
Calibration
AutoSet 1500 User Manual
37
Ch 3
1088500
Adjusting AutoSet to read the correct tonnage
1. Now you are ready to make the all-important adjustments so the tonnage
displayed for each strain link reads the same as on your calibration unit.
Turn toggle switch S3 to "operate."
2. Find the two potentiometers for setting gain at the bottom center of the AutoSet box.
They are the two small blocks with a tiny screw protruding from the upper left
corner of each block. (See Figure 2-2). You adjust the tonnage by turning this screw.
Figure 3-7. Potentiometer for setting gain
3. Start with the left strain link. The gain potentiometer (R17) on top (in line with
the left strain link connector TB6) adjusts the gain for this strain link. First take a
look at the jumper (J6) above R17 (see Figure 2-2 for exact location). It should be
set to the left (in other words, the right pin of the jumper connections will not be
covered by the jumper block). See Figure 3-8. This jumper setting is the
low gain
setting. If necessary, you will need to move the jumper to the
high gain
setting
later. For now, make sure the jumper is at the low gain setting.
Figure 3-8. Jumper position for low gain and high gain
4. Cycle the press and determine whether the tonnage displayed on AutoSet is
greater or less than the tonnage displayed on your calibration unit.