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SIPLACE Head V erification User Manual Edition 01/2015 71 8. The Radial runout 360° [µm] value describes the co mplete change in n ozzle length determined during s egment rotati on across 360°. T his value is calculated …

SIPLACE Head Verification

User Manual Edition 01/2015

Figure 48: ZDS sensor values_2 results

Legend:

1. Segment measured

2. Analog voltage value for the Z-down light barrier receiver Sensor value [mV] at a segment

setting of 0°, during the LED brightness adjustment as receiver (4) with the value LED gain.

This voltage value shows the distance between the light barrier and the switching ring at a DP

setting of 0°. A type of light-dark determination (adjustment) is performed. This value must be

within a plausible tolerance (in our example 2000..5000mV)!

3. Lowest analog voltage value determined Min value [mV] for the Z-down light barrier during a

complete rotation of the segment by 360°. This value illustrates the largest distance between

the Z-down light barrier and the switching ring. You can also say that the light of the light

barrier is darker when the distance is greater. This value must be within a plausible tolerance

(in our example 2000..5000mV)!

Highest analog voltage value determined Max value [mV] for the Z-down light barrier during a

complete rotation of the segment by 360°. This value illustrates the smallest distance between

the Z-down light barrier and the switching ring. You can also say that light of the light barrier is

brighter when the distance is smaller. This value must be within a plausible tolerance (in our

example 2000..5000mV)!

4. Brightness value for Z-down light barrier LED (transmitter) during referencing. The LED gain

reflects the brightness of the LED which must be shown in the result of the Z-down light barrier

measurement Sensor value [mV] (2). The LED gain value must be within a plausible

tolerance (in our example 90..200).

5. The Spring resp. low [V/m] value describes the analog voltage value for the Z-down light

barrier, when the Z axis moves towards the conveyor edge, at a DP angle of 0°, and the light

barrier is switched by the switching ring. This value also stands for the distance between the

Z-down light barrier and the switching ring at this point, when the spring force is applied to the

switching ring. This value must be within a plausible tolerance (in our example -5300..-

2000V/m)!

6. The Spring resp. high [V/m] value describes the analog voltage value for the Z-down light

barrier, when the Z axis moves towards the conveyor edge with full force, at a DP angle of 0°,

and the segment spring is fully compressed. This value stands for a distance between the Z-

down light barrier and the switching ring at this position, when maximum force is applied to the

segment by the Z axis. This distance between the Z-down light barrier and the switching ring

is determined here.This value must be within a plausible tolerance (in our example -5600..-

3600V/m)!

7. The Radial runout 5° [µm] value describes the highest change in nozzle length determined

during segment rotation across 360° in a 5° area. The Radial runout 5° [µm] value specified

is the largest change in nozzle length which can be identified within a rotation of 5°. This value

must be within a plausible tolerance (in our example 0..20µm)!

SIPLACE Head Verification

User Manual Edition 01/2015

8. The Radial runout 360° [µm] value describes the complete change in nozzle length

determined during segment rotation across 360°. This value is calculated by finding the

difference between the smallest (shortest measurement) nozzle length and the largest

(longest measurement) nozzle length found during rotation across the entire 360°. This value

must be within a plausible tolerance (in our example 0..100µm)!

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

10. The Variation 5° [µm] value is the highest increase in voltage for the Z-down light barrier

during rotation of the segment in an area of 5°, while rotating around the full 360°

11. The Variation 360° [µm] value is the voltage difference for the Z-down light barrier by rotation

of the segment around the full 360°. This difference is calculated by finding the greatest

analog voltage value Max value [mV] for the Z-down light barrier and the smallest analog

voltage value Min value [mV] during a complete rotation of the DP around the full 360°.

12. This diagram illustrates the Sensor value [mV] (2) / Min value [mV] (3) / Max value [mV] (3)

values for the segments.

Blue line  Sensor value [mV]

Light green line  Min value [mV]

Dark green line  Max value [mV]

Red border  Min and max tolerances (in our case 2000..5000mV)

Use the button to zoom in on the diagram.

13. This diagram illustrates the Radial runout 5° [µm] (7) / Radial runout 360° [µm] (8) values

for the segments.

Blue line  Radial runout 360° [µm]

Green line  Radial runout 5° [µm]

Blue border  Tolerances for "Radial runout 360° min and max" (in our case 0…100µm)

Green border  Tolerances for "Radial runout 5° min and max" (in our case 0…20µm)

Use the button to zoom in on the diagram.

14. This diagram shows the Spring response low [V/m] (5) value.

Blue line  Spring response low [V/m]

Red border  Tolerances for "Spring response low [V/m]" (in our case -2000..-5300V/m)

Use the button to zoom in on the diagram.

15. This diagram shows the LED gain value.

Blue line  LED gain

Red border  Tolerances for "LED gain" (in our case 90..200)

16. This diagram shows the Sensor Value [mV] values as a curve for each segment during the

360° rotation.

Blue lines  Each segment has its own curve, illustrating the path of the analog voltage

values for the Z-down light barrier during the 360° rotation. The analog voltage value is an

indication for the distance between the switching ring and the light barrier at each position

during the rotation. Due to the light-dark recognition, contaminants (dust) can be detected on

the black surface of the switching ring.

SIPLACE Head Verification

User Manual Edition 01/2015

4.13.3 Explanation of Measurement Results Using Results PDF

These results can be seen if you scroll down the "Summary" menu or generate a results PDF!

Figure 49: Result PDF for ZDS sensor values_1

Figure 50: Result PDF for ZDS sensor values_2

Segment 7 shows that the "Radial runout 360°" value of 103µm (1) is significantly above the

permissible threshold. This means that the nozzle length during a complete 360° rotation of the

segment is inconsistent and that the nozzle is not reliably positioned on the nozzle seat.

In addition, this result can be related to the "Sensor value [mV]" for segment 7 (6). The lowest "Min

Value [mV]" for the entire measurement, which reflects the greatest distance between the Z-down light

barrier and the switching ring (brightest measurement) is around a rotary angle of approx. 75° (7) at

segment 7. This indicates that there may be a contamination with dust particles (white particles,

therefore a light measurement).

The highest measured "Max value [mV]" can be found at segment 2 (4). The diagram shows that the

value at segment 2 was reached roughly at an angle of approx. 210° (5). This is therefore the smallest

distance measured from the Z-down light barrier to the switching ring. Due to the dark measurement

performed for this area, there may well be damage to the switching ring.

Light-dark measurements (fluctuations in analog voltage value for Z-down light barrier) can also be

caused by an inconsistency (incorrectly fitted switching ring) of the switching ring.

At segment 20 (2), the "Radial runout 5°" measurement resulted in an impermissible nozzle length

increase within 5°. This may be due to a dirty nozzle.