Post View Torque Analysis
The post view torque analysis is used to display the consequences of changing post view torque limits based on historical data. The positions of the boxes is given by the controller.
There are two result sections displayed after running the analysis.
Post view torque - The results display the trace view of the results generated.
Overview and Results - Displays further data and information of the results generated.
Analyze Trace Data
Place the cursor on the trace to view data of the torque and angle of the trace.
Zoom and Draw Box
Select the Zoom or Draw box option button.
Zoom - Draw a box in the trace area to zoom into a specific selection.
Box - Draw a box in the trace area to create a box displaying the minimum and maximum values of the area selected. The user determines the identification boxes positions on the reference trace. The boxes are used for identification of deviating traces. Place a box in the trace to see the intruding traces being converted from OK into NOK.
It is possible to draw up to ten different boxes in the analysis field. The boxes are colored to match the box results. Move between each box by selecting the Box option button. Select the red cross (x) next to the box to remove it.
Overview
The overview section will show a summary of the results generated.
Results
List of results are shown, see the section Working with the Results for further information.
Open row to view further information and specific data.
Place the cursor on the trace to view data of the torque and angle of the trace.
Draw a box in the trace area to zoom into a specific selection. Select Reset zoom to go back to original view.
Torque analysis can be carried out for PF4000 and PF6000 controllers. The PF6000 controller offers two algorithm options, which can be selected from the Filter dropdown menu.
Box Calculation Logic
A box is defined by
Starting angle(begin angle)
Interval(end Angle)
Torque value
The box’s position is calculated relative to the Rundown Complete Angle. This angle is retrieved from the result information. If it is not found, and the program is multi-step, the system searches for the angle where the rundown step occurs.
For Catla/Legacy programs, the box is drawn backward (to the right) from the start angle.
For multi-step programs, the box is drawn backward (to the left) from the start angle.
For Multistep programs, we use Rundown Complete Angle instead of the Shut-off Angle (which is used in the controller) since the shut-off angle is not sent to the controller.
There could be cases where the shut-off angle and rundown angle are not the same.
Only one set of boxes can be used for multi-step programs, even if you can configure PVT for multiple steps.
