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ATOM
Installation Manual
36 pgs5.44 Mb0
Installation Manual
42 pgs6.28 Mb0

Renishaw ATOM Installation Manual

RSLM high accuracy linear encoder
Installation guide
M-9693-9723-05-D
ATOM
™
linear encoder systems
Contents
Product compliance 1
Storage and handling 2
ATOM system installation overview 3
RTLF tape scale:
Installation drawing 4 Application methods 5 Mounting (for lengths <500 mm only) 6 Application (any length) 7 Datum clamp 8 End covers 8 Reference mark deselection 8
RCLC glass spar scale: Installation drawing 9
Mounting 10
System connection:
Readhead only (no interface) 11 ACi interface 13 Ri interface 15 Ti interface 16
Readhead mounting and alignment:
Methods 17 Shim kit (A-9401-0050) 18 Dummy head (A-9401-0072) 19 Accurate bracket and feeler gauge 20 Signal amplitude adjustment 20
Calibration overview 21
System calibration (CAL) Step 1 - Incremental signal calibration 22 Step 2 - Reference mark phasing 22 Calibration routine - manual exit 22 Restoring factory defaults 22 Switching Automatic Gain Control (AGC) on or off 22
LED diagnostics 23
Troubleshooting 24
ATOM readhead:
Cabled readhead dimensions 26 FPC readhead dimensions 27 Output signals 28
ACi interface:
FPC variant 29 Installation drawing 29 Input signals 29 Output signals 29 Cable variant 30 Installation drawing 30 Readhead cable input connector 30 Input signals 30 Output signals 30 PCB mounting variant 31 Input signals 31 Output signals 31 Speed 32
Ri interface: Interface drawing 33
Output signals 33 Speed 34
Ti interface: Interface drawing 35
Output signals 35 Speed 36
Electrical connections 37
Output specications 38
General specications 39
Scale specications 39
1
Further information
Further information relating to the ATOM encoder range can be found in the ATOM system Data sheet (L-9517-9563). This can be downloaded from our website www.renishaw.com/encoder and is also available from your local representative. This document may not be copied or reproduced in whole or in part, or transferred to any other media or language, by any means without the written prior permission of Renishaw. The publication of material within this document does not imply freedom from the patent rights of Renishaw plc.
Disclaimer
RENISHAW HAS MADE CONSIDERABLE EFFORTS TO ENSURE THE CONTENT OF THIS DOCUMENT IS CORRECT AT THE DATE OF PUBLICATION BUT MAKES NO WARRANTIES OR REPRESENTATIONS REGARDING THE CONTENT. RENISHAW EXCLUDES LIABILITY, HOWSOEVER ARISING, FOR ANY INACCURACIES IN THIS DOCUMENT.
Product compliance
ATOM cabled readhead and accessories
C
Renishaw plc declares that ATOM complies with the applicable standards and regulations. A copy of the EC Declaration of Conformity is available on request.
FCC compliance
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
The user is cautioned that any changes or modications not expressly approved by Renishaw plc or
authorised representative could void the user’s authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
NOTE: This unit was tested with shielded cables on the peripheral devices. Shielded cables must be used with the unit to ensure compliance.
ATOM FPC readhead and ACi
The FPC ATOM and ACi have been designed as system components and to be compliant with EMC regulations for products of their type. Care must be taken with shielding and grounding arrangements to ensure EMC performance once installed. It is the system integrator’s responsibility to implement, test and prove EMC compliance for the whole machine.
RoHS compliance
Compliant with EC directive 2011/65/EU (RoHS)
Patents
Features of Renishaw’s encoder systems and similar products are the subjects of the following
patents and patent applications:
CN1314511C EP1469969 JP5002559 US8466943
CN101300463B EP1946048 JP5017275 US7624513B2
CN101310165B EP1957943 US7839296 WO2014096764
The use of this symbol on Renishaw products and/or accompanying documentation indicates that the product should not be mixed with general household waste upon disposal. It is the responsibility of the end user to dispose of this product at a designated collection point for waste electrical and electronic equipment (WEEE) to enable reuse or recycling. Correct disposal of this product will help to save valuable resources and prevent potential negative effects on the environment. For more information, please contact your local waste disposal service or Renishaw distributor.
The packaging of our products contains the following materials and can be recycled.
Cardboard
Polypropylene
Low Density Polyethylene Foam
Cardboard
High Density Polyethylene Bag
Metalised Polyethylene
Not applicable
PP
LDPE
Not applicable
HDPE
PE
Outer box
Inserts
Bags
Recycling Guidance
ISO 11469
Material
Packaging Component
Recyclable
Recyclable
Recyclable
Recyclable
Recyclable
Recyclable
2
Storage and handling
RTLF and RCLC scales
+70 °C
-20 °C
Minimum bend radius RTLF – 150 mm
NOTE: Ensure self-adhesive tape is on the outside of bend.
95% relative humidity (non-condensing) to EN 60068-2-78
Humidity
Storage
+70 °C
0 °C
Operating
N-heptane
CH
3
(CH2)5CH
3
Propan-2-ol
CH3CHOHCH
3
Scale and readhead
RCLC scale only
3
ATOM system installation overview
This section gives an overview of the steps involved in installing, setting-up and calibrating an ATOM system. More detailed information is contained within the rest of the document.
For information on designing the readhead and scale into the system refer to the detailed installation drawings and 3D models on www.renishaw.com or contact your local Renishaw representative.
IMPORTANT: Prior to installing readhead and scale, installation drawings should be reviewed to ensure correct orientation of readhead relative to scale.
Scale mounting
System connection
RTLF (tape scale)
RCLC (glass spar)
Ledge or dowel mount
<500 mm only.
See page 6.
Ledge or dowel mount. See page 10.
Scale applicator
Any length.
See page 7.
Fit datum clamp.
See page 8.
Fit datum clamp.
See page 10.
Deselect unused reference marks.
See page 8.
Fit end covers.
See page 8.
System connection
Calibrate system
See page 22.
No interface
Connect readhead to customer electronics.
See page 11.
Interface
Plug readhead cable into
the interface and connect to
customer electronics.
See pages 13 to 16.
Fixed mounting
Shim kit
See page 18.
Mount and align readhead
Adjustable bracket
Signal
amplitude
adjustment.
See page 20.
Accurate
bracket.
See page 20.
Dummy head.
See page 19.
4
RTLF tape scale: Installation drawing
For dimensioned cabled and FPC readhead drawings see pages 26 and 27.
Dimensions and tolerances in mm
Measuring length = Overall length -3 mm
For detailed installation drawings refer to www.renishaw.com
0.36
0.18
0.22
(Roll tol. ±1°)
40 µm version
(Yaw tol. ±1°)
20 µm version
(Yaw tol. ±0.5°)
8
4.5
12
Scale thickness (including adhesive) 0.41
FPC ribbon cable
Scale datum edge
Datum clamp (A-9585-0028) (see page 8)
Set-up LED
1.02 ±0.25
0.36
(Pitch tol. ±1°)
50
50
Reference mark
Reference mark
Forward direction of readhead
relative to scale
Rideheight (for calibration):
2.5 ±0.08 (40 µm version)
2.5 ±0.04 (20 µm version)
Operating rideheight:
2.5 ±0.11 (40 µm version)
2.5 ±0.055 (20 µm version)
Readhead/scale orientation
5
Datum edge of readhead mounted against machine axis. For use with side mounting bracket A-9401-0103. or customer designed bracket.
Datum edge of readhead located against a ledge on the bracket to control yaw. For use with ‘L’ mounting bracket A-9402-0037 or customer designed bracket.
Readhead mounting is integral to the machine and does not allow rideheight adjustment.
Slim applicator A-9402-0060. See page 7.
Top mount applicator A-9402-0028. See page 7.
Side mounted applicator A-9402-0034. Only for use with ‘L’ mounting bracket A-9402-0037. See page 7.
Top mount applicator A-9402-0028. See page 7.
RTLF tape scale: Application methods
RTLF scale application depends upon scale length and bracket type
Mounting (<500 mm only)
RTLF tape scale
Application (any length)
Fixed mounting
Adjustable bracket
Ledge or dowel mounting. See page 6.
Install datum clamp, end covers and deselect reference marks. See page 8.
6
Location ledge
RTLF tape scale: Mounting (for lengths <500 mm only)
4
3
Locate scale against dowels or ledge and rotate down onto substrate.
*
1
Thoroughly clean and degrease the substrate.
2
Remove backing paper from scale.
or
Install datum clamp, end covers and deselect reference marks as detailed on page 8.
6
Remove temporary dowels
(if tted).
7
5
Clean scale using Renishaw scale cleaning wipes (A-9523-4040) or a clean, dry, lint-free cloth.
*
If dowels or ledge are permanent, their maximum
height above substrate is 0.6 mm.
Support dowels
7
For more information on designing your bracket and mounting the chosen scale applicator contact your local Renishaw representative.
RTLF tape scale: Application (any length)
There are three versions of applicator for use with RTLF scale depending upon the design of the readhead mounting bracket:
Slim applicator (A-9402-0060) which is mounted in place of the
readhead bracket. It can be used in conjunction with the side mounting bracket (A-9401-0103) or a customer designed bracket.
Top mount applicator (A-9402-0028) which is mounted in place
of the readhead. It can be used in conjunction with the ‘L’ mounting bracket (A-9402-0037) or a customer designed bracket.
Side mount applicator (A-9402-0034) which is mounted in place
of the readhead bracket. It can be used in conjunction with the ‘L’ mounting bracket (A-9402-0037) or a customer designed bracket.
Thoroughly clean and degrease the substrate.
3
4
Slim and side mount applicators:
Mount the applicator in place of the readhead bracket.
Top mount applicator:
Mount the applicator on a specically designed bracket in place of the readhead.
2
Mark out the start position for the scale on the axis substrate.
1
Allow scale to acclimatize to installation environment prior to installation.
Side mount applicator shown
Scale
(attached to substrate)
Limit stop
Scale
‘Splitter screw’
Backing paper
Direction of scale application
Start position
Check correct scale orientation.
6
Move axis to start of travel.
5
7
When using the top mount applicator cut the backing paper approximately 30 mm from the end of the scale. Leaving the end piece adhering to the scale begin to peel off the remaining backing paper. Insert the scale into the applicator up to the start position. Ensure the backing paper feeds out of the back of the applicator round the splitter screw as shown.
8
Apply pressure via a clean lint free cloth to ensure scale end adheres well to the substrate.
9
Slowly and smoothly move the applicator through the entire length of travel, ensuring the backing paper is pulled manually from the scale and does not catch under the applicator.
12
Clean the scale using Renishaw scale cleaning wipes (A-9523-4040) or a clean, dry, lint-free cloth.
13
Fit datum clamp and end covers and, if needed, deselect reference marks that are not required as detailed on page 8.
10
Remove applicator and, if necessary, adhere the remaining scale manually. NOTE: when using the top mount applicator ensure the backing paper left at the start of the axis is removed.
Apply a rm nger pressure via a clean lint-free cloth along the
length of the scale after application to ensure complete adhesion.
Slim and side mount applicators:
Fit readhead mounting bracket after removal of scale applicator.
11
When using the slim or side mount applicators begin to peel off the backing paper from the end of the scale and insert the scale into the applicator up to the start. Ensure the backing paper feeds out of the back of the applicator around the splitter screw as shown.
8
Datum clamp (A-9585-0028)
The datum clamp xes the RTLF scale rigidly to the substrate at the location chosen.
The metrology of the system may be compromised if the datum clamp is not used. It can be positioned anywhere along the axis depending upon the customers’ requirements.
2
Align markers on the edges of the end cover with the end of the scale and place end cover over the scale.
NOTE: There will be a gap* between the end of the scale and the adhesive tape on the end cover.
Reference mark deselection
RTLF scale >100 mm in length has reference marks every 50 mm. Stickers can be used to deselect all unused reference marks (A-9402-0049 for a sheet of 20). The stickers are aligned on the backing paper with a 50 mm spacing so two can be selected at once for deselecting two reference marks.
1
Ensure the scale is free from dirt and grease
by cleaning with a scale wipe (A-9523-4040) or suitable solvent.
2
Place the transparent applicator lm over the
reference mark deselector stickers and rub rmly until the sticker adheres to the applicator lm.
Two stickers can be selected at once.
3
Remove the applicator lm, complete with
the stickers, from the backing paper.
Self adhesive reference mark deselector stickers on backing paper
5
Remove applicator lm.
4
Align the stickers on the scale over the
reference marks that are not required,
as shown in the diagram, then rub rmly on the applicator lm until the stickers
adhere to the scale. Care should be taken to ensure the stickers fully cover the reference mark and do not obscure any of the incremental track.
Deselected reference marks
Applicator film
End covers
The end cover kit (A-9585-0035) is designed to be used with RTLF scale to provide protection for exposed scale ends.
NOTE: End covers are optional and can be tted before or after readhead installation.
1
Remove the backing paper from the adhesive tape on the back of the end cover.
22
8
Incremental track
Dimensions in mm
2
Place a small amount of adhesive (Loctite® 435™) in the cut-out on the datum clamp, ensuring none of the adhesive wicks onto the scale surface. Dispensing tips P-TL50-0209 are available.
1
Remove the backing paper from the datum clamp. Place the datum clamp with cut-out against the scale at the chosen location.
Ensure the adhesive wicks along the entire length of cut-out.
*
gap
9
For detailed installation drawings refer to www.renishaw.com
Dimensions and tolerances in mm
*Can be applied on one or both sides of the scale.
A-9404-4018
0.22
(Roll tol. ±1°)
40 µm version
(Yaw tol. ±1°)
20 µm version
(Yaw tol. ±0.5°)
6.35
6.82 ±0.25
End reference mark
Scale thickness (including adhesive) 1.1
FPC cable
Scale datum edge
Readhead datum face
Set-up LED
1.42 ±0.25
0.36
(Pitch tol. ±1°)
End reference mark readhead orientation
Mid reference mark readhead orientation
Adhesive datum clamp* (length 8 - 16, width 1 - 5) (A-9531-0342) (see page 10)
L/2
5
Forward direction of readhead
relative to scale
Forward direction of readhead
relative to scale
0.36
0.18
Mid reference mark
Rideheight (for calibration):
2.5 ±0.08 (40 µm version)
2.5 ±0.04 (20 µm version)
Operating rideheight:
2.5 ±0.11 (40 µm version)
2.5 ±0.055 (20 µm version)
RCLC glass spar scale: Installation drawing
For dimensioned cabled and FPC readhead drawings see page 26 and 27.
Readhead/scale orientation
Overall length (L) 10† 18 30 55 80 100 105 130
Measuring length 7 15 27 52 77 97 102 127
†
20 µm pitch RCLC scale only.
10
Support dowels
RCLC glass spar scale: Mounting
4
Locate scale against dowels or ledge and rotate down onto substrate.*
1
Thoroughly clean and degrease the substrate.
2
Remove backing paper from scale.
Location ledge
5
or
After 24 hours when adhesive is cured, clean scale using Renishaw scale cleaning wipes (A-9523-4040) or a clean, dry, lint-free cloth.
7
Apply llet of adhesive (A-9531-0342). Adhesive can be applied to one or both sides of the scale. Ensure adhesive does not wick onto scale surface.
(End reference mark shown).
Datum clamp does not need to be positioned adjacent to a reference mark. It can be positioned anywhere along the axis depending upon the customers’ requirements.
6
*
If dowels or ledge are permanent, their maximum height
above substrate is 1.2 mm.
Remove temporary dowels (if tted).
8
3
Ensure correct orientation of the scale for chosen reference mark location (middle or end of scale) and readhead orientation. See ‘RCLC glass spar scale: Installation drawing’ for details.
11
System connection: Readhead only (no interface)
The ATOM readhead is available in several variants:
u
Cable variant with a 15 way D-type connector
u
Cable variant with interboard connector
u
FPC variant
None of these readhead variants has an integral calibration (CAL) button. Provision should be made in the customers’ electronics for momentarily connecting the CAL line to 0 V to initiate the calibration routine, switch AGC on/off or restore factory defaults. See page 28 for pin-out information.
Calibration is an essential part of system set-up that optimises the incremental signals and phases the reference mark. See page 22 for information on the calibration routine.
For cable variant with interboard connector
u
Ensure that the interboard connector is inserted into the connector on the customers’ electronics
NOTE: Care should be taken to ensure correct orientation
u
Use a metal clamp around the cable ferrule to ground the readhead cable and ensure continuity
of the shields
u
Provide appropriate strain relief
u
Ensure suitable clamping to retain interboard connector to the mating connector
For FPC variants
Ensure that the FPC cable being used has the following specifications:
u
16 core
u
Conductor pitch 0.5 mm
u
Minimum exposed conductor strip length 1.5 mm
u
Maximum exposed conductor strip length 2.5 mm (to ensure isolation from the body)
Contact your local Renishaw representative for more information of the FPC design requirements.
Shielding
For optimum performance:
u
Ensure 100% shielding
u
Ground the mounting brackets
u
Ensure continuity of all shields
u
Maximise the distance between the encoder and motor cables
u
Provide appropriate strain relief at the readhead
JST 12 way, single row 12SUR-32S
Interboard connector 14 way, dual row DF23C-14DS- 0.5 V
1
2
13
14
Interboard connector
PCB
FPC connector
FPC cable
Readhead LED
Shield connect pad
0-0.5 mm
4 mm
Example of strain relief:
3.25 mm
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