Wintriss AutoSet PAC 120 VAC, Руководство пользователя

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1101600 AutoSetPAC User Manual
84 Chapter 3 Initialization and Calibration
Figure 3-20.
Load Cell Gain Adjustment Potentiometer with Adjustment Screw
15. If you are using one load cell for calibration, turn the screw on gain adjustment potentiometer
R17 clockwise or counterclockwise until the left channel Load LED display reads 157±2.
If you are using two load cells for calibration, turn the screws on both gain adjustment
potentiometers (R17 and R25) until the displays on both channels read 157±2.
To calibrate the press in metric tons, set the left channel to 173±2 for one load cell or both left
and right channels to 173±2 for two load cells.
16. Move the lever on switch S3 or S2 to the “OPERATE” position. Both left and right channel Load
LED displays should now read zero (0) tons.
17. Locate the Percent Tolerance Selector dial, labelled “S2” on old-style boards (see Figure 3-15),
“S7” on new-style boards (see Figure 3-16).
Locate the Percent Repeatability Selector dial, labelled “S8” on old-style boards (see Figure
3-15), “S6” on new-style boards (see Figure 3-16).
Set both dials to the zero (0) position, then reset the calibration unit by pressing the RESET
button (AutoSet 2-Channel) or turning the DISPLAY switch to “RESET” (AutoSet 2-Channel
Plus) and holding for at least two seconds.
Setting both percent tolerance selector dials to zero (0) disables AutoSet’s automatic setpoint
function.
NOTICE
Setpoints LED displays will show numeric readings after the unit is reset. Ignore these readings.
Only the Load LED displays are used in calibration.
Applying Full-scale Tonnage to the Calibration Kit
To apply full-scale tonnage to the AutoSet 2-Channel calibration kit, perform the following steps:
1.
Make sure that the die is removed from the press and that any bolster/bed openings or ram holes
are covered with a plate or plates rigid enough to prevent flexing. Wintriss strongly recommends
using 1”- to 2”-thick steel plates, or parallels, above and below the load cells to distribute the load
evenly on the bed and ram. Even load distribution helps to improve calibration accuracy and
linearity (see Checking Linearity , page 91).
2. Bring the ram to bottom dead center (BDC) and turn off power to the press. Use a dial indicator,
if necessary, to make sure that the press is at 180°.
3. Place the load cell(s) and parallels under the connecting rod(s). Make sure load cells are centered
under the connecting rods to ensure even load distribution on the press frame.