00198829-01_SM_X-Series-S_Hxxxx_EN - 第109页
6 Gantries 6.3 X and Y axis Service Manual SIPLACE X-Series S (from Hxxxx) 01/2021 109 6.3.2 Replacing the Y axis incremental encoder Parts, equipment and tools ● Select the correct incremental encoder: Machine Increment…
6 Gantries
6.3 X and Y axis
108 Service Manual SIPLACE X-Series S (from Hxxxx) 01/2021
Fig.136: Casting marks on the incremental encoder
The incremental encoder must be aligned
with a gap of 0.4mm
(golden scale) or
0.75mm
(black-white scale) to the scale.
Use the corresponding thickness gauge
(plastic).
► Align the incremental encoder. Pay at-
tention to the following points:
– Set the exact height of the scale.
– Align the incremental encoder, us-
ing the two casting marks (arrows)
,
which mark the read area.
– Align the incremental encoder paral-
lel to the scale. The gap at the top
and bottom must be the same size.
► Tighten the fastening screws.
► Reconnect to the electricity supply (connector X14 or X15 on head interface).
CAUTION
Check how the cables are run!
► Make sure that the axes can be moved without damaging the cables.
► Fasten the cables with cable ties.
► Move the gantry into the end stopper and check that the buffer does not come into contact
with the cable.
► Check the track signals with the test device (see 6.3.4 "Track Signals and Zero
Pulse" [}111]).
6 Gantries
6.3 X and Y axis
Service Manual SIPLACE X-Series S (from Hxxxx) 01/2021 109
6.3.2 Replacing the Y axis incremental encoder
Parts, equipment and tools
●
Select the correct incremental encoder:
Machine Incremental encoder (read head)
SIPLACE X4i S, X4 S, X3 S, X2 S MS22/25 Y axis [03094996‑xx] (including plastic
thickness gauge)
SIPLACE X4i S micron, X4 S micron
SIPLACE CA PLP
MS30 Y axis [03102065‑xx]
●
If needed, mounting bracket for Y axis sensor [03086842-xx]
●
For MS22/25 incremental encoder: test device PG1-I [03102699‑xx]
●
For MS20/30/35 incremental encoder: test device PG-U [03071361‑xx] from FS02 (see also
technical information "Checking the track signals at the X and Y axes" [DE:TI2019‑02D04]
[EN:TI2019‑02E04])
●
Ethanol
Isopropanol – IPA can be used as an alternative.
Overview
Fig.137: Overview of incremental encoder
1. Fastening screws (3x) for holder
2. Holder
3. Incremental encoder
4. Screws (2x) fastening the incremental
encoder
Fig.138: Overview of gantry interface
1. Gantry interface
2. Trailing cable holder on gantry
6 Gantries
6.3 X and Y axis
110 Service Manual SIPLACE X-Series S (from Hxxxx) 01/2021
Removal
► Switch off the machine, disconnect it from the power supply and secure it to prevent
unauthorized reactivation.
1.2 "Preparatory work..." [}16]
► Unplug the incremental encoder cable from the gantry interface. In this case make a note of
the position to make clear assignment easier later on.
► Unthread the connection cable as far as the incremental encoder.
► Remove the three screws fastening the bracket and then carefully remove this together with
the incremental encoder on it.
► Remove the two screws fastening the incremental encoder and then carefully remove this
from the bracket.
Installation
► Clean the reading surface of the incremental encoder with a cloth and ethanol or with a Q tip.
► Use the two screws to fasten the incremental encoder to the bracket.
► Use the three screws to install the bracket. To do this, place the thickness gauge provided
between the incremental encoder and the scale, so that there is a gap. This gap must either
be 0.4mm
(golden scale) or 0.75mm (black-white scale). Use the corresponding thickness
gauge.
► Reconnect to the electricity supply.
CAUTION
Make sure that the cables do not rub against anything.
Make sure that the axes can be moved without damaging the cables.
► Fasten them with cable ties
► Check the track signals with the test device (see 6.3.4 "Track Signals and Zero
Pulse" [}111]).
6.3.3 Mechanical adjustment of the incremental encoder
The incremental encoders (read units) on the X and Y axis are adjusted exactly to the position of
the incremental scale. The two limit marks on the incremental encoder show where the top/bottom
positions of the scale should be.
Set the incremental encoder mechanically to a distance of 0.75 mm to the incremental encoder.
NOTICE
Plastic disks
To set this distance, use one or more small plastic disks with a total thickness of 0.75mm.
► Feeler gauge 0.75mm plastic [03090774-xx]
After this adjustment of the incremental encoder you have to check the zero pulse and track sig-
nals.
Correct installation should ensure correct count and zero pulse signals. For troubleshooting pur-
poses (error analysis and fixing), you will need to measures these signals.
Please also observe section 6.3.4 "Track Signals and Zero Pulse" [}111].