator may forget to
select the “Back on Line” item, an alternative way of terminating a period of downtime is
available.
SmartPAC 2 can be programmed to begin logging time following a downtime period to
Running Time after a specified number of press strokes. A Reset Strokes counter (see
Making
Downtime Reporting Settings
, page H-7) begins incrementing when the press is restarted, and
after the counter reaches its preset, SFC changes the machine state to which it logs press time
from the downtime reason to Running Time. Three different Reset Strokes counters can be
programmed, allowing you to set different restart intervals following periods of Planned
Downtime, Unplanned Downtime, and Changeover time.