Related Manuals for Renishaw TONiC T20x1 REXM20
Summary of Contents for Renishaw TONiC T20x1 REXM20
- Page 1 Installation guide M-9653-9248-05-A TONiC T20x1 REXM20/REXT20 ultra-high accuracy angle ™ encoder system www.renishaw.com/tonicdownloads #renishaw...
- Page 2 This page is intentionally left blank. TONiC REXM20 / REXT20 angle encoder system installation guide ™...
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Page 3: Table Of Contents
REXM 20/REXT20 ring specifications ....................44 www.renishaw.com... -
Page 4: Legal Notices
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. - Page 5 Unique Identifier: TONiC Further information relating to the TONiC encoder range can be found in the TONiC encoder system data sheet (Renishaw part no. L-9517-9337), TONiC DSi dual readhead rotary encoder Responsible Party - U.S. Contact Information system data sheet (Renishaw part no. L-9517-9466), and REXM20 ultra-high accuracy angle Renishaw Inc.
- Page 6 Disposal of waste electrical and electronic equipment 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.
- Page 7 Renishaw and the United States Government, civilian federal agency or prime contractor respectively. Please consult the applicable contract or •...
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Page 8: Storage And Handling
Storage and handling TONiC non-contact optical encoder systems provide However, in harsh environments such as machine good immunity against contaminants such as dust, tool applications, protection should be provided to fingerprints and light oils. prevent ingress of coolant or oil. System Ring only Readhead only... - Page 9 Temperature Humidity 95% relative humidity (non-condensing) to IEC 60068-2-78 Storage System −20 °C to +70 °C Bakeout UHV readhead +120 °C Operating System 0 °C to +70 °C www.renishaw.com...
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Page 10: Tonic T20X1 Readhead Installation Drawing
TONiC T20x1 readhead installation drawing Dimensions and tolerances in mm Optical centreline (incremental and reference mark) Offset 1.75 ±0.5 2 holes M2.5 through, counterbored top face 8.75 (Roll tolerance ±0.5°) Ø3 × 2.75 deep from alternative mounting face (Yaw tolerance ±0.4°) 0.08 0.25 Ring and readhead optical centreline 13.5... -
Page 11: Ti Interface Drawing
Push and hold during power ‘Off/On’ cycle • Only the readhead is UHV compatible. The Ti interface must be kept outside of the vacuum chamber. The dynamic bend radius is not applicable for UHV cables. UHV cables are for static use only. www.renishaw.com... -
Page 12: Dsi Drawing
DSi drawing Dimensions and tolerances in mm 17.4 26.5 42.5 Ø3.5 through 2 positions 17.5 Ti interface (plugged into DSi) 21.4 Access to propoZ button 19.4 92.5 TONiC REXM20 / REXT20 angle encoder system installation guide ™... -
Page 13: Rexm20/Rext20 Installation Drawing
Graduations are centred within this dimension. Refer to page for dimension and hole information. NOTE: For partial rotation REXT refer to ‘Mounting the REXT (partial rotation)’ on page 18. 52 mm and 57 mm rings have dimple fiducial features and no slots. www.renishaw.com... - Page 14 REXM20/ REXT20 specifications Dimensions Holes Nominal external diameter Line count θ (mm) (mm) (mm) (mm) (mm) 8 192 52.1 - 52.2 90° 9 000 57.25 - 57.35 90° 11 840 40.5 64.5 75.3 - 75.4 52.5 45° 15 744 57.5 97.5 100.2 - 100.3 77.5...
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Page 15: Equipment For Rexm20/Rext20 Mounting
‘Storage and handling’ on page 8) • 4 mm hex key • Torque wrench Optional parts: • Renishaw scale wipes (A-9523-4040) • Lint-free cloth Recommended screw type M5 × 0.8: ISO 4762/DIN 912 grade 10.9 minimum / ANSI B18.3.1M. www.renishaw.com... -
Page 16: Rexm20/Rext20 Ring Mounting
REXM20/REXT20 ring mounting • The REXM/ REXT ring should be flange mounted onto a flat surface to minimise 2-per-rev distortion. Dimensions and tolerances in mm • Taper mounting is not suitable for thick cross-section REXM/ REXT rings. • To avoid distorting the ring, the REXM/REXT should not be interference fitted. •... - Page 17 ‘Renishaw’ logo within ±0.5 mm. No external actuators or physical adjustments are required. For REXT20, the second reference mark is 180° from the first.
- Page 18 Mounting the REXT (partial rotation) IMPORTANT • For partial rotation applications using a DSi, a REXT ring (two reference marks opposite each other) is required. • The ring must be installed so that, when the ring is rotated, each readhead only sees a single reference mark. •...
- Page 19 (see figure 1). touch the ring. 8. The ring is positioned correctly and can be adjusted. ‘Adjusting the REXM/REXT ring (full and partial rotation)’ on page 20. Figure 1 Figure 2 Figure 3 0° Ф/2 Ф/2 www.renishaw.com...
- Page 20 Adjusting the REXM/REXT ring (full and partial rotation) 1. Remove the protective film from the surface of the ring. 2. Measure the run-out on the ring using a Dial Test Indicator (DTI). CAUTION: Use a DTI with low exertion force to avoid scratching the ring surface. A DTI with a ruby ball stylus is recommended as a further precaution against scratches.
- Page 21 14. If the ring has moved position outside the 10 µm limit, the screws must be loosened and the ring adjusted. 15. Clean ring using Renishaw scale cleaning wipes or a clean, dry, lint-free cloth. ‘Slot’ fiducial 8. Rotate the ring by 90°.
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Page 22: System Compatibility
Have a clocked output option the same or lower than the connected DSi. For details on readhead and interface configuration, refer to the TONiC encoder system ™ data sheet (Renishaw part no. L-9517-9337). TONiC REXM20 / REXT20 angle encoder system installation guide ™... -
Page 23: Tonic Encoder System Quick-Start Guide
28). Then repeat the installation and Move to the CALIBRATION steps. calibration routine. Repeat the installation and calibration process for the second readhead. Connect the interfaces to the DSi (see ‘DSi quick-start guide’ on page 29) or customers output blending electronics. www.renishaw.com... -
Page 24: System Connection
System connection Approved ESD precautions must be followed at all times during readhead and interface electrical connections. The readhead is connected to the Ti interface via a small, rugged connector to allow for easy feed-through during installation. Connecting the readhead 1. Remove the cover plate as shown (2 × M2.5 hex head screws). 2. - Page 25 1. Remove the cover plate on the interface (2 × M2.5 hex head screws). 2. Gently lever the connector PCB (on the end of the cable) out of the socket. Do not pull the cable to remove the connector. 3. Place the connector in an anti-static bag. 4. Refit the cover plate. www.renishaw.com...
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Page 26: Readhead Mounting And Alignment
Readhead mounting and alignment Mounting brackets Readhead set-up LED status The bracket must have a flat mounting surface and should 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. -
Page 27: System Calibration
CAL Off (auto-complete) Incremental and reference mark LED starts double-flashing. This indicates that the incremental signals are now calibrated and the new settings are stored in the readhead memory. www.renishaw.com... -
Page 28: Restoring Factory Defaults
Restoring factory defaults Switching Automatic Gain Control (AGC) on or off When realigning the readhead, reinstalling the system, or in the case of continued calibration failure, factory defaults should be restored. To switch the AGC on or off, press and hold the CAL button on the interface for > 3 seconds. The CAL LED on the readhead will be illuminated when AGC is active. -
Page 29: Dsi Quick-Start Guide
The LED on the DSi will go solid green (Initialisation status, ‘K’, goes ‘high’) when initialized. The propoZ reference (index) output will now be given when the axis passes The propoZ reference (index) output will now be given when the axis passes the propoZ output position. the propoZ output position. www.renishaw.com... -
Page 30: Dsi Connection
DSi-QUS NOTE: The remote DSi has an additional 120 ohm termination resistor on the quadrature outputs. See the DSi dual readhead angle encoder system data sheet (Renishaw part no. L-9517-9466) for more information. TONiC REXM20 / REXT20 angle encoder system installation guide... - Page 31 3. The factory default propoZ position has now been determined. Factory default INPUT 2 propoZ position NOTE: For optimum system accuracy and performance at higher speeds, ensure that the AGC is switched off (see ‘Switching Automatic Gain Control (AGC) on or off’ on page 28). www.renishaw.com...
- Page 32 Initialisation Initialisation is required at each power-up and after an error has occurred. If an alarm occurs, the DSi will automatically re-enter initialisation mode when the alarm condition is removed. For complete rotation: 1. Rotate the axis in one direction (either clockwise or anti- clockwise) until both readheads pass the reference mark.
- Page 33 NOTE: You can select a new propoZ position at any time when the LED is solid green, simply by pressing the propoZ button. 5. Small black adhesive covers are provided for the propoZ button and head orientation switch to reduce ingress of dust. www.renishaw.com...
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Page 34: System Leds
The alarm may result in axis position error, redatum to continue. Some Ti interfaces do not output overspeed alarm. See the TONiC encoder system data sheet (Renishaw part no. L-9517-9337) for details of interface configuration. This can be downloaded from our website at www.renishaw.com/tonicdownloads... - Page 35 During high-speed rotation, the blank flash of the LED as the axis passes the propoZ position may appear like a flashing green LED. If the LED continues flashing green check for correct position of the orientation switch and press and hold the propoZ button on switch-on. If you drive the axis past the propoZ position, the blank LED will appear as a 0.25 second flash. On recalibration, the old propoZ position will be lost. www.renishaw.com...
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Page 36: Output Signals
P and Q limit actuators are not suitable for ring encoder installations. Limit switch signal detail is included here for information only. Please contact your local Renishaw representative if you require limits on your rotary installation. Becomes alarm (E+) for Ti options E, F, G, H The TONiC interface must be configured for line driven alarm. -
Page 37: Speed
Angular speed depends on ring diameter. Use the following equation to convert to rev/min. V × 1000 × 60 Angular speed (rev/min) = Where V = maximum linear speed (m/s) and D = external diameter of REXM/ REXT ring (mm) π D www.renishaw.com... -
Page 38: Electrical Connections
Electrical connections Grounding and shielding TONiC system and local DSi Inner shield Customer Ti interface electronics TONiC readhead Extension cable Output signals Ti interface TONiC readhead Outer shield IMPORTANT: The outer shield should be connected to the machine earth (Field Ground). The inner shield should be connected to 0 V at the receiving electronics only. Care should be taken to ensure that the inner and outer shields are insulated from each other. - Page 39 If the inner and outer shields are connected together, this will cause a short between 0 V and earth, which could cause electrical noise issues NOTE: Maximum cable lengths as detailed in ‘General specifications’ on page 43. www.renishaw.com...
- Page 40 Recommended signal termination Digital outputs Customer 220 pF electronics A B Z E + Cable Z = 120R 120R A B Z E − 220 pF Standard RS422A line receiver circuitry The capacitors are recommended for improved noise immunity Initialisation status output < 25 V NOTE: Select the resistor R so that the maximum current does not exceed 20 mA.
- Page 41 The 10 ohm resistor minimises current flow due to different 0 V potentials. Customer electronics Ti interface TONiC readhead Output signals 5 VS 0 VS 10 Ω Ti interface TONiC readhead 5 VS 0 VS External power supply www.renishaw.com...
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Page 42: Dsi Output Specifications
DSi output specifications Digital output signals Form - Square wave differential line driver to EIA RS422A Incremental Alarm Line driven 2 channels A and B in quadrature (90° phase shifted) (Asynchronous pulse) Signal period P > 15 ms An alarm is asserted when either TONiC encoder goes into an alarm condition, or when the DSi detects Resolution S that a miscount has occurred. -
Page 43: General Specifications
Ti interface to DSi (remote version) and DSi to controller 25 m (with 15 to 20 MHz clocked output) 30 m (with ≤ 14 MHz clocked output) 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. -
Page 44: Rexm20/Rext20 Ring Specifications
REXM20/REXT20 ring specifications Pitch 20 μm Material 303 /304 stainless steel Coefficient of thermal expansion (at 20 °C) 15.5 ±0.5 µm/m/°C TONiC REXM20 / REXT20 angle encoder system installation guide ™... - Page 45 +44 (0) 1453 524524 uk@renishaw.com © 2007–2024 Renishaw plc. All rights reserved. This document may not be copied or reproduced in whole or in part, or transferred to any other WHILE CONSIDERABLE EFFORT WAS MADE TO VERIFY THE ACCURACY OF THIS media or language by any means, without the prior written permission of Renishaw.