LINK Systems System 1100 Tonnage Monitor - Manual (Page 98)

USING SYSTEM 1100 TONNAGE MONITORS
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9-7
to allow this variation or, alternatively, the operator may
reset setpoints during operation after equilibrium is reached
as indicated by readings on the System 1100 tonnage displays.
9.2.1 Sample Die Setting Instructions
1) Locate dies in the previously determined optimum location that
provides approximately equal tonnage readings on each System
1100 channel, or as near to equal readings as possible when
feeding, part removal, part transfer, die design, or other
considerations prevent the die from being located in the
machine so that approximately equal tonnage readings are
obtained on each channel.
Recall the setup from permanent memory then move the keyswitch
to the BYPASS position to bypass all high, low and reverse
setpoint alarms.
3) Follow normal die setting tryout procedures, making trial
strokes with material in place and adjusting tonnage slowly
upwards by shut height adjustment of mechanically driven
machines or hydraulic pressure on hydraulic machines. When
the TOTAL tonnage displayed on the System 1100 tonnage
displays is approximately equal to the previously determined
reference value recorded on the die, check to see if a correct
part is being made. Compare the tonnage on each channel of
the System 1100 with the previously determined reference
tonnages for each channel to see if any significant changes in
load distribution have occurred. Ideally the GREEN segments
of each channel bar graph will light indicating that the
measured tonnage falls directly between the high and low
setpoint limits that were previously determined for the die.
If a correct part can be produced with the TOTAL TONNAGE set
at a value near the reference tonnage, and if load
distribution has not significantly changed, proceed to step 4
of this procedure. If load distribution is significantly
changed, relocating the die from the reference location to a
location that gives approximately equal tonnages on all System
1100 channels, if possible, is recommended only after checking
to see that excessive die wear has not caused the change in
tonnage distribution. Other causes of changing load