TONiC DOP (dual output) encoder system

Transcription

1 L F TONiC DOP (dual output) encoder system Renishaw s TONiC series encoders are now available with simultaneous dual output interfacing. The robust DOP interface can be situated up to 10 m from the TONiC readhead and offers simultaneous analogue and digital outputs with interpolation to 1 nm resolution. Digital outputs are clocked for optimised speed performance at all resolutions for industry-standard controllers. The readhead is complemented by the latest evolution of RGSZ20 gold tape scale, REXM ultra-high accuracy angle encoder and RTLC/FASTRACK scale system with bi-directional optical IN-TRAC reference marks, in addition to established RSLM stainless steel scale, RELM high accuracy ZeroMet low expansion, high stability scale and RESM rotary rings. For ultimate reliability and high dirt immunity, TONiC readheads incorporate third-generation 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 cyclic error giving smoother velocity control for improved scanning performance and increased positional stability. Compact readhead (35 x 13.5 x 10 mm) Detachable DOP interface with integral interpolation to 1 nm resolution ( arc seconds) and simultaneous digital and analogue outputs Compatible with RGSZ20 gold tape scale, RTLC/FASTRACK scale system, RSLM, RELM, RESM, RESD and REXM with customer selectable IN-TRAC auto-phase optical reference mark (datum) Third-generation filtering optics optimised for even lower noise (jitter) Dynamic signal processing inside the readhead, provides ultra-low cyclic error of typically ±30 nm Auto Gain Control ensures consistent signal strength for long-term reliability Increased ride height tolerance and integral set up LED for ease of installation Maximum speed to 10 m/s (3.24 m/s at 0.1 µm resolution) Integral dual limits (linear only) Operating temperature to 70 C

2 TONiC readhead installation drawing 2 mounting holes M2.5 through, counterbored Ø3 x 2.75 deep from alternative mounting face Reference mark selector (A ) (Dimensions as P limit) 3 Reference mark selector sensor position P and Q limit switch sensor position Forward direction of readhead relative to scale 3.75 ±0.5 (Yaw tol. ±0.4 ) 0.25 Dimensions and tolerances in mm (Roll tol. ±0.5 ) P limit magnet (A ) R>20 Dynamic bend radius R>10 Static bend radius 6 min Optical centreline (incremental and reference mark) Set-up LED CAL/AGC LED 6.75 ref Q limit magnet (A ) (Dimensions as P limit) Recommended mounting faces 4.25 Alternative mounting face * Ø 4.25 ± A 2 mounting holes M2.5 through, counterbored Ø3 x 2.3 deep both sides NOTE: The recommended thread engagement is 5 min (7.5 including counterbore). The recommended tightening torque is between 0.25 and 0.4 Nm. (Pitch tol. ±1 ) 0.6 Detail A Scale reading surface 1.5* 4.8* Scale thickness Connects to Ti interface Readhead to scale clearance Rideheight 2.1 ±0.15 * Dimensions measured from substrate. = Extent of mounting faces. Bolted reference mark selector magnet and limit magnet available. See relevant TONiC Installation guide for details. NOTES: RGSZ20 only shown. For detailed installation drawings, refer to relevant TONiC Installation guide or Data sheet. External magnetic fields greater than 6 mt, in the vicinity of the readhead, may cause false activation of the limit and reference sensors. DOP installation drawing Dimensions and tolerances in mm Ø3.5 mounting holes for M3 cap screws and star washers or alternative Calibration button PORT NOT CONNECTED UNC hex standoff 2 positions Output 26 way high density D-type plug Readhead cable Cable exit 12.4 Access hatch for readhead cable connection Mounting for 35 mm DIN rail (EN5022) External earthing tag 2.8 (0.11 inch)

3 General specifications Power supply 5V ±10% Readhead only <100 ma System <275 ma (typical) 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 120 Ω. For analogue outputs, a further 20 ma will be drawn when terminated with 120 Ω. Power from a 5 V dc supply complying with the requirements for SELV of standard IEC BS EN Ripple 200 mvpp frequency up to 500 khz Temperature (system) Storage 20 C to +70 C Operating 0 C to +70 C Humidity (system) 95% relative humidity (non-condensing) to EN Sealing (readhead) (interface) Acceleration (readhead) Shock (system) IP40 IP30 Operating 500 m/s², 3 axes Non-operating 1000 m/s², 6 ms, ½ sine, 3 axes Vibration (system) Operating 100 m/s² 55 Hz to 2000 Hz, 3 axes Mass Readhead 10 g Interface 205 g Cable 26 g/m EMC compliance (system) BS EN : 2006 Environmental Readhead cable Compliant with EU Directive 2002/95/EC (RoHS) Double-shielded, outside diameter 4.25 ±0.25 mm Flex life >20 x 10 6 cycles at 20 mm bend radius UL recognised component Minimum receiver clock frequency (MHz) DOP µm DOP µm DOP µm DOP µm DOP µm Maximum speed (m/s) DOP nm DOP nm DOP nm DOP nm DOP10KD 2 nm DOP20KD 1 nm Analogue output 10 (-3dB) Angular speed depends on ring diameter use the following equation to convert to rev/min. Angular speed (rev/min) = V π D Where V = maximum linear speed (m/s) and D = external diameter of RESM or REXM (mm). 3

4 System features Reference mark Form Selection Repeatability IN-TRAC reference mark, directly in incremental track. Refer to RGSZ, RTLC/FASTRACK, RELM, RSLM, RESM, RESD or REXM Data sheets for reference mark location. Bi-directionally repeatable across full speed and temperature range. Electronically phased, requires no physical adjustment. T1xx0: Single reference mark selection by magnetic actuator (A ), customer positioned. T1xx1 and T2xx1: No selector required, all reference marks output. Unit of resolution repeatability over full operating temperature and speed. Dual limit switches (linear systems only) Form Magnetic actuators for P and Q limit switches 10 mm P limit, North pole facing A mm Q limit, South pole facing A mm P limit, North pole facing A mm Q limit, South pole facing A mm P limit, North pole facing A mm Q limit, South pole facing A Trigger point Leading edge of magnet from direction of travel. Trigger point tolerance Readhead direction of travel 3 mm tolerance of trigger point (RGSZ scale shown) Nominal trigger point Mounting Position Repeatability Self-adhesive. Customer placed at desired locations. <0.1 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. 4

5 Connections to DOP output Function Output signals Signal Pin Power 5 V Power 26 5 V Sense 18 0 V Power 9 0 V Sense 8 Incremental signals A+ 24 RS422A digital A- 6 B+ 7 B- 16 Analogue Cosine V V 1-19 Sine V V 2-11 Reference mark Z+ 15 RS422A digital Z- 23 Analogue V V 0-20 Alarm E+ 25 RS422A digital E- 17 Limits P 4 Open collector Q 13 Readhead set-up X 10 Shield Inner shield Not connected Outer shield Case 26 pin high density D-type plug Electrical connections TONiC DOP system grounding and shielding Readhead Inner shield Outer shield Interface Customer electronics 5 V 0 V Output signals Maximum cable length Readhead to interface: Interface to controller: 10 m Receiver clock frequency (MHz) Dependent on output frequency. See table below for details. Maximum cable length (m) 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. NOTE: The external earthing tag on the interface should be used when mounting the interface on a DIN rail. 40 to <40 50 analogue 50 Recommended signal termination Digital outputs 0 V Interface A B Z E+ 220 pf Customer electronics Limit outputs 5 to 24 V Analogue outputs V 0 V 1 V 2 + Cable Z 0 = 120R 120R P Q R* V 0 V 1 V 2-120R A B Z E- 220 pf *Select R so max current does not exceed 20 ma. Alternatively, use a suitable relay or opto-isolator. 0 V Standard RS422A line receiver circuitry. Capacitors recommended for improved noise immunity. 5

6 Output specifications Digital output signals Form Square wave differential line driver to EIA RS422A (except limits P and Q) Analogue output signals NOTE: Analogue signals are also available direct from all TONiC readheads Incremental 2 channels A and B in quadrature (90 phase shifted) Model P (µm) S (µm) Incremental 2 channels V 1 and V 2 differential sinusoids in quadrature (90 phase shifted) DOP A B Signal period P Resolution S DOP DOP DOP DOP DOP DOP DOP (V 1 +)-(V 1 -) (V 2 +)-(V 2 -) 20 µm to 1.35 Vpp with green LED indication (readhead) and 120R termination. Centred on 2.5 V. DOP DOP10KD DOP20KD Reference Reference Z Synchronised pulse Z, duration as resolution 0.8 to 1.2 Vpp Wide reference = (V 0 +)-(V 0 -) (nom) Bi-directionally repeatable Differential pulse V 0 centred on 45 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. Limits Open collector output, asynchronous pulse Active high or Active low P Q Repeatability <0.1 mm P Q Repeatability <0.1 mm ~ Length of limit actuator ~ Length of limit actuator Alarm Asynchronous pulse Line driven E >15 ms 3-state alarm (option) Alarm asserted when signal level is less than 20% or greater than 135%. Alarm is also asserted if readhead speed is too high for reliable operation. Differentially transmitted signals forced open circuit for >15 ms when alarm conditions valid. Set-up* 1 Voltage at X Set-up signal voltage proportional to incremental signal amplitude. 0 0 Signal level 100% * Set-up signal as shown is not present during calibration routine. Inverse signals not shown for clarity. 6

7 T1xxx linear readhead Compatible with RGSZ20, RTLC, RSLM or RELM scale. DOP interface Compatible with all TONiC readheads Readhead part number T A Interface part number DOP 0200 A 20 A Series T = TONiC Series DOP = TONiC dual output Scale form 1 = Linear Readhead type 0 = Standard Scale type compatibility 0 = RGSZ20/RGSN20 1 = RSLM/RELM 3 = RTLC 4 = RGSZ20-P/RGSN20-P Reference mark 0 = Output with selector only 1 = All reference marks are output Cable length 05 = 0.5 m 10 = 1 m 15 = 1.5 m 30 = 3 m 50 = 5 m 99 = 10 m Cable termination A = Standard mini connector to mate with DOP interface T2xxx rotary readhead Compatible with RESM, RESD and REXM rings Interpolation factor/resolution* 0004 = 5 µm 0020 = 1 µm 0040 = 0.5 µm 0100 = 0.2 µm 0200 = 0.1 µm 0400 = 50 nm 1000 = 20 nm 2000 = 10 nm 4000 = 5 nm 10KD = 2 nm 20KD = 1 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 Minimum receiver clock frequency 50, 40, 25, 20, 12, 10, 08, 06, 04, 01 (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 * Contact Renishaw for other interpolation factors. Wide reference mark not available as DOP0004 (5 µm) interfaces. Readhead part number T I - 15 A Series T = TONiC Scale form 2 = Rotary Readhead type 0 = Standard Ring diameter 0 = RESM/REXM >135 mm 1 = RESM/REXM 60 to 135 mm 2 = RESM/REXM <60 mm 4 = RGSZ partial arc >135 mm 5 = RGSZ partial arc <135 mm Reference mark 0 = Customer selectable reference mark 1 = All reference marks are output (rotary standard) Cable length 05 = 0.5 m 10 = 1 m 15 = 1.5 m 30 = 3 m 50 = 5 m 99 = 10 m Cable termination A = Standard mini connector to mate with DOP interface Please contact your local Renishaw representative if you require a partial arc application 7

8 Renishaw plc New Mills, Wotton-under-Edge, Gloucestershire GL12 8JR United Kingdom T +44 (0) F +44 (0) E uk@renishaw.com TONiC compatible products: RGSZ20 T100x RGSZ Installation guide M Data sheet L RELM T101x RSLM/RELM Installation guide M Data sheet L RSLM T101x RSLM/RELM Installation guide M Data sheet L RTLC/FASTRACK T103x RTLC/FASTRACK Installation guide M Data sheet L TONiC RTLC-S T103x RTLC-S Installation guide M Data sheet L T1xxx T2xxx RESM TONiC T20x1 RESM Installation guide M Data sheet L DOP (dual output) encoder system Installation guide M REXM T20x1 REXM Installation guide M Data sheet L RGSZ20 Partial arc Contact your local Renishaw representative for more information RESD T20x1 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 1117 *L *