00197787-02_SI_SIPLACE_HeadVerification_EN - 第46页

6 Description of the test results 6.6 Component sensor calibration 46 Software Manual SIPLACE Head Verification 03/2018 6.6 Component sensor calibration 6.6.1 Measurement principle The Component sensor calibration measur…

6 Description of the test results

6.5 CS Sensor voltage and z-heights

Software Manual SIPLACE Head Verification 03/2018 45

6.5.3 Interpretation of the results obtained

‘Component sensor voltage’ error if lower tolerance limit not reached

Cause Solution

Prism at sensor polluted ► Clean the prism using a cleaning stick and isopropanol.

Prism at sensor damaged ► Check the lens by holding a sheet of white paper

between the transmitter and the receiver. If no red dot is

shown or the dot appears defused, the sensor or the

prism is damaged and the component sensor needs to

be replaced.

NOTICE

If the ‘component sensor voltage value’ check in the head ‘Single Functions’ is OK, the er-

ror can be ignored.

‘Component sensor voltage’ error if upper tolerance limit exceeded

Cause Solution

Component sensor electric de-

fective

► Replace the component sensor.

‘Z-delta’, ‘Z-down’ and ‘Z-up’ errors for all segments

Cause Solution

The driver (jaws) of the Z-axis has

been displaced or moved.

► CPP: Replace the front plate with the Z-motor assembly.

► C&P20A:

- Readjust the jaws.

- Replace the Z-axis assembly.

► C&P20P: Replace the z-unit assembly.

Component sensor defective or

polluted

► Clean or replace the component sensor.

‘Z-delta’, ‘Z-down’ and ‘Z-up’ errors for individual segments

Cause Solution

Bad nozzle seat ► Replace the nozzle.

► Visually inspect the DP and replace it if necessary.

DP drive bearing displaced ► Replace the DP.

DP linear / segment guide dis-

placed

► C&P20P/A: Replace the DP.

► CPP: Replace the segment guide.

6 Description of the test results

6.6 Component sensor calibration

46 Software Manual SIPLACE Head Verification 03/2018

6.6 Component sensor calibration

6.6.1 Measurement principle

The Component sensor calibration measurement checks the degree to which the Z height of the

nozzle changes when the Z-axis is moved downwards in the ‘axes overlapping’ mode, during the

star rotation and when the component sensor is triggered. When the component sensor switches,

the measurement checks whether the front surface of the nozzle tip triggers the component sensor

eccentrically when the axes overlap. The corner of the front nozzle surface moves slightly down-

wards during a rotation around the star in the lower angles (as in the case of jaw stop left and jaw

stop right). This can also be described as a diagonal tilting effect. This Z-axis change is recorded

during this measurement at the component sensor.

6.6.2 Measurement result

Fig.38: Result view – Component sensor calibration

1 Measured Segment

2 Calibration value calculated from the change in the Z-axis travel path in axes overlapping

mode (star axis to Z-axis) until the component sensor is triggered.

6.6.3 Interpretation of the results obtained

‘Calibration value’ error for all segments

Cause Solution

Component sensor fitted at a slant ► Readjust the component sensor.

Component sensor lens defective ► Replace the component sensor.

Component sensor lens dirty ► Clean the sensor with isopropyl alcohol.

‘Calibration value’ error for individual segments

► Check the nozzles.

6 Description of the test results

6.7 DP positioning time

Software Manual SIPLACE Head Verification 03/2018 47

6.7 DP positioning time

6.7.1 Measurement principle

The DP positioning time is used to verify the encoder disk and read head of the TH D-Axis.

The test is split up in two sections:

●

Firstly, the D-axis is positioned forwards and backwards by 90° steps 40 times. For each step,

the time is measured it takes the axis to reach the position.

●

Secondly, the sequence is repeated using 90° steps.

6.7.2 Measurement result

Fig.39: Result view - DP positioning time

1 Minimum, maximum and average time determined when stepping the axis by 90° / 180°.

2 Graph showing the DP positioning by 90° steps.

3 Graph showing the DP positioning by 180° steps.

6.7.3 Interpretation of the results obtained

‘DP positioning time’ error

Cause Solution

Encoder disk or read polluted ► Clean the encoder disk / read head (Q1/2018).

Encoder disk or read defective ► Replace the ‘Trick a. feather unit/P+P module

(Q1/2018)’.

► Replace the P&P module.

► Send the P&P module to ASM for customer specific re-

pair.