Atlas Copco ACTA 3000

Programming
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Statistical Parameter 2
This parameter is displayed on the right of the ACTA 3000 custom measurement
display, below the statistical field for parameter 1. This parameter displays real-
time statistical calculations based on your selection in Parameter 2.
When this parameter is opened a pop-up dialog box appears and one of the
following options can be selected:
1. X, σ Mean and sigma for parameter 2.
2. R, None Range for parameter 2.
3. X-3σ, X+3σ, Negative and positive confidence interval for parameter
2.
4. Min., Max. Min. and Max. values for parameter 2.
5. Var., Diff. % Variance and difference in percent between parameter 2
and the controller value for parameter 2. “Diff %” is only
valid and displayed when parameter 2 is torque, angle,
controller torque or controller angle.
6. CP, CPK CP and CPK for parameter 2.
7. X last, R last Last group X-bar and last group range for parameter 2.
Displayed only when at least a full group exists.
8. CAM, None CAM for parameter 2. Displayed only when there are at
least 6 full groups.
9. Contr., Diff. Controller value and difference between parameter 2 and
the controller value for parameter 2. “Contr.” and “Diff.”
are only valid and displayed when parameter 2 is torque,
angle, controller torque or controller angle.
0. None, None No statistical parameters are selected.