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SIPLACE Head V erification User Manual Edition 01/2015 40 Figure 26 : Air & va cuum with head sensors 3 result Legend: 1. Segment m easured 2. Value determ ined Vacuum open [mbar]  This value is determ ined when the…

SIPLACE Head Verification

User Manual Edition 01/2015

4.6.2 Explanation of Measurement Results in Progress Menu

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

Figure 24: Air & vacuum with head sensors 1 result

Figure 25: Air & vacuum with head sensors 2 result

SIPLACE Head Verification

User Manual Edition 01/2015

Figure 26: Air & vacuum with head sensors 3 result

Legend:

1. Segment measured

2. Value determined Vacuum open [mbar]

 This value is determined when the Z axis moves downwards with the travel profile TP5 and

while the vacuum is measured at the open nozzle. This value must be within a plausible

tolerance (in this case for the CPP head with nozzle 2057  -800…400mbar).

3. Value determined Vacuum closed [mbar]

 This value is determined when the Z axis meets the component (in this measurement at the

height reference run position), the light barrier Z-down end position signal has been emitted

and the nozzle is understood to be closed. This is an absolute value and must not be within a

tolerance!

4. The Vacuum delta [mbar] value is calculated by finding the difference between the Vacuum

closed [mbar] (3) values and the Vacuum open [mbar] (2) value. Since the threshold value

for Vacuum open [mbar] is prescribed by the head and nozzle type parameters and the

Vacuum closed [mbar] value is an actual vacuum value at the closed nozzle during pickup,

the Vacuum delta [mbar] value is also within a defined tolerance.

(in this case for CPP head with nozzle 2057  230…450mbar).

Vacuum delta [mbar] = Vacuum closed [mbar] – Vacuum open [mbar]

5. The Open dev. [mbar] will not be explained further and is not currently used for the head

verification.

6. The Holding (nozzle open) [mbar] describes the value measured at the vacuum present at

an open nozzle during rotation of the complete holding circuit.

This value depends on the use of a vacuum pump and must also be within a plausible

tolerance.

(in this case for CPP head with nozzle 2057  -120..-40mbar)

7. This shows the vacuum values determined for the closed nozzle during simulated pickup

(either calibration component or height reference run plate) at the moment of light barrier Z-

down action (end position signal) in the pickup angles 0°, 90°, 180° and 270°. These "Vacuum

0°"-"Vacuum 270°" values provide an overview of the vacuum at different pickup and

placement angles.

8. The Delta vac. 0-270° [mbar] value is calculated by finding the difference between the lowest

and highest values from the "Vacuum 0°"-"Vacuum 270°" (7) measurement.

If this value is exceptionally high, compared to other segments, this indicates that the segment

has a problem at one of the angles. The angle overview (7) helps you to identify where the

SIPLACE Head Verification

User Manual Edition 01/2015

problem is.The dispersion should be as small as possible, as this shows a constant vacuum

behavior across the 360°.

Delta vac. 0-270° [mbar] = max. Vacuum 0°-270° [mbar] - min. Vacuum 0°-270° [mbar]

9. During calibration component pickup, the Vacuum calib part [mbar] value is used as a

reference value for the vacuum at closed nozzle pickup. The value must be within a tolerance

of -950..-770mbar.

10. The Delta calib-closed [mbar] is calculated by finding the difference between the Vacuum

Calib part [mbar] (9) and the Vacuum closed [mbar] (3) values. This value is used as a

comparative value to check whether the vacuum value during pickup is correct and whether

the system is working reliably.

Delta calib-closed [mbar] = Vacuum calib part [mbar] (9) – Vacuum closed [mbar] (3)

11. The Calib part dev. [mbar] value describes how reliably the vacuum is reduced at the nozzle.

12. The Air [mbar] measurement checks the air blast pressure which is actually at the open

nozzle when the gripper is switched on with 200 mbar blast pressure.

The value must be within a tolerance of 140..220mbar.

13. After switching off the air blast, the pressure is measured again at the nozzle tip. This value

Vacuum zero [mbar] shows how the air blast pressure has been reduced at the nozzle tip.

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

15. This diagram illustrates the "Vacuum open [mbar]" values for the segments.

Blue line  Vacuum open [mbar]

Red border  Min and max tolerances (in our case -680..-400mbar)