00900194-01_SM_ASM ProcessLens_Dual-lane_EN.pdf - 第29页
3 Replacing spare parts 3.3 Encoder Service Manual ASM ProcessLens Dual-lane 09/2018 29 ► Check the gap between the encoder reader (1) and the scale bar (2) by using the spacer (3) provided. ► The gap between the enco…
3 Replacing spare parts
3.3 Encoder
28 Service Manual ASM ProcessLens Dual-lane 09/2018
3.3 Encoder
3.3.1 Replacing the encoder reader at the x, y and z gantry
Parts
03122960-xx Tonic encoder interface 0.1UM
(Encoder reader X, Y,Z)
Equipment and tools
●
Allen key size 2.0
●
Spacer 2.1mm
Requirements
●
Machine is switched off.
Removal
► Unscrew and remove the two screws(1) using an
Allen T shaped Allen key size 2.0.
► Carefully pull out the encoder reader(2).
The scale of the scale bars
CAUTION!
Fingerprints or scratches damage the scale
bars(3) which then need to be exchanged.
Do not touch or scratch the scale of the scale
bars.
Be careful when pulling out the reader and when
putting it back again.
.
► Change the reader including the encoder(1) and
all cables.
► Replace the encoder and the reader.
3 Replacing spare parts
3.3 Encoder
Service Manual ASM ProcessLens Dual-lane 09/2018 29
► Check the gap between the encoder reader(1)
and the scale bar(2) by using the spacer(3)
provided.
► The gap between the encoder reader and the
scale bar must be 2.1 mm.
► Calibrate the new reader. See the external Power
Point file “Y1Y2 ENC install & adjust procedure”.
► Move the gantry slowly the whole travel range
backwards. Whilst doing that check the light at
the indicator.
► If the lights are not within the color range the
holder needs adjustments. See 3.3.2 "Color code
for the encoder readers" [}29].
► Proceed the same way with all other encoder
readers.
Installation
Follow the removal instructions in reverse order for installation.
3.3.2 Color code for the encoder readers
Color Indication Adjustment requirement
Purple Optimum set-up No
Blue Good set-up No
Green Good set-up No
Orange Acceptable set-up but below recommendation level. Yes, angle and gap.
Red Poor set-up, signal maybe too low for reliable operation Yes, angle and gap.
3 Replacing spare parts
3.3 Encoder
30 Service Manual ASM ProcessLens Dual-lane 09/2018
3.3.3 Checking the alignment of the encoder reader of the Y gantry
Whenever the encoder readers have been removed, the readers need to be realigned.
Equipment and tools
●
Flexures
Requirements
●
Machine is switched on.
●
Optical head is centered on the X position.
Checking the alignment
Position of the flexures and the optical head
1. Optical head
2. Flexures
► Install the flexures(2) at the gantry.
NOTICE!
Flexures
Without the flexures the gantry can be moved in
slightly different positions. The flexures help to
hold the gantry in the same position so that both
sides are align to each other.
.
► Start the Process "Gantry Index ParallelTool".
► Click on the Init button to initialize the gantry.
► Press the Start Gantry encoder TEST button.
► Slowly push the gantry backwards.
NOTICE!
Test results
This needs to be done within 5 seconds after the
button has been pushed. Otherwise the measur-
ing will not take place.
.
► Press the "Stop the Gantry Encoder" button.
► Repeat this at least 10 x times.
► The specified range is +/- 1000.
► If any of the 10 X results differ from the specified
range go back to adjust the brackets and repeat
the check.
CAUTION
Installed flexures
Installed flexures cause damage to the machine when in operation mode.
Remove flexures at the end of the alignment test.