LINK Systems System 1100 Tonnage Monitor - Manual (Page 97)

USING SYSTEM 1100 TONNAGE MONITORS
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9-6
around the measured tonnage.
The Auto Setup tolerance can be increased and the Auto Setup
function executed again if nuisance stops due to normal
variations in production tonnage occur.
Once established, the initial setpoint tonnages for each
channel of the System 1100 should be recorded on the label
that contains initial optimum location and tonnage records for
reference in future setups. The record should be kept on a
separate label from the original die maker's specifications.
The die maker's specifications should be left on the die! The
tonnage setpoint limits should also be stored in the permanent
memory of the System 1100 (section 2.5) for recall when the
die is used in the future. The System 1100 provides storage
for up to 123 setups.
2) Each time the tooling is used, the die setter should reference
the initially determined optimum tooling location, minimum
required tonnage, and should recall the tonnage setpoint
limits for that die from permanent memory. Of course die wear
and differences in material may require some changes in setup
tonnages and setpoints from the initial reference values.
By comparing the progressive variation in minimum tonnage
required to make a correct part with the initial values, die
rework can be scheduled. After a die is reworked or repaired,
reference location and minimum tonnage and setpoint limits for
each System 1100 channel should again be determined and
recorded.
3) During production, the System 1100 will generate an alarm,
stop the machine, and prevent further strokes until the alarm
is cleared if tonnage falls below a low setpoint or rises
above a high setpoint. When this occurs the operator should
clear the condition, or call the supervisor to clear the
condition, before the alarm is reset and production resumed.
High and low setpoint alarms may have to be changed where
alarms are tripped due to greater than expected variation in
material or tooling wear that occurs over longer runs.
On high speed machines, dies in rapid operation may heat
enough that die expansion causes tonnage to progressively
increase toward some equilibrium tonnage after stroking
begins. Setpoint limit tolerances will have to be increased