Wintriss autoset 1500, User Manual

Page: 66 / 102

1137200 AutoSet User Manual
3-18 Calibration
7.
Turn the adjustment screw on potentiometer R144 counterclockwise and cycle the press
again. Compare tonnages on your AutoSet and on the calibration unit. Continue adjusting
the potentiometer downward and cycling the press until the tonnage on your AutoSet is
identical to the tonnage on the calibration unit.
8.
Cycle the press and compare the reading in the Right (AutoSet 1500) or Right Rear
(AutoSet 1504) Load LED display with the tonnage shown on the calibration unit, and
repeat steps 4 through 7, making adjustments on potentiometer R133 and jumper J116.
9.
If you are calibrating an AutoSet 1504 unit, repeat steps 4 through 7 for the Left Front and
Right Front strain links. Refer to Table 3-5 for processor board labels identifying the gain
potentiometer and high/low gain jumper for each of these strain links.
10.
Move the lever on switch S102 from “OPERATE” to “CALFACTOR.”
The message “CAL” appears in the Load LED displays, and numbers between 40 and 960
are shown in the Setpoints LED displays. These numbers are the “calfactors,” or
calibration settings, for your AutoSet.
11.
Record the calfactor and high/low gain jumper setting for each strain link channel on your
AutoSet, two pairs of settings for AutoSet 1500, four pairs of settings for AutoSet 1504.
If you need to replace a processor board, you can use these settings to calibrate the new
board without repeating the lengthy calibration process documented here. Simply set
switch S102 to “CALIBRATE,” move high/low gain jumpers to the correct position, and
adjust each potentiometer to the calfactor you have recorded.
The AutoSet label on the inside cover of the AutoSet enclosure provides space to record
calfactor and high/low gain jumper settings, as shown in Figure 3-10, page 3-19.
When you cycle the press, the Load LED displays may flash, indicating that tonnage is
now over 120% of full scale. To clear this error, press the RESET button or turn the
DISPLAY switch to the RESET position, holding the button or switch for less than two
seconds. After you reset the unit, the reading shown in the Load LED display may be
much higher than the tonnage shown on your calibration unit.
If the Load LED displays continue to flash as you make potentiometer adjustments and
cycle the press, press the RESET button or turn the DISPLAY switch to the RESET
position to reset the unit.
NOTICE
NOTICE