LINK Systems 5100-8 Tonnage & Analog Signal Monitor - Manual (Page 48)

Doc #: L-802-1110 Page 46 Rev. 02
of the working portion of the stroke, it should be set prior to the angle that tooling forces begin. The
angle can not be less than 45 degrees. The default is 100 degrees.
4.4.9 Sample Window End Angle
This angle defines the point in the up portion of the stroke where the tonnage monitor stops sampling the
peak tonnage. Alarm counters are updated at this time. Since this angle defines the end of the working
portion of the stroke it should be set beyond the angle where tooling forces end. The angle can not be
greater than 315 degrees. The default is 260 degrees.
4.4.10 Auto-Zero Start Angle
Temperature changes cause expansion or contraction of machine structural members and induce strains
which can be detected by the tonnage monitor strain gages mounted to the machine frame. In addition,
strain gages are manufactured with an inherent zero imbalance which can change if the gage experiences
any long term creep. Slowly varying signals such as these are compensated by measuring the strain
gage signals while the machine frame is not exposed to any force and integrating the offset to zero. This
is performed by the tonnage monitor module automatically when the press is at the top of the stroke.
The "zero" portion of the stroke begins at the Auto-Zero Start Angle and ends at the Auto-Zero End
Angle. The default is 300 degrees and it can not be greater than 350 degrees.
4.4.11 Auto-Zero End Angle
See Auto-Zero Start Angle for information on Auto-Zero. The default for this parameter is 60 degrees
and it can not be less than 10 degrees.
4.4.12 Peak High Limit Stop Type
This parameter defines the type of stop signal issued when a High Alarm occurs in the working portion
of the stroke (View: Peak Tonnage). Choices are Cycle Stop, Top Stop, and Intelli-Stop.
4.4.13 DW High Limit Stop Type
This parameter defines the type of stop signal issued when a High Alarm occurs in data window (View:
Data Window 1-4). Choices are Cycle Stop, Top Stop, and Intelli-Stop.
4.4.14 Auto Unbypass Leaving Setup Mode
The BYPASS ON/OFF softkey in the main tonnage monitor screen bypasses all limits except Machine
Rating limits. As such, it is a powerful tool when setting up a die when strokes must be made before
material is completely fed and tonnages are at regular production levels. However, there is a danger that
the operator will forget to turn bypass back off. When this setting is “Yes”, the tonnage monitor will
automatically turn bypass OFF when switching from a setup mode to a production mode.
4.4.15 Bypass Low Limits in Setup Mode
When setting up a die, often the tonnage will not meet the limit requirements because the material is not
yet fed, the material is not completely threaded through the die, or the slide is in the process of being
adjusted to get a good part. In each of these cases, the tonnage is almost always too low and therefore