00197042-04_SM_X-Serie-S_Customer_EN.pdf - 第148页
6 Gantries 6.3 X and Y axis 148 Service Manual SIPLACE X-Serie S 06/2019 Fig.183: Casting marks on the incremental encoder ► Align the incremental encoder. Pay at- tention to the following points: – Set the exact height…
6 Gantries
6.3 X and Y axis
Service Manual SIPLACE X-Serie S 06/2019 147
Removal
► Switch off the machine, disconnect it from the power supply and secure it to prevent
unauthorized reactivation.
1.2 "Preparatory work..." [}16]
NOTICE
Recommendation
► We recommend that you always perform the following tasks from the opposite side,
over the other gantry. You may need to use a stepladder or something similar to help
you.
3
4
1
2
Fig.181: Removing the incremental encoder
1. Head plate - front view
2. Incremental encoder
3. Three fastening screws
4. Grub screw (secured with Loctite 241)
► Unplug the incremental encoder cable from the head 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 (2).
► Remove the three screws (3) fastening the incremental encoder (2) of the X axis and carefully
remove the incremental encoder.
Installation
3
4
1
2
Fig.182: Fitting the incremental encoder
► Clean the reading surface of the incre-
mental encoder with a cloth and eth-
anol or with a cleansing tip.
► Loosely fasten the incremental encoder
(2) with three fastening screws (3).
► 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).
6 Gantries
6.3 X and Y axis
148 Service Manual SIPLACE X-Serie S 06/2019
Fig.183: Casting marks on the incremental encoder
► 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 6.3.8 "Track Signals and Zero
Pulse" [}153]).
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 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.
6 Gantries
6.3 X and Y axis
Service Manual SIPLACE X-Serie S 06/2019 149
Overview
Fig.184: Overview of incremental encoder
1. Incremental encoder (mounted on the
holder)
2. Holder
3. Fastening screws (3x) for holder
Fig.185: Overview of gantry interface
1. Gantry interface
2. Trailing cable holder on gantry
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 incremental encoder holder and carefully remove this
together with the incremental encoder.
Installation
► Clean the reading surface of the incremental encoder with a cloth and ethanol or with a Q tip.
► Fit the incremental encoder with the three fastening screws. 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). Use the corresponding
thickness gauge (plastic).
► 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 6.3.8 "Track Signals and Zero
Pulse" [}153]).