LINK Systems System 1100 Tonnage Monitor - Manual (Page 58)

APPLICATIONS INFORMATION
___________________________________________________________________
4-8
Figure 16. Overdriven Double Action Press.
If both inner and outer slide tonnage readings are desired, the
most accurate measurement is obtained by using strain links on each
connection to the outer slide as inputs to one System 1100 Tonnage
Monitor, and strain links on each connection to the inner slide as
inputs to a second System 1100 Tonnage Monitor. This is
illustrated in Figure 15.
4.2.4 Underdrive Machines
Machines that have underdrive action with connecting rods that pull
the slide(s) down from a drive system located in the bed of the
machine must be monitored by strain links mounted on each
connecting rod to the slide(s). On underdriven double action
presses, two separate tonnage monitors should be used to monitor