RENISHAW RKLC20 VIONiC Linear Encoder System Installation Guide
- October 27, 2023
- RENISHAW
Table of Contents
RKLC20 VIONiC Linear Encoder System
Installation guide M-6195-9477-01-E
VIONiCTM RKLC20-S linear encoder system
Contents
Legal notices
1
Storage and handling
3
VIONiC readhead installation drawing
4
RKLC20-S scale installation drawing
5
Scale application
6
End clamps
6
Reference mark selector and limit magnet installation 7
VIONiC encoder system quick-start guide
8
Readhead mounting and alignment
9
System calibration
10
Restoring factory defaults
11
Enabling/disabling AGC
11
Output signals
12
Speed
13
Electrical connections
14
Output specifications
15
General specifications
16
RKLC20-S scale specifications
17
Reference mark
17
Limit switches
17
VIONiC RKLC20-S linear installation guide
Legal notices
Copyright
© 20192021 Renishaw plc. All rights reserved. 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 prior written permission of Renishaw.
Trade marks
RENISHAW® and the probe symbol are registered trade marks of Renishaw plc.
Renishaw product names, designations and the mark `apply innovation’ are trade
marks of Renishaw plc or its subsidiaries. Other brand, product or company
names are trade marks of their respective owners.
Patents
Features of Renishaw’s encoder systems and similar products are the subjects
of the following patents and patent applications:
EP1173731 JP4932706 JP5386081 US7624513 CN1314511 US8466943
JP4750998 US7659992 US7550710 CN101310165 EP1469969
US6775008 CN100507454 CN101300463 EP1957943 EP2390045
CN100543424 EP1766335 EP1946048 US7839296 JP5002559
EP1766334 IN281839 JP5017275 WO2017203210 US8987633
Disclaimer
WHILE CONSIDERABLE EFFORT WAS MADE TO VERIFY THE ACCURACY OF THIS DOCUMENT AT
PUBLICATION, ALL WARRANTIES, CONDITIONS, REPRESENTATIONS AND LIABILITY,
HOWSOEVER ARISING, ARE EXCLUDED TO THE EXTENT PERMITTED BY LAW.
RENISHAW RESERVES THE RIGHT TO MAKE CHANGES TO THIS DOCUMENT AND TO THE
EQUIPMENT, AND/OR SOFTWARE AND THE SPECIFICATION DESCRIBED HEREIN WITHOUT
OBLIGATION TO PROVIDE NOTICE OF SUCH CHANGES.
Terms and Conditions and Warranty
Unless you and Renishaw have agreed and signed a separate written agreement,
the equipment and/or software are sold subject to the Renishaw Standard Terms
and Conditions supplied with such equipment and/or software, or available on
request from your local Renishaw office.
Renishaw warrants its equipment and software for a limited period (as set out
in the Standard Terms and Conditions), provided that they are installed and
used exactly as defined in associated Renishaw documentation. You should
consult these Standard Terms and Conditions to find out the full details of
your warranty.
Equipment and/or software purchased by you from a third-party supplier is
subject to separate terms and conditions supplied with such equipment and/or
software. You should contact your third-party supplier for details.
Product compliance
Renishaw plc declares that the VIONiCTM encoder system complies with the
applicable standards and regulations. A copy of the EU declaration of
conformity is available from our website at www.renishaw.com/productcompliance
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 modifications
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.
Further information
Further information relating to the VIONiC encoder range can be found in the
VIONiC series encoder system data sheet (Renishaw part no. L-9517-9678),
Advanced Diagnostic Tool ADTi-100 data sheet (Renishaw part no. L-9517-9699),
Advanced Diagnostic Tool ADTi-100 and ADT View software quick-start guide
(Renishaw part no. M-6195-9321), and the Advanced Diagnostic Tool ADTi-100 and
ADT View software user guide (Renishaw part no. M-6195-9413). These can be
downloaded from our website www.renishaw.com/vionicdownloads and are also
available from your local Renishaw representative.
VIONiC RKLC20-S linear installation guide
1
Legal notices (continued)
Packaging
The packaging of our products contains the following materials and can be
recycled.
Packaging Component
Material
Outer box
Cardboard
Polypropylene
Inserts
Low density polyethylene foam
Cardboard
Bags
High density polyethylene bag
Metalised polyethylene
ISO 11469 Not applicable PP LDPE Not applicable HDPE PE
Recycling Guidance Recyclable Recyclable Recyclable Recyclable Recyclable Recyclable
REACH regulation
Information required by Article 33(1) of Regulation (EC) No. 1907/2006
(“REACH”) relating to products containing substances of very high concern
(SVHCs) is available at www.renishaw.com/REACH
WEEE recycling guidelines
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.
VIONiC RKLC20-S linear installation guide
2
Storage and handling
Scale and readhead
N-heptane
Propan-2-ol
CH3(CH2)5CH3
CH3CHOHCH3
Readhead only
Acetone
CH3COCH3
Chlorinated Solvents
Methylated Spirits
Minimum bend radius RKLC20-S 50 mm
Storage
+70 °C -20 °C
Installation
+35 °C +10 °C
Operating
+70 °C 0 °C
Humidity
VIONiC RKLC20-S linear installation guide
NOTE: During storage, ensure self-adhesive tape is on the outside of bend.
95% relative humidity (non-condensing) to IEC 60068278
3
VIONiC readhead installation drawing
Reference mark selector magnet
Optical centreline (incremental and reference mark)
18
29
7.8 7.8
(Yaw tol. ±0.4°) 0.25
Ø4.25 ±0.25
P limit magnet Selected IN-TRAC TM reference mark
Reference mark selector sensor position
6 min R > 30 Dynamic bend radius R > 10 Static bend radius
Set-up LED
Offset 3.75 ±0.5 Q limit magnet
P and Q limit switch sensor position
Forward direction of readhead relative to scale
35 23 11.5
2 off mounting holes M2.5 through, counterbored Ø3 × 2.3 deep both sides.
NOTE: The recommended thread engagement is 5 min (7.5 including counterbore)
and the recommended tightening torque is between 0.25 and 0.4 Nm.
A (Pitch tol. ±1°) 0.6
4.75
Optical centreline marker
Dimensions and tolerances in mm
(Roll tol. ±0.5°) 0.08
8.75 *
4.25 Mounting faces 13.5
4.15 10
Detail A Scale reading surface Scale thickness 0.15 (including adhesive)
Rideheight: 2.1 ±0.15
*Extent of mounting face. Dimension from substrate surface.
VIONiC RKLC20-S linear installation guide
4
RKLC20-S scale installation drawing
Dimensions and tolerances in mm
START (page 6) 20
Overall length (L + 30) Scale length (L)
Measuring length ML = (L – 40) (ML = (L – 55) with dual limits) Readhead
optical detector position at extent of travel
FINISH (page 6)
35 (20 when Q limit
not used)
VIONiC readhead
0.5 0.2 /100
F
F = axis of motion
9.2 A
Reference mark selector magnet (A-9653-0143) (Dimensions as Q limit)
13 30 P limit magnet (A-9653-0138)
(Dimensions as Q limit)
Nominal P limit trigger point
Ra 3.2
P and Q limit switch sensor position
IN-TRAC reference mark RKLC20-S scale
Optical centreline (Incremental and reference mark)
6 Q limit magnet (A-9653-0139)
0.05 F F = axis of motion
10
15
End clamp
(Pair A-9523-4015)
Nominal Q limit trigger point
1.5* Detail A
15 ±1
Optional bolted reference mark selector or limit magnets
22
18
Bolted magnet type
Part number
9.7
Reference mark selector A-9653-0290
Ø2.2
10
1.85
3.7
Q limit
A-9653-0291
P limit
A-9653-0292
3.7
18.5 ±1
*Dimension from substrate. Supplied with 2 × M2 × 4 screws.
NOTES: The reference mark selector and limit actuator locations are correct for the readhead orientation shown. External magnetic fields greater than 6 mT, in the vicinity of the readhead, may cause false activation of the limit and reference sensors.
VIONiC RKLC20-S linear installation guide
5
Scale application
Scale applicator (A-6547-1912) is designed for use with RKLC20-S scale.
1. Allow the scale to acclimatise to the installation environment prior to
installation. NOTE: RKLC scale should be installed between +10 °C and +35 °C
to ensure scale mastering.
2. Mark out the START’ andFINISH’ points for the scale on the axis
substrate ensure that there is room for the end clamps (RKLC20-S scale installation drawing’, page 5). 3\. Thoroughly clean and degrease the substrate using recommended solvents (Storage and handling’, page 3). Allow the substrate to dry before applying
scale.
4. Mount the scale applicator to the readhead mounting bracket using M2.5
screws. Place the shim supplied with the readhead between the applicator and
substrate to set the nominal height. NOTE: The scale applicator can be mounted
either way round to enable easiest orientation for scale installation.
5. Move the axis to the scale `START’ position, leaving enough room for the
scale to be inserted through the applicator.
10. Remove the applicator carefully. Apply firm finger pressure via a clean
lintfree cloth along the length of the scale after application to ensure
complete adhesion.
11. Clean the scale using Renishaw scale wipes (A-9523-4040) or a clean, dry,
lint-free cloth.
12. Fit end clamps: see `End clamps’ below.
End clamps
A-9523-4015 is an end clamp kit designed to be used with Renishaw RKLC20-S
scale. (Alternative narrow 6 mm wide end clamps (A95234111) are also
available.)
NOTE: End clamps can be mounted before or after readhead installation.
1. Clean the ends of the scale and the area where end clamps are to be fitted using Renishaw scale wipes (A-9523-4040) or one of the recommended solvents (`Storage and handling’, page 3).
2. Thoroughly mix up a sachet of glue (A-9531-0342) and apply a small amount to the underside of the end clamp.
START
Splitter screw
M2.5 mounting holes
6. Begin to remove the backing paper from the scale and insert the scale into
the applicator up to the START’ point (as shown). Ensure the backing paper is routed under the splitter screw. 7\. Ensure that the end of the scale is in line with theSTART’ position on
the axis and apply finger pressure via a clean lint-free cloth to ensure scale
end adheres well to the substrate.
Direction of scale application
RKLC20-S Backing tape
3. The end clamp features two small regions of contact adhesive. These will temporarily hold the end clamp in position while the glue cures. Remove the backing tape from either side.
4. Immediately position the end clamp over the end of the scale and push down to ensure complete adhesion. Allow 24 hours at 20 °C for full cure.*
Splitter screw
`START’
Ensure that excess glue is wiped away from the scale as it may affect the
8. Slowly and smoothly move the applicator through the entire axis of travel, ensuring the backing paper is
readhead signal level.
pulled manually from the scale and does not catch under the applicator.
*To ensure scale end movement of typically < 1 m, stabilise the system at least 5 °C higher than the maximum customer
9. During installation ensure the scale is adhered to the substrate using light finger pressure.
application temperature for a minimum of 8 hours. For example: Customer application = 23 °C axis temperature. Stabilise the system at 28 °C for a minimum of 8 hours.
VIONiC RKLC20-S linear installation guide
6
Reference mark selector and limit magnet installation
IMPORTANT: Allow 24 hours after scale application before fitting magnets.
For accuracy and ease of positioning of reference mark selector and limit
magnets, the applicator tool (A-9653-0201) should be used. The magnet should
be attached to the applicator tool as shown below. Limit magnets can be
positioned at any userdefined location along the scale, but the reference mark
selector magnet should be positioned adjacent to the selected IN-TRAC
reference mark as shown. As the VIONiC readhead passes the reference mark
selector magnet or limit switch magnet, a force of up to 0.2 N is generated
between the magnet and the concentrators on the readhead. The design of the
bracket should be sufficiently stiff so that it is able to tolerate such force
without distorting. Following the clamping instructions on the scale
installation will prevent this magnetic force from disturbing the scale.
Limit trigger point
The limit output is nominally asserted when the readhead limit switch sensor
passes the limit magnet leading edge, but can trigger up to 3 mm before that
edge (RKLC20-S scale installation drawing’, page 5). NOTES X Reference and limit magnets may creep when influenced by magnetic materials in close proximity. In such cases, they should be held in place using an additional fillet of epoxy glue or similar along the outer edge of the magnet assembly. Optional bolted reference and limit magnets are available (RKLC20-S scale installation drawing’, page 5). X
The reference mark selector and limit actuator locations are correct for the
readhead orientation shown. X The reference mark selector magnet is only
required for `Customer selectable reference mark’ readheads. For more
information refer to VIONiC series encoder system data sheet (Renishaw part
no. L-9517-9678). X External magnetic fields greater than 6mT, in the vicinity
of the readhead, may cause false activation of the limit and reference
sensors.
VIONiC RKLC20-S linear installation guide
P limit magnet
Applicator tool (A-9653-0201)
Remove self-adhesive backing paper
Reference mark selector magnet
Selected IN-TRAC reference mark
Q limit magnet 7
VIONiC encoder system quick-start guide
This section is a quick-start guide to installing a VIONiC encoder system.
More detailed information on installing the system is contained on page 9 and
page 10 of this installation guide. The optional Advanced Diagnostic Tool
ADTi-100* (A-6165-0100) and ADT View software can be used to aid installation
and calibration.
INSTALLATION
Ensure scale, readhead optical window and mounting faces are clean and free
from obstructions.
If required, ensure reference mark selector magnet is correctly positioned
(`RKLC20-S scale installation drawing’, page 5).
Connect the readhead to receiving electronics and powerup. The setup LED on
the readhead will flash.
Install and align the readhead to maximise signal strength over the full axis
of travel as indicated by a Green flashing LED.
CALIBRATION
Cycle the power to the readhead to initiate the calibration routine. The LED
will single flash Blue.
Move the readhead along the scale at slow speed (< 100 mm/s), without passing
a reference mark, until the LED starts double flashing Blue.
No reference mark
If a reference mark is not being used, the calibration routine should now be
exited by cycling the power. The LED will stop flashing.
Reference mark
Move the readhead back and forth over the selected reference mark until the
LED stops flashing.
The system is now calibrated and ready for use. Calibration values, Automatic
Gain Control (AGC) and Automatic Offset Control (AOC) status, are stored in
readhead non-volatile memory at power down. NOTE: If calibration fails (LED
remains single flashing blue), restore factory defaults by obscuring the
readhead optical window on powerup (page 11). Repeat the installation and
calibration routine.
*For more details refer to the Advanced Diagnostic Tool ADTi-100 and ADT View software quick-start guide (Renishaw part no. M-6195-9321) and Advanced Diagnostic Tool ADTi-100 and ADT View software user guide (Renishaw part no. M-6195-9413). The software can be downloaded for free from www.renishaw.com/adt
VIONiC RKLC20-S linear installation guide
8
Readhead mounting and alignment
Mounting brackets
The bracket must have a flat mounting surface and should provide adjustment to
enable conformance to the installation tolerances, allow adjustment to the
rideheight of the readhead, and be sufficiently stiff to prevent deflection or
vibration of the readhead during operation.
Readhead set-up
Ensure that the scale, readhead optical window and mounting face are clean and
free from obstructions. NOTE: When cleaning readhead and scale apply cleaning
fluid sparingly; do not soak.
To set nominal rideheight, place the green spacer with the aperture under the
optical centre of the readhead to allow normal LED function during setup
procedure. Adjust the readhead to achieve a flashing Green LED along the full
axis of travel. The faster the flash rate, the closer it is to optimum setup.
The optional Advanced Diagnostic Tool ADTi-100 (A-6195-0100) and ADT View
software can be used to optimise signal strength in challenging installations.
See www.renishaw.com/adt for more information.
NOTE: When re-installing the readhead factory defaults should be restored
(page 11).
Yaw 0° ±0.4°
Readhead set-up LED status
Readhead LED diagnostics
Mode Installation mode
Calibration mode Normal operation
Alarm
LED Green flashing
Status Good setup, maximise flash rate for optimum setup
Orange flashing
Poor setup, adjust readhead to obtain Green flashing LED
Red flashing
Poor setup, adjust readhead to obtain Green flashing LED
Blue single flashing Calibrating incremental signals Blue double flashing Calibrating reference mark
Blue
AGC on, optimum set-up
Green
AGC off, optimum set-up
Red Blank flash 4 red flashes
Poor set-up; signal may be too low for reliable operation Reference mark
detected (visible indication at speed < 100 mm/s only)
Low signal, over signal, or overspeed; system in error
Green flashing
Orange Red flashing flashing
Pitch 0° ±1°
Roll 0° ±0.5°
Green spacer Rideheight 2.1 ±0.15 mm
VIONiC RKLC20-S linear installation guide
9
System calibration
NOTE: The functions described below can also be carried out using the optional
ADT and ADT View software. See www.renishaw.com/adt for more information.
Ensure signal strength has been optimised along the full axis of travel, the
LED will be flashing Green. Cycle the power to the readhead or connect the
Remote CAL’ output pin to 0 V for < 3 seconds. The readhead will then single flash Blue to indicate it is in calibration mode as detailed inReadhead
mounting and alignment’, page 9. The readhead will only enter calibration mode
if the LED is flashing Green.
Step 1 Incremental signal calibration X Move the readhead along the axis at
slow speed (< 100 mm/s or less than the readhead maximum speed,
whichever is slowest) ensuring it does not pass a reference mark, until the
LED starts doubleflashing indicating the incremental signals are now
calibrated and the new settings are stored in the readhead memory. X The
system is now ready for reference mark phasing. For systems without a
reference mark, cycle the power to the readhead or connect the Remote CAL’ output pin to 0 V for < 3 seconds to exit calibration mode. X If the system does not automatically enter the reference mark phasing stage (LED continues single flashing) the calibration of the incremental signals has failed. After ensuring failure is not due to overspeed (> 100 mm/s or exceeding the readhead maximum speed) exit the calibration routine, restore factory defaults as detailed below, and check the readhead installation and system cleanliness before repeating the calibration routine. Step 2 Reference mark phasing X Move the readhead back and forth over the selected reference mark until the LED stops flashing and remains solid Blue (or Green if AGC is disabled). The reference mark is now phased. X The system automatically exits the calibration routine and is ready for operation. X AGC and AOC are automatically switched on once calibration is complete. To switch off AGC refer to Enabling/disabling AGC’, page 11. X If the LED continues doubleflashing after
repeatedly passing the chosen reference mark it is not being
detected.
– Ensure that the correct readhead configuration is being used. Readheads can
either output all reference marks or only output a reference mark where a
reference selector magnet is fitted depending on the options chosen when
ordering.
– Check reference mark selector magnet is fitted in the correct location
relative to readhead orientation (RKLC20-S scale installation drawing’, page 5). Calibration routine manual exit X To exit the calibration routine at any stage cycle the power to the readhead or connect theRemote CAL’
output pin to 0 V for < 3 seconds. The LED will then stop flashing.
LED Blue single flashing Blue double flashing Blue (auto-complete)
Settings stored None, restore factory defaults and recalibrate Incremental only Incremental and reference mark
VIONiC RKLC20-S linear installation guide
10
Restoring factory defaults
When re-installing the system, or in the case of continued calibration
failure, factory defaults should be restored. NOTE: Restoring factory defaults
can also be carried out using the optional ADTi-100 and ADT View software. See
www.renishaw.com/adt for more information.
To restore factory defaults: X Switch system off. X Obscure the readhead
optical window (using the spacer supplied with the readhead ensuring the cut-
out
is NOT under the optical window) or connect the Remote CAL’ output pin to 0 V. X Power the readhead. X Remove the spacer or, if using, the connection from theRemote CAL’ output pin to 0 V. X The LED will start continuously flashing
indicating factory defaults have been restored and the readhead
is in installation mode (flashing setup LED). X Repeat Readhead set-up’ procedure on page 9. Enabling/disabling AGC The AGC is automatically enabled once the system has been calibrated (indicated by a Blue LED). AGC can be manually switched off by connecting the Remote CAL’ output pin to 0 V for > 3 seconds < 10 seconds. The LED will then
be solid Green. NOTE: AGC can be switched on or off using the optional
ADTi-100 and ADT View software. See www.renishaw.com/adt for more information.
VIONiC RKLC20-S linear installation guide
11
Output signals
Digital outputs
Function
Signal
Power
Incremental
Reference mark Limits
Alarm Remote CAL * Shield
5 V
0 V
A
–
B
–
Z
–
P
Q
E
–
CAL
–
Colour
Brown White Red Blue Yellow Green Violet Grey Pink Black Orange Clear Screen
9-way D-type (A)
5 1 2 6 4 8 3 7 9 Case
15-way D-type (D)
7, 8 2, 9 14
6 13 5 12 4 11 10 3 1 Case
15-way D-type alternative pin-out (H) 4, 12 2, 10 1 9 3 11 14 7 8 6 13 5 Case
12-way circular connector (X)
G H M L J K D E A B F C Case
14-way JST (J)
10 1 7 2 11 9 8 12 14 13 3 4 Ferrule
9-way D-type connector (termination code A)
52
16
31
15-way D-type connector (termination code D, H)
52
16
40
12-way in-line circular connector (termination code X)
66
17
14-way JST connector (termination code J) 2.8
17 1
14
5
VIONiC RKLC20-S linear installation guide
- Remote CAL line must be connected for use with ADTi-100. 12-way circular Binder mating socket A-6195-0105. Pack of 5 14-way JST SH mating sockets:
A-9417-0025 Bottom mount; A-9417-0026 Side mount. Maximum of 20 insertion cycles for JST connector.
12
Speed
Clocked output option (MHz)
50
40
25
5 µm (D) 12
12
12
1 µm (X) 12
12
12
20
12
12
12
12 10.36
10
12
8.53
08
12
6.91
06
12
5.37
04
12
3.63
01
4.53 0.910
*For a readhead with a 1 m cable.
Maximum speed (m/s)
0.5 µm 0.2 µm 0.1 µm
(Z)
(W)
(Y)
12
7.25 3.63
12
5.80 2.90
9.06 3.63 1.81
8.06 3.22 1.61
5.18 2.07 1.04
4.27 1.71 0.850
3.45 1.38 0.690
2.69 1.07 0.540
1.81 0.450
0.730 0.180
0.360 0.090
50 nm (H) 1.81 1.45
0.906 0.806 0.518 0.427 0.345 0.269 0.181 0.045
40 nm (M) 1.45 1.16
0.725 0.645 0.414 0.341 0.276 0.215 0.145 0.036
25 nm (P)
0.906 0.725 0.453 0.403 0.259 0.213 0.173 0.134 0.091 0.023
20 nm (I)
0.725 0.580 0.363 0.322 0.207 0.171 0.138 0.107 0.073 0.018
10 nm (O)
0.363 0.290 0.181 0.161 0.104 0.085 0.069 0.054 0.036 0.009
5 nm (Q) 0.181 0.145 0.091 0.081 0.052 0.043 0.035 0.027 0.018 0.005
2.5 nm (R)
0.091 0.073 0.045 0.040 0.026 0.021 0.017 0.013 0.009 0.002
Minimum edge separation* (ns)
25.3 31.8 51.2 57.7 90.2 110 136 175 259 1038
VIONiC RKLC20-S linear installation guide
13
Electrical connections
Grounding and shielding
VIONiC readhead
Readhead termination /connector
Customer electronics
5 V
Output signals
0 V Shield
IMPORTANT: The shield should be connected to the machine earth (Field Ground).
For JST variants the ferrule should be connected to the machine earth.
Maximum readhead cable length: 3 m
Maximum extension cable length: Dependent on cable type, readhead cable length
and clock speed. Contact your local Renishaw representative for more
information.
NOTE: The maximum cable length between the readhead and the ADTi100 is 3 m.
Recommended signal termination
0 V
Readhead A B Z+
220 pF
Customer electronics
Cable Z 0 = 120R
120R
A B Z-
220 pF
0 V Standard RS422A line receiver circuitry.
Capacitors recommended for improved noise immunity.
Single ended alarm signal termination (Not available with `A’ cable termination)
Readhead
5 V 4k7
Customer electronics
1k8
100R E-
4k7
100nF
Limit output (Not available with `A’ cable termination)
5 V to 24 V R*
P Q
- Select R so that maximum current does not exceed 10 mA. Alternatively, use a suitable relay or opto-isolator.
Remote CAL operation
CAL
0 V Remote operation of the CAL /AGC is possible via CAL signal.
VIONiC RKLC20-S linear installation guide
14
Output specifications
Digital output signals Form Square wave differential line driver to EIA
RS422A (except limits P and Q)
Incremental* 2 channels A and B in quadrature (90° phase shifted)
Signal period P
Resolution S
A B
Reference *
Z
Synchronised pulse Z, duration as resolution. Bi-directionally repeatable.
Limits Open collector output, asynchronous pulse (Not available with `A’ cable
termination)
Active high Repeatability < 0.1 mm
Resolution option code
D X Z W Y H M P I O Q R
P (µm)
20 4 2 0.8 0.4 0.2 0.16 0.1 0.08 0.04 0.02 0.01
S (µm)
5 1 0.5 0.2 0.1 0.05 0.04 0.025 0.02 0.01 0.005 0.0025
NOTE: A wide reference mark option, outputting a reference pulse for the
duration of the signal period is available.
Contact your local Renishaw representative for more information.
P Q
~ Length of limit actuator
Alarm Line driven (Asynchronous pulse)
(Not available with `A’ cable termination)
E-
Alarm asserted when:
Signal amplitude < 20% or > 135%
Readhead speed too high for reliable operation
15 ms
or 3-state alarm Differentially transmitted signals forced open circuit for > 15 ms when alarm conditions valid.
- Inverse signals not shown for clarity. Only calibrated reference mark is bi-directionally repeatable.
VIONiC RKLC20-S linear installation guide
15
General specifications
Power supply
5V -5% /+10% Typically 200 mA fully terminated
Temperature (system)
Power from a 5 Vdc supply complying with the requirements for SELV of standard
IEC 60950-1 Ripple 200 mVpp maximum @ frequency up to 500 kHz
Storage -20 °C to +70 °C
Installation +10 °C to +35 °C * Operating 0 °C to +70 °C
Humidity (system)
95% relative humidity (non-condensing) to IEC 60068-2-78
Sealing Acceleration (system) Shock (system) Vibration (readhead)
(scale)
IP40 Operating 400 m/s², 3 axes Operating 500 m/s², 11 ms, ½ sine, 3 axes Operating 100 m/s² max @ 55 Hz to 2000 Hz, 3 axes Operating 300 m/s² max @ 55 Hz to 2000 Hz, 3 axes
Mass
Readhead 8.6 g
Cable 26 g/m
Readhead cable
Single-shielded, outside diameter 4.25 ±0.25 mm Flex life > 20 × 106 cycles at 30 mm bend radius
Maximum readhead cable length
UL recognised component 3 m
CAUTION: Renishaw encoder systems have been designed to the relevant EMC standards, but must be correctly integrated to achieve EMC compliance. In particular, attention to shielding arrangements is essential.
- To limit maximum tension in the scale (CTEsubstrate – CTEscale) × (Tuse extreme – Tinstall) 550 m/m where CTEscale = ~ 10.1 m/m/°C. Extension cables available. Contact your local Renishaw representative for further details.
VIONiC RKLC20-S linear installation guide
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RKLC20-S scale specifications
Form (H × W) Pitch Accuracy (at 20 °C) Linearity Supplied length Material
Mass Coefficient of thermal expansion (at 20 °C)
Installation temperature End fixing
0.15 mm × 6 mm including adhesive
20 µm
±5 µm/m
±2.5 µm/m achievable with two point error correction 20 mm up to 20 m (> 20 m
available on request)
Hardened and tempered stainless steel fitted with a selfadhesive backing tape
4.6 g/m Matches that of substrate material when scale ends fixed by epoxy
mounted end clamps +10 °C to +35 °C Epoxy mounted end clamps (A95234015)
Approved epoxy adhesive (A95310342) Scale end movement typically < 1 m *
Reference mark
Type Selection
Repeatability
Customer selected IN-TRAC reference mark, directly embedded into incremental
track. Bi-directional position repeatability
Single reference mark selection by selector magnet (A-9653-0143) customer
positioned
L 100 mm Single reference mark at scale centre
L > 100 mm Reference marks at 50 mm spacing (first reference mark 50 mm from
scale end)
Unit of resolution repeatability (bi-directional) across full system rated
speed and temperature ranges
Limit switches
Type
Trigger point
Mounting Repeatability
Magnetic actuators; with dimple triggers Q limit, without dimple triggers P
limit (`RKLC20-S scale installation drawing’, page 5)
The limit output is nominally asserted when the readhead limit switch sensor
passes the limit magnet leading edge, but can trigger up to 3 mm before that
edge
Customer placed at desired locations < 0.1 mm
- The scale and end clamps must be installed following the installation process, see page 6.
VIONiC RKLC20-S linear installation guide
17
Renishaw plc
New Mills, Wotton-under-Edge Gloucestershire, GL12 8JR United Kingdom
T +44 (0) 1453 524524 F +44 (0) 1453 524901 E uk@renishaw.com
www.renishaw.com
For worldwide contact details, please visit www.renishaw.com/contact
Renishaw plc. Registered in England and Wales. Company no: 1106260. Registered
office: New Mills, WottonunderEdge, Gloucestershire, GL12 8JR, UK.
M-6195-9477-01
Part no.: M-6195-9477-01-E Issued: 05.2021
References
- Renishaw: enhancing efficiency in manufacturing and healthcare
- Advanced Diagnostic Tools (ADTs)
- Product compliance
- Product Environmental Compliance
- VIONiCâ„¢ incremental encoder downloads