TONiC UHV encoder system

Transcription

1 L B TONiC UHV encoder system TONiC UHV encoder offers all the benefits of the established TONiC linear and angle encoder systems, in a readhead that has been designed and constructed using UltraHigh Vacuum compatible materials and processes. The TONiC UHV readhead is complemented by the latest evolution of RGSZ20 gold tape scale, along with a range of highly accurate linear and angle encoder scales, all featuring optical INTRAC reference marks, easy installation, rugged construction and proven clean RGA spectra. For ultimate reliability and high immunity to optical degradation,tonic UHV readheads incorporate thirdgeneration filtering optics, tuned for even lower noise (jitter), further enhanced by dynamic signal processing including Auto Gain Control and Auto Offset Control. The result is low subdivisional error (SDE) giving smoother velocity control for improved scanning performance and increased positional stability. TONiC UHV readheads also feature a detachable analogue or digital interface in the form of a robust, convenient connector that can be located up to m from the readhead. The interface offers digital interpolation to nm resolution, with clocked outputs for optimised speed performance at all resolutions for industrystandard controllers. The readhead carries an integral setup LED that enables quick and easy installation. All of these readheads are supplied with an RFI screened UHV compatible cable as standard. Clean RGA Low outgassing rates High bakeout temperature of 20 C Low power consumption readheads Noncontact open optical system Resolution to nm Dynamic signal processing provides ultra low cyclic error of typically ±30 nm Auto Gain Control ensures constant signal strength for long term reliability Compatible with RGSZ20 gold scale, FASTRACK/RTLC scale system, RSLM, RELM, RESM and REXM

2 TONiC UHV readhead installation drawing Dimensions and tolerances in mm 2 off mounting holes M2.5 through, counterbored Ø3 x 2.75 deep from alternative mounting face 8 Optical centreline (incremental and reference mark) 3 INTRAC reference mark selector = (A965303) (Dimensions as P limit) ±0.5 (Yaw tol. ±0. ) 0.25 (Roll tol. ±0.5 ) * * 3 Q limit magnet = (A ) (Dimensions as P limit) 5 22 Recommended Q limit trigger point mounting faces 29 P limit trigger point P limit magnet = (A ) selector sensor position >R Static bend radius Ø3.0 approx. min P and Q limit switch sensor position Setup LED CAL/AGC LED 2 off mounting holes M2.5 through, counterbored Ø3 x 2.3 deep both sides (Pitch tol. ± ) A Alternative mounting face.5 Detail A Scale reading surface 2.3 Scale thickness Optical centreline marker Readhead to scale clearance Rideheight 2. ±0.5 9 Connects to Ti interface *Extent of mounting faces. = Bolted reference mark selector magnet and limit magnet available. See relevant TONiC Installation guide for details. NOTE: RGSZ20 only shown. For detailed installation drawings, refer to relevant TONiC Installation guide or Data sheet. Ti/TD interface dimension drawing Dimensions and tolerances in mm 67 Diagnostic LED (Ti000 Ti20KD and TD000 TD000) CAL/AGC push switch access hole Ø2. 62 Requires 2 mm hex key >R20 Dynamic bend radius >R Static bend radius 6 min Cover plate 0 UNC x 2

3 General specifications Power supply 5V ±% Readhead only <0 ma T6xx/T26xx Ti0000 <0 ma T6xx/T26xx Ti000 Ti20KD or TD000 TD000 <200 ma NOTE: Current consumption figures refer to unterminated systems. For digital outputs, a further 25 ma per channel pair (eg A, A) will be drawn when terminated with 20R. For analogue outputs, a further 20 ma in total will be drawn when terminated with 20R. Power from a 5 V dc supply complying with the requirements for SELV of standard EN (IEC) Ripple 200 mvpp frequency up to 500 khz Temperature (system) Storage 20 C to 70 C Operating 0 C to 70 C (readhead) Bakeout 20 C Humidity (system) Sealing (readhead) (interface) Rated up to 0 C, 95% relative humidity (noncondensing) IP20 IP20 Acceleration (readhead) Operating 500 m/s² BS EN :993 Shock (system) Operating 500 m/s², ms, ½ sine BS EN :993 Vibration (system) Operating 0 m/s² 55 Hz to 2000 Hz BS EN :996 Mass Readhead g Interface 0 g Cable g/m EMC compliance (system) BS EN 6326: 2006 Environmental Readhead cable Compliant with EU Directive 20/65/EU (RoHS) Tinned copper braided single screen. FEP core insulation Speed Minimum receiver Maximum speed (m/s) clock frequency (MHz) Ti000 5 µm Ti0020 µm Ti µm Ti µm Ti µm Ti nm Ti00 20 nm Ti2000 nm Ti000 5 nm TiKD 2 nm Ti20KD nm Analogue output (3dB) NOTE: TD interface maximum speeds are resolution dependent as defined above. Angular speed depends on ring diameter use the following equation to convert to rev/min. Angular speed (rev/min) = V x 00 x 60 p D Where V = maximum linear speed (m/s) and D = external diameter of RESM or REXM (mm)

4 System features Form INTRAC reference mark, directly in incremental track Refer to RGSZ, FASTRACK/RTLC, RELM, RSLM, RESM, RESD or REXM Data sheets for reference mark location. Bidirectionally repeatable across full speed and temperature range. Electronically phased, requires no physical adjustment. Selection T6x0: Single reference mark selection by magnetic actuator (self adhesive A or bolted A ), customer positioned. T6x and T26x: No selector required, all reference marks output. Unit of resolution repeatability, over full operating temperature and speed. Dual limit switches (linear systems only, not available on TD interfaces) Form Magnetic actuators for P and Q limit switches Selfadhesive Bolted mm P limit A A mm Q limit A A mm P limit A mm Q limit A mm P limit A mm Q limit A Trigger point Leading edge of magnet from direction of travel. Trigger point tolerance Readhead direction of travel 3 mm tolerance of trigger point Nominal trigger point (RGSZ scale shown) Mounting Position Selfadhesive (same as RGSZS scale) or bolted. Customer placed at desired locations. <0. mm Dynamic signal processing Real time signal conditioning for optimized performance across a range of operating conditions. Automatic Gain Control (AGC) Automatic Offset Control (AOC) Ultra low cyclic error of typically ±30 nm. Calibration Simple calibration at the press of a button, no physical adjustment required. Optimization of incremental and reference mark signals. TD dual resolution interface Allows output to be switched between two resolutions. NOTE: It is recommended that movement should be halted before switching resolutions. See part number section for details of available resolutions. No limit outputs.

5 RGA results Test schedule A quadrupole mass spectrometer (AccuQuad 200 RGA), set to 200AMU scan range, was used to collect RGA (residual gas analysis) data and to measure total chamber pressure. After initial conditioning of the system, a background spectrum was recorded together with the total pressure in the test chamber. The component was placed in the vacuum chamber (0.05 m 3 ) and the system was then pumped using an KJL Lion 802 (800/s) diode ion pump and a Divac diaphragm pump at ambient temperature for 2 hours, after which a background scan and the total pressure in the test chamber were recorded again. If the system pressure was better than 5 x 9 mbar, the test specimen was baked at 20 C for 8 hours. The system was then allowed to cool to ambient temperature before a final mass spectrum and the total pressure in the test chamber were recorded. These final RGA scans are shown below. NOTE: Exact reproduction of these results should not be expected, as RGA data depends on many factors including environmental factors and initial chamber conditions. However, the data is fully representative of vacuum performance. TONiC readhead with.0 m cable after bakeout (total pressure = 9.0 x mbar) Mass/AMU RGSZS linear scale (300 mm length) after bakeout (total pressure =.69 x mbar) Mass/AMU RESR (Ø5 mm) after bakeout (total pressure = 7.76 x mbar) Partial pressure/mbar Partial pressure/mbar Partial pressure/mbar RSLM linear scale (80 mm length) with 2 clips and clamp after bakeout (total pressure = 3.0 x mbar) Partial pressure/mbar Mass/AMU Mass/AMU

6 Output signals Digital outputs Ti000 Ti20KD Interface TD000 TD000 Function Signal Pin Pin Analogue outputs Readhead Txxx/2xxx Interface Ti0000 Function Signal Colour Pin Power 5 V 7, 8 7, 8 Power 5 V Brown, 5 0 V 2, 9 2, 9 0 V White 2, 3 Incremental A 6 6 Incremental Cosine V Red Blue 9 B Sine V 2 Yellow Green 2 Z 2 2 V 0 Violet Grey 3 Limits P Limits V p Pink 7 Q > V q Black 8 Setup X Setup V x Clear 6 Alarm E 3 3 Remote CAL Shield CAL Inner Orange Green/Yellow* Resolution switching > Outer Outer screen Case Shield Inner *Inner shield is connected to 0 V inside the Ti/TD interface Outer Case Case Becomes alarm (E) for Ti options E, F, G, H The alarm signal can be output as a line driver signal or 3state. Please select the preferred option at time of ordering. > On TD interfaces pin should be connected to 0 V to switch to lower resolution. 5 pin D type connector Electrical connections Grounding and shielding Readhead Vacuum chamber Feedthrough connector TONiC interface Extension cable Customer electronics 5 V 0 V power Output signals Shield Inner shield (if fitted) Outer shield 0 V IMPORTANT: The outer shield should be connected to the machine earth (Field Ground). The inner shield should be connected to 0 V at receiving electronics only. Care should be taken to ensure that the inner and outer shields are insulated from each other. 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. Recommended signal termination Digital outputs Interface A B Z E Customer electronics Maximum cable length Readhead to interface: m Interface to controller: Dependent on clocked output option. See table below for details. Interface Clocked output option (MHz) 0 to 50 <0 analogue Maximum cable length (m) Single ended alarm signal termination (Ti options A, B, C, D) 5 V k Customer electronics Cable Z 0 = 20R 20R k8 E 0R A B Z E k7 0nF Standard RS22A line receiver circuitry Limit outputs (Ti interface only) 5 to 2 V V p V q P Q R* *Select R so max current does not exceed 20 ma Alternatively, use a suitable relay or optoisolator Analogue outputs V 0 V V 2 V 0 V V 2 20R

7 Output specifications Digital output signals Interface models Ti000 Ti20KD and TD000 TD000 Form Square wave differential line driver to EIA RS22A (except limits P and Q) Analogue output signals Interface model Ti0000 and direct output from all readheads Incremental 2 channels A and B in quadrature (90 phase shifted) Model P (µm) S (µm) Incremental 2 channels V and V 2 differential sinusoids in quadrature, centred on ~.65 V (90 phase shifted) Ti Signal period P Resolution S Ti0020 Ti µm A B Ti00 Ti0200 Ti000 Ti00 Ti (V )(V ) (V 2 )(V 2 ) to.35 Vpp with green LED indication (readhead) and 20R termination. NOTE: Ti0000A00V centred on 2.5 V Ti TiKD Ti20KD Reference Reference Z Synchronised pulse Z, duration as resolution 0.8 to.2 Vpp Wide reference = (V 0 )(V 0 ) (nom) Bidirectionally repeatable Differential pulse V 0 centred on 5 Z Synchronised pulse Z, duration as signal period NOTE: Select standard or wide reference at time of ordering, to match the requirements of the controller being used. Wide reference mark not available on Ti000. Limits Open collector output, asynchronous pulse Limits Open collector output, asynchronous pulse Digital Ti interfaces only Active high or Active low Ti0000 interface only Active high Direct output from readhead Active low P Q <0. mm P Q <0. mm V p V q <0. mm V p V q <0. mm ~ Length of limit actuator NOTE: No limits on TD interfaces. P limit becomes E for Ti options E, F, G and H. Alarm Asynchronous pulse ~ Length of limit actuator ~ Length of limit actuator ~ Length of limit actuator NOTE: Ti0000 interface contains a transistor to invert the readhead s active low signal to give an active high output. Remote CAL operation (analogue versions only) E >5 ms E output only for Ti options A, B, C and D. Alarm asserted when signal level is less than 20% or greater than 35%. Alarm is also asserted if readhead speed is too high for reliable operation. or 3state alarm Differentially transmitted signals forced open circuit for >5 ms when alarm conditions valid. CAL 0 V All Ti and TD interfaces include a push button switch to enable CAL/AGC features. Remote operation of the CAL/AGC is possible via pin of analogue Ti0000 interfaces. For applications where no interface is used, remote operation of CAL/AGC is essential. Setup* Setup* 3.3 V (nom) Voltage at X Voltage at V X 0 0 Signal level 0% % Signal level 70% 0% Setup signal voltage proportional to incremental signal amplitude Between 50% and 70% signal level, V X is a duty cycle when encoder is moved, 20 µm duration. Time spent at 3.3 V increases with incremental signal level. At >70% signal level V X is nominal 3.3 V. Inverse signals not shown for clarity * Setup signals as shown are not present during calibration routine

8 T6xx linear readhead Compatible with RGSZ20, RTLC, RSLM or RELM scale Readhead part number Series T = TONiC Scale form = Linear Readhead type 6 = Vacuum T M Ti interface Compatible with all TONiC readheads Interface part numbers Analogue: Options A = dual active high limits V = 2V5 Vmid dual active high limits Digital: Ti 0000 A 00 A Ti 0200 A 20 A Scale type compatibility 0 = RGSZ20/RGSN20 = RSLM/RELM 3 = RTLC/ RTLCS 0 = Output with selector only = All reference marks are output Cable length = m 5 =.5 m 30 = 3 m 50 = 5 m 99 = m Cable termination M = Vacuum cable T26xx rotary readhead Compatible with RESM, RESD and REXM rings Readhead part number Series T = TONiC Scale form 2 = Rotary T M Series Ti = TONiC Interpolation factor/resolution* 000 = 5 µm 00 = 20 nm 0020 = µm 2000 = nm 000 = 0.5 µm 000 = 5 nm 00 = 0.2 µm KD = 2 nm 0200 = 0. µm 20KD = nm 000 = 50 nm Alarm format and conditions A = Line driven E output; All alarms B = Line driven E output; low signal, high signal E = 3 state; All alarms F = 3 state; low signal, high signal Clocked output option 50, 0, 25, 20, 2,, 08, 06, 0, 0 (MHz) Options A = P/Q limits active high, standard reference mark B = P/Q limits active low, standard reference mark C = P/Q limits active high, wide reference mark D = P/Q limits active low, wide reference mark E = Q limit only, differential alarm active high, standard reference mark F = Q limit only, differential alarm active low, standard reference mark G = Q limit only, differential alarm active high, wide reference mark H = Q limit only, differential alarm active low, wide reference mark Readhead type 6 = Vacuum Dual resolution: TD 000 A 20 A Ring diameter 0 = RESM/REXM/RESD >35 mm = RESM/REXM/RESD 60 to 35 mm 2 = RESM/REXM/RESD <60 mm = RGSZ/RGSN partial arc >35 mm 5 = RGSZ/RGSN partial arc <35 mm 0 = Customer selectable reference mark = All reference marks are output (rotary standard) Cable length = m 5 =.5 m 30 = 3 m 50 = 5 m 99 = m Cable termination M = Vacuum cable Series TD = TONiC dual resolution Interpolation factor/resolution* Pin open Pin = 0 V 000 = 5 nm nm 2000 = nm 20 nm 00 = 20 nm 0 nm 000 = 50 nm 0. µm 0200 = 0. µm 0.2 µm 000 = 0.5 µm µm Alarm format and conditions A = Line driven, differential output; All alarms B = Line driven, differential output; low signal, high signal E = 3 state; All alarms F = 3 state; low signal, high signal Clocked output option 50, 0, 25, 20, 2,, 08, 06, 0, 0 (MHz) Options A = Standard reference mark B = Wide reference mark NOTE: Ti and TD interfaces are not UHV compatible Please contact your local Renishaw representative if you require a partial arc application *Contact Renishaw for other interpolation factors. When using with a DSi, the interface should be configured with line driven alarm outputs. Do not use Ti interfaces that have a faster clocked output option than the selected DSi. Wide reference mark not available on Ti000 (5 µm) interfaces.

9 Renishaw plc New Mills, WottonunderEdge, Gloucestershire GL2 8JR United Kingdom T (0) F (0) E uk@renishaw.com TONiC UHV compatible products: RGSZ20 T0x RGSZ Installation guide M Data sheet L RELM Tx RSLM/RELM Installation guide M Data sheet L RSLM Tx RSLM/RELM Installation guide M Data sheet L FASTRACK/RTLC T3x FASTRACK/RTLC Installation guide M Data sheet L95797 TONiC RTLCS T3x RTLCS Installation guide M Data sheet L95797 Txxx T2xxx RESM TONiC T20x RESM Installation guide M Data sheet L95795 DOP (dual output) encoder system Installation guide M Data sheet L9579 REXM T20x REXM Installation guide M Data sheet L RGSZ20 Partial arc TONiC DSi DSi dual readhead rotary encoder system Installation guide M Data sheet L Contact your local Renishaw representative for more information RESD T20x RESD Installation guide M Data sheet L For worldwide contact details, please visit our main website at 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. RENISHAW and the probe symbol used in the RENISHAW logo are registered trade marks of Renishaw plc in the United Kingdom and other countries. apply innovation and names and designations of other Renishaw products and technologies are trade marks of Renishaw plc or its subsidiaries Renishaw plc All rights reserved Issued 3 *L *