LINK Systems System 1100 Tonnage Monitor - Manual (Page 59)

APPLICATIONS INFORMATION
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4-9
tonnage of the inner and outer slide.
4.2.5 High Speed Machines
The fast response of the System 1100 peak hold circuits and the
total logic cycle time make it possible to monitor tonnage on
machines that run continuously at speeds in excess of 2000 strokes
per minute (spm). When such machines are operated at speeds in
excess of 1000 spm at loads only a fraction of rated machine
capacity, the mechanical "noise" introduced by harmonic motion and
"ringing" of the frame may produce strains in the machine frame
that are significant relative to the load signal. If so, the load
indications of any tonnage monitor will exhibit significant
variations from stroke to stroke.
Depending on machine construction and application, however, many
high speed operations can be successfully monitored for load. The
System 1100 has superior design characteristics for these
applications. Strain Link mounting locations for "C" frame and
straight side high speed machines are the same as for slower
machines of similar frame construction.
4.2.6 Other Applications
System 1100 Tonnage Monitors can also be used on other machines
that use force in production processes. These include upsetters,
injection molding machines, cold headers, etc. Information
concerning strain link mounting locations can be supplied by your
Link representative.