LINK Systems System 1100 Tonnage Monitor - Manual (Page 93)

USING SYSTEM 1100 TONNAGE MONITORS
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9-2
increasing pressure on hydraulic machines.
2) If no alarms are tripped on the System 1100 during trial
strokes, including several trial strokes after the final
adjustment that produces a satisfactory part, the machine may
be turned over to production.
4) If a two channel System 1100 is used on the machine and a
channel 1 high setpoint and/or machine rating alarm indicates
an overload on the left side of the machine when making a
trial stroke, shift the dies to the right in the machine bed
till trial strokes indicate that the channel 1 and 2 tonnages
are approximately the same to reduce the left overload.
Similarly, tooling should be shifted left in the bed if a
channel 2 high setpoint and/or machine rating alarm indicates
an overload on the right side of the machine.
If both channel 1 and channel 2 high setpoint and/or machine
rating alarms are tripped on a trial stroke, check to see if
a correct part can be made after reducing the tonnage by shut
height adjustment, etc. Also, on "C" frame machines such as
OBI, OBS, and gap presses, check to that dies are centered
front to back under the connecting rods that drive the slide.
Dies located too far forward under the slide of such machines
cause greater strains on the machine frame.
If a correct part cannot be made without tripping one or more
high setpoint alarms and/or machine rating alarms, the die
should be placed in a machine of larger capacity or reworked
to require less tonnage to make the part.
5) If a four channel System 1100 is used on a straight side
machine, and one of the four channel high setpoint and/or
machine rating alarms is tripped during trial strokes, shift
the tooling away from the corner of the machine monitored by
the channel indicating the alarm. When possible, tooling
should be located so that approximately equal tonnage readings
are obtained on the tonnage displays for all four channels.
If, under approximately balanced load conditions, high
setpoint and/or machine rating alarms are tripped, reduce
tonnage by shut height adjustment or other tonnage adjustment
and see if a correct part can be made with less tonnage. The
tooling should be placed in a machine of greater rated tonnage
capacity or reworked to require less tonnage if a correct part