AutoSetPAC User Manual
1101600
Chapter 3 Initialization and Calibration
85
4.
Determine the load you will put on the load cells. This value should be equal to the tonnage you
normally use when making parts. For example, if you usually run between 60–90% of press
capacity, then calibrate the press at 75% of capacity. This setting will yield the most accurate
tonnage readings within this range. Make sure that you do not calibrate the press at less than 50%
of capacity. Also, make sure not to exceed press capacity.
NOTICE
DO NOT STOP THE RAM ON THE LOAD CELLS. ALWAYS CYCLE THE PRESS THROUGH
A COMPLETE STROKE.
5.
Power up the press, and cycle the press through one stroke.
CAUTION
DO NOT STICK PRESS ON BOTTOM
Do not overload the press by lowering the ram too quickly. You may stick the press on the
bottom. Increase the load gradually. Unlike the softer material used for making parts, load cells
are extremely stiff and provide no compressive cushion to bring the ram through bottom dead
center if you over-adjust.
Failure to comply with these instructions could result in property damage.
6.
Lower the ram 0.003” or 0.004” (0.076–0.102 mm) with your press’s shut height adjustment, lock
the shut height, and cycle the press again.
7.
Repeat step 6 until the readout on your calibration unit indicates that contact on the load cell(s) is
being made at BDC.
8.
Continue to cycle the press and adjust the ram downward, locking the shut height after each
adjustment, until the Load LED displays on your calibration unit show the tonnage you
determined in step 4.
9.
If you are using two load cells, make sure both Load LED readouts display equal tonnage. If
Load readings disagree by more than ± 2%, add shim stock to the load cell that shows the lower
tonnage. Cycle the press, and recheck tonnage. Continue to add shim stock until the tonnage
shown in both Load displays is equal.
10.
Check to make sure that the load cells, shims, and parallels do not move during calibration, using
adhesive tape or equivalent, if necessary, to hold them in place. If you reposition any of these
items, make sure to double-check the tonnage shown on the Load LED display(s) on the
calibration kit before proceeding with the next adjustment.
Setting Full-scale Tonnage on Your AutoSetPAC
NOTICE
Wintriss recommends that AutoSetPAC be calibrated at the tonnage at which the press will
normally operate. If you usually run between 60-90% of press capacity, calibrate at 75% of
capacity. For example, if the press is a 100-ton press, calibrate for 75 tons. Do not calibrate at
less than 50% of press capacity.
To set your AutoSetPAC to the full-scale tonnage of your press, do the following:
Содержание AutoSet PAC 120 VAC
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