00197787-02_SI_SIPLACE_HeadVerification_EN - 第44页

6 Description of the test results 6.5 CS Sensor voltage and z-heights 44 Software Manual SIPLACE Head Verification 03/2018 6.5 CS Sensor voltage and z-heights 6.5.1 Measurement principle The CS Sensor voltage and z-heigh…

6 Description of the test results

6.4 Anti-glare shield mounting

Software Manual SIPLACE Head Verification 03/2018 43

6.4.3 Interpretation of the results obtained

‘Mounting variation’ error for all segments

Cause Solution

Incorrect position of the Z-axis bottom light bar-

rier

► Readjust the Z-axis bottom light barrier

position.

Z-axis bottom light barrier defective (all values

shown in Measure 1 - Measure 4 are below the

limit).

► Replace the complete Z-axis unit including

the bottom light barrier.

Z-axis motor or linear guide defective. ► Replace the complete Z-axis unit.

‘Mounting variation’ error for individual segments

Cause Solution

Anti-glare shield polluted, with fractures or sit-

ting improperly at the DP station.

► Realign or replace the anti-glare shield.

‘Measure 1-4’ error for multiple segments (not concave / not convex)

Cause Solution

Cable breakage at Z-axis down light barrier bot-

tom.

► Replace the Z-axis down light barrier bot-

tom.

6 Description of the test results

6.5 CS Sensor voltage and z-heights

44 Software Manual SIPLACE Head Verification 03/2018

6.5 CS Sensor voltage and z-heights

6.5.1 Measurement principle

The CS Sensor voltage and z-heights measurement is used to determine the function of the

component sensor and the Z-axis values during the upward and downward movement.

The component sensor function is checked by verifying the analog voltage value in its uncovered

state to be within the defined limits. Following a height reference run every segment is moved down

and back up again whereby it is checked at which position the nozzle interrupts and releases the

light barrier.

6.5.2 Measurement result

Fig.37: Result view – CS Sensor voltage and z-heights measurement

1 Measured Segment

2 Position that is determined when the light barrier gets interrupted during the downward

movement (Z-down) and released during the upward movement (Z-up).

3 Z-delta shows the difference (hysteresis) between Z-down and Z-up:

●

Z-delta = Z-down – Z-up

4 Results display indicating if the values are within (green tick) or outside (red cross) the lim-

its.

●

Variation Z up and Variation Z down show the difference between the largest and

smallest value determined:

Variation Z up = Z-up

max

–Z-up

min

Variation Z up = Z-up

max

– Z-up

min

●

BE sensor voltage shows the analog voltage measured.

6 Graph showing the Z-down (blue) and Z-up (green) values for each segment.

7 Graph showing the Z-delta value (hysteresis) for each segment.

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.