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SIPLACE Head V erification User Manual Edition 01/2015 49 4.8.2 Explanation of Measurement Results in "Progress" Menu After com pletion of the measurem ent, the following res ults appear in the " Progress&…

SIPLACE Head Verification

User Manual Edition 01/2015

4.8 "Head Endurance Run LS" Measurement

The following tools are required for these measurements:

CPP: 12x nozzle type 2057 03070280-01 (calibration nozzle)

CP20P: 20x nozzle type 4235 03098748-01 (calibration nozzle)

CP20A: 20x nozzle type 1235 03015222-01 (calibration nozzle)

4.8.1 Explanation of Measurement – Procedure

The "Head endurance run LB" measurement is used to determine the actual position deviations of the

Z axis and the minimum and maximum path of the segments during pickup and placement. The DP

drive positioning times for a rotation from 0° to 180° are documented and can be used to evaluate the

DP quality.

The results of these measurements provide feedback about the following sources of errors:

1. Difficult movement of DP drives

2. State of Z motor linear guides

3. State of DP/segment linear guides

4. Assembly and state of cover switching ring

5. State of Z-down light barrier

Measurement steps:

1. The head is positioned over the height reference run position on the fixed conveyor side.

2. Segment 1 is rotated by the star into the placement position.

3. The Z axis is moved downwards using travel profile TP5 [TP5 LIGHT BARRIER] and the

pickup procedure is simulated. As soon as the Z-down light barrier issues the end position

signal, the end signal position value will be saved as Z Pick [µm].

4. During the downwards movement, the DP is also positioned at 0°. This gives a positioning

time of DP time [ms].

5. The Z axis now moves back up again with travel profile TP1.

6. The Z axis is moved downwards for placement using travel profile TP5 [TP5 LIGHT

BARRIER]. As soon as the Z-down light barrier issues the end position signal, the end signal

position value will be saved as Z Place [µm].

7. During the downwards movement, the DP is also positioned at 180°. This gives a positioning

time of DP time [ms].

8. The Z axis now moves back up again with travel profile TP1.

9. This procedure is now executed 50x for segment 1, which means a total of 100x Z axis

movements (50x pickup / 50x place) and also 100x DP positioning times.

10. All pickup positions Z-Pick [µm] are saved internally and the minimum (Z min pick [µm]) and

maximum (Z max pick [µm]) positions are used for the analysis.

11. All placement positions Z-Place [µm] are saved internally and the minimum (Z min place

[µm]) and maximum (Z max place [µm]) positions are used for the analysis.

12. The positioning times for rotation of each segment by 180° are also analyzed, to provide a

minimum (Min DP Time [ms]) and maximum (Max DP Time [ms]) value for each segment.

13. The star now turns segment 2 into the placement position

14. Measurements 3-13 are now performed for all other segments.

SIPLACE Head Verification

User Manual Edition 01/2015

4.8.2 Explanation of Measurement Results in "Progress" Menu

After completion of the measurement, the following results appear in the "Progress" menu:

Figure 32: Head endurance run LS _1 result

Figure 33: Head endurance run LS _2 result

Legend:

1. Segment measured

2. Total number of cycles

3. Value determined Z down delta pick [µm]

 This value is calculated by finding the difference between the lowest (Z min pick [µm] (11))

and the highest (Z max pick [µm] (12)) Z axis positioning value after switching the Z-down

light barrier during the pickup cycles.

This value must be within a plausible tolerance (in this case 0..150µm)!

Z down delta pick [µm] = Z max pick [µm] - Z min pick [µm]

4. Value determined Z down delta place [µm]

 This value is calculated by finding the difference between the lowest (Z min place [µm]

(13)) and the highest (Z max place [µm] (14)) Z axis positioning value after switching the Z-

down light barrier during the pickup cycles.

SIPLACE Head Verification

User Manual Edition 01/2015

This value must be within a plausible tolerance (in this case 0..150µm)!

Z down delta place [µm] = Z max place [µm] - Z min place [µm]

5. The Min DP time [ms] value is the shortest DP positioning time reached during positioning at

180°. This value must be within a plausible tolerance (in this case 100..250µm)!

6. The Max DP time [ms] value is the longest DP positioning time reached during positioning at

180°. This value must be within a plausible tolerance (in this case 100..250µm)!

7. Results display for number of successful strokes

8. Number of errors during 50x total cycles.

9. Results display (OK  green tick / NOK  red X)

10. Number of individual Z axis movements (in our case 50x down + 50x up = 100)

11. Z min pick [µm] is the lowest Z axis positioning value achieved after switching the Z-down

light barrier during the pickup cycles.This value is used to calculate the Z down delta pick

[µm] (3) value.

12. Z max pick [µm] is the highest Z axis positioning value achieved after switching the Z-down

light barrier during the pickup cycles.This value is used to calculate the Z down delta pick

[µm] (3) value.

13. Z min place [µm] is the lowest Z axis positioning value achieved after switching the Z-down

light barrier during the placement cycles.This value is used to calculate the Z down delta

place [µm] (4) value.

14. Z max place [µm] is the highest Z axis positioning value achieved after switching the Z-down

light barrier during the placement cycles.This value is used to calculate the Z down delta

place [µm] (4) value.

15. This diagram illustrates the "Z down delta pick [µm] (3)" values for the segments.

Blue line  Z down delta pick [µm]

Red border  Min and max tolerances (in our case 0..150µm)