SPEED COMPENSATION
Speed compensation offset angle is the number of degrees of advance per 100 SPM increase in press speed over the
programmed starting speed.
Example 1: Top Stop
1. Program the speed compensation starting speed S to the slowest operating speed of the press. eg. 50spm
2. Set the speed compensation offset angle A to zero.
3. Run the press at its slowest operating speed and program the top stop output so the press stops at the top.
4. Set the press to its maximum operating speed. eg. 125 spm
5. Run the press at its maximum operating speed (keeping the top stop window the same) and note the number of
degrees over top that the press stops. eg. 23°
6. Divide the difference in stopping degrees (23°) by the difference in speed (75spm) and multiply by 100. This is
your speed compensation offset angle per 100 spm. Round off if necessary.
eg. (23 / 75) x 100 = 31° per 100spm
7. Program the angle A to 31°
Example 2: Servo Feed Initiate
Follow steps 1 and 2 above
3. Run the press at the slowest operating speed and program the feed initiate PLS output to feed properly.
eg. F240-T270
4. Set the press to its maximum operating speed. eg. 125spm
5. Advance the feed initiate PLS output to feed properly at this speed. eg. F217-T253
6. Divide the difference in PLS output settings (F240 - F217 = 23°), by the difference in speed (125 - 50 = 75spm)
7. Program the angle A to 31°.
8. Reprogram the feed initiate PLS output for the slowest press speed. eg. F240-T270
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General