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MP700 PROBE SYSTEM - Installation and User's Guide

1. Figure 5 22 Switch SW3 Settings RENISHAW 5 38 Maintenance And Adjustment MI12 Machine Interface Unit Fuse Replacement To replace a fuse carry out the following refer to Figures 5 20 and 5 23 1 Release and remove the four screws item 1 Figure 5 20 and four washers 2 securing the top cover 3 to the MI12 Machine Interface Unit 4 Remove the top cover 2 from the MI12 Machine Interface Unit 4 Obtain a replacement fuse to the correct specification refer to Figure 5 23 for fuse location and identification number Fuse Identification Number Milliamps mA Part Number EE NN Remove defective fuse by easing it gently from its location within the PCB Assemble replacement fuse into vacant location on the PCB Replace top cover item 3 Figure 5 20 and secure with four screws 1 and four washers 2 RENISHAW Maintenance And Adjustment 5 39 Figure 5 23 MI12 Machine Interface Unit Fuse Location RENISHAWE 5 40 Maintenance And Adjustment THIS PAGE LEFT INTENTIONALLY BLANK RENISHAWE Troubleshooting 6 1 6 Troubleshooting This chapter provides information on the faults you are most likely to incur over the life of your MP700 Probe
2. 5 19 Removal of the Window and Label from the OMM 5 19 Adjustment of the OMM Range Selection Switch 5 20 Replacement of the OMM Label and Window 5 22 Replacing a Faulty OMM Printed Circuit Board 5 24 Maintenance and Adjustment of the Optical Machine Interface 5 25 OMI Range Selection and Output Configuration 5 25 Removal of the Window and Label from the OMI 5 25 Adjustment of the OMI Range Selector SW1 5 30 Replacement of the OMI Label and Window 5 32 Replacing an OMI Fuse 5 34 Maintenance and Adjustment of the MI12 Machine Interface Unit 5 35 MI12 Machine Interface Unit Switch Settings 5 35 MI12 Machine Interface Unit Fuse Replacement 5 38 RENISHAW 5 2 Maintenance And Adjustment Maintenance and Adjustment of the MP700 Machine Spindle Probe Diaphragm Removal Inspection Replacement and Renewal Although Renishaw probes require little maintenance the performance of the probe will be adversely affected if its inner working parts become contaminated with d
3. As the strain gauges are very sensitive and therefore susceptible to changes in resistance caused by temperature variation and probe orientation the probe circuitry constantly balances their output This process known as autozeroing prevents the probe from false triggering and eliminates measurement inaccuracies Calibration data as well as the physical position of the stylus ball are not effected by autozeroing The auto zero used to normalise the wide variations in resistance caused by temperature sensitivity is configured for both slow and fast modes of operation The fast auto zero is used when the probe is initially turned on and normalises any variations in gauge resistance The slow auto zero is used to ensure the tracking of any temperature variations and is active whenever the probe is operational RENISHAWE System Description 3 7 A Z Amplication control auto zeroing Threshold control SG1 Reset f control SG2 SG3 Measurement Sensor Output Figure 3 4 Probe Head Diagrammatic RENISHAWE 3 8 System Description Stylus On centre Adjustment Plate The stylus on centre adjustment plate item 14 Figure 3 3 provides the mechanism necessary to align the probe stylus with the spindle centre line of the machine tool Refer to Chapter 5 Maintenance and Adjustment The Optical Module Probe OMP The OMP item 6 Figure 3 3 comprises the following parts OMP s
4. 1 6 a Potential Error Sources 1 11 Probing Techniques a Fixed Error Sources 1 11 MP700 Probe sse 1 7 Systematic Error Sources 1 12 a How A Probe Works 1 9 The Kinematic Location 1 9 RENISHAWE 1 2 Fundamentals Workpiece Setup Workpiece setup is the determination of the part location relative to the machine spindle such that all subsequent metal cutting operations will produce accurate results Probe Datuming General Often referred to as calibration or qualifying probe datuming involves the measurement of a calibrated feature usually a precision ring gauge or reference sphere of precisely known diameter Datuming software then compares the size of the ring gauge sphere as measured by the probe system to its calibrated size thus calculating the effective diameter of the stylus tip The effective diameter of the stylus tip will always appear to be smaller than its actual physical size This is because it includes compensation for the probe s performance characteristics as well as the machine s response time This effective diameter known as the electronic ball radius is automatically applied to each point taken by the probe added to internal measurements or subtracted from external measurem
5. 12 Interface Unit Renishaw PSU3 Power Supply Unit fitted only instances where a 24V supply is not available from the CNC controller Systems Fitted With the Optical Machine Interface The MP700 Probe System when fitted with the optional Optical Machine Interface will comprise of the following see Figure 3 2 e A Renishaw amp MP700 Spindle Probe e A Renishaw Optical Machine Interface OMI Renishaw PSU3 Power Supply Unit fitted only instances where a 24V supply is not available from the CNC controller RENISHAWE System Description 3 3 Optical Machine Module MI12 Interface Unit CNC Machine Control Optical Machine gt Interface PSU3 Power Supply Unit Stylus TL Figure 3 2 MP700 Probe System Optical Machine Interface Variant 5 3 4 System Description The MP700 Machine Spindle Probe The Renishaw MP700 Machine Spindle Probe comprises the following primary components refer to Figure 3 3 e Stylus 1 e Probe head 2 Optical Module Probe OMP 6 Stylus on centre adjustment plate 14 e Standard shank adapted to accommodate an on centre adjustment feature RENISHAW System Description 3 5 Before using probe remove diaphragm 4 shipping protector Stylus 8 Transmitting LED s 6 off Probe Head 9 Probe Status LED
6. RENISHAW Rectification Action Check probe settings in accordance with Chapter 5 Maintenance and Adjustment Reduce axial speed of probe Reduce stylus s mass Review software in accordance with manufacture s instructions Increase distance settings Review software in accordance with manufacturer s instructions Increase probing speed to a minimum of 15mm per minute Remove obstruction Check all cables Check power supply Check tightness of probe styli and probe shank Part out of position or missing Troubleshooting 6 5 PROBE CRASHES Possible Cause Probe signals are being taken from a tool setting probe Workpiece is obstructing the path of the probe Probe length offsets have been removed Probe speed is less than 15mm per minute and has prevented the probe from triggering Rectification Action Verify system functionality Review software in accordance with manufacturer s instructions Review software in accordance with manufacturer s instructions Increase speed POOR REPEATABILITY AND ACCURACY Possible Cause Swarf on part Tool change repeatability is poor Probe position has changed due to loosening of probe assembly Probe position has changed from its calibrated position by 180 or due to M19 orientation Calibration and updating of offsets is not occurring Rectification Action Remove swarf Verify probe repeatability using a single point mov
7. RENISHAWE System Description 3 17 1 Yellow LED Start Signal Indicator 4 Red LED Low Battery Indicator 2 Tricolour LED Signal Strength 5 Bicolour LED Probe Status Indicator Indicator 6 Red LED Error Indicator 3 Clear LED s 3 off Figure 3 10 Optical Machine Interface The OMI mounted on the machine tool within the 360 output envelope of the OMP is both an optical transmitter and receiver As a receiver it waits passively for and collects signals passed from the OMP These are then converted and passed directly to the CNC controller When operating as a receiver transmitter the OMI also has the capability to receive a probe start signal directly from the machine tool It transmits this signal to the OMP to effectively switch on the probe The OMI reception Rx and transmission Tx ranges can be adjusted and set by a range selection switch SW 1 item 1 Figure 3 11 Both the Rx and Tx ranges can be reduced if they become affected by optical or electro magnetic interference refer to Chapter 5 Maintenance and Adjustment The output configuration of the OMI is set by switch SW2 item 2 Figure 3 11 refer to Chapter 5 Maintenance and Adjustment RENISHAW 3 18 System Description Note OMI shown with Window and Label removed for clarity 1 Range Selection Switch SW 1 2 Switch SW2 Figure 3 11 Optical Machine Interface Switch Locations RENISHA
8. 2000 5142 02 Installation and User s Guide MP700 PROBE SYSTEM RENISHAW2 New Mills Wotton under Edge Gloucestershire GL12 8JR United Kingdom Telephone 44 01453 524524 Fax 44 01453 524901 Telex 437120 REN MET G E mail genenq renishaw co uk Internet http www renishaw com Information in this document is subject to change without notice No part of this document may be reproduced or transmitted in any form or by any means electronic or mechanical for any purpose without the express permission of Renishaw plc 1998 Renishaw plc All rights reserved RenishawQ is a registered trademark of Renishaw plc CHANGES TO EQUIPMENT Renishaw reserves the right to change its equipment without obligation to change equipment previously sold WARRANTY Equipment requiring attention under warranty must be returned to your supplier No claims will be considered where the probe has been misused or where repairs or adjustments have been attempted by unauthorised persons PATENTS Features of the Renishaw MP700 Probe System are subject to the following patents and patent applications EP 0068899 JP 1556462 US 4813151 EP 0243766 JP 24104 88 US 4817362 EP 0388993 JP 24105 88 PCT GB94 00548 EP 242747B US 4462162 This product has been tested to the following European Standards BS EN 50081 2 BS EN 50082 2 It complies with the relevant essential health and safety protection requirements of the following EC D
9. 5 Battery Cover Seal 13 Flat Point Grubscrew 4 off 6 Battery 14 Shank 7 Retaining Screw 15 Cone Point Grubscrew 2 off 8 Cover Figure 2 41 Mounting the Probe to a Shank RENISHAWE 2 76 System Installation Mounting Your Probe to Your Machine Tool Prior to mounting your probe to the machine tool it is important to Ensure that the probe is securely mounted to its shank Ensure that the diaphragm protection cover see Figures 2 40 and 2 41 has been removed from the probe please refer to The Diaphragm Protection Cover earlier in this chapter Mounting of the probe to the machine tool spindle is identical to that used for mounting your cutting tools When mounting the probe ensure that e The probe status LED is aligned such that it is visible to the Operator e Stylus on centre adjustment is performed in accordance with instructions contained in Stylus On centre Adjustment later in this chapter RENISHAW System Installation 2 77 Stylus On centre Adjustment There are two methods of stylus on centre adjustment see Figure 2 42 Stylus adjustment using the on centre adjustment plate which allows the probe to slide across the shank end face Stylus on centre adjustment using the adjustment plate optional centre ball which allows the probe to pivot on the shank and slide across the shank end face Stylus alignment need only be approximate except in the fo
10. 6 Connect the black coloured core to the OV terminal 7 Tighten connector screws to secure cores within the output terminal block 4 RENISHAWE System Installation 2 49 THIS EQUIPMENT MUST BE EARTHED NO USER SERVICEABLE PARTS INSIDE View A 1 Optical Machine Interface 2 Optical Machine Interface Cable 3 Ferrule 4 Terminal Block 5 PSU3 Power Supply Unit Figure 2 25 Connecting the OMI to the PSU3 Power Supply Unit RENISHAWE 2 50 System Installation Connecting Your System Components to Your Machine Tool Optical Machine Interface Variant Outputs from the Optical Machine Interface The Optical Machine Interface Unit OMI incorporates four opto coupled Totem Pole transistor output devices comprising Probe Status Skip Error Low Battery All outputs can be individually inverted by the configuration switch SW2 refer to Setting Up the OMI later in this chapter The four outputs are arranged in two groups see Figure 2 26 These are referred to as Group A and Group B and comprise the following e Group A comprises the Probe Status Low Battery and Error outputs Group comprises the Skip output CAUTION THE OUTPUTS ARE PROTECTED AGAINST REVERSE VOLTAGE BY DIODES ALTHOUGH SUPPLY REVERSAL WILL NOT DAMAGE THE OUTPUTS IT MAY BLOW THE FUSES The outputs are grouped in this way to enable the Skip output see Figure 2 27 to operate at a different voltage to the oth
11. This switch acts as a manual start switch and is disabled for the entire duration of MACHINE START input signals Access to switch SW1 is via the front panel of the MI12 Machine Interface Unit Switch SW2 CAUTION THE AUTOSTART SELECTION CAUSES THE SYSTEM TO SEND A START SIGNAL ONCE EVERY SECOND AND DOES NOT REQUIRE A CNC MACHINE CONTROL INPUT FOR THIS REASON IT MUST NEVER BE USED WHEN USING THE MP700 PROBE This switch is supplied factory set as shown in Figure 2 16 i e to MACHINE START with both the OMM1 and OMM switches set to the their standard settings In order that a MACHINE START signal can be initiated an input of between 4 25V at 1mA and 30V at 10mA is required between terminals 21 and 22 TTL compatible when connected between 5 and TTL output Minimum pulse width is 1ms Switch SW3 This switch enables Normally Open and Normally Closed options to be selected for SKIP and PROBE STATUS The switch is factory set to option 1 see Figure 2 17 RENISHAW 2 28 System Installation MACHINE START OMM 2 Standard Special OMM C SEP RE De te Se ed 18 Terminal Block Figure 2 16 MI12 Machine Interface Unit Switch Locations OPTION Terminals Ter
12. progressively tighten the four grubscrews as the final setting is approached 6 When the final setting is achieved 5um 0 0002 in total stylus run out or better ensure that the four flat point grubscrews 2 are fully tightened to 1 5 3 5Nm 1 1 2 6lbf ft 1 MP700 Probe 2 Flat Point Grubscrew 4 Off 3 Cone Point Grubscrew 2 Off 4 Shank Figure 5 4 Stylus On centre Adjustment Adjustment Plate Method 5 5 10 Maintenance And Adjustment Stylus On centre Adjustment Using The Centre Ball Note For applications where the stylus stem has to be parallel with the spindle centre line this centre ball method must be used Refer to Figure 5 5 1 10 11 Where necessary release the two capscrews 1 Remove the battery cover 2 Disconnect and remove the battery 4 Release and remove retaining screw 5 Remove cover 6 Visually centralise the probe relative to the shank 11 partially tighten cone point grubscrews 12 to 2 3Nm 1 47 2 2 Ibf ft Where necessary install the probe into the machine tool spindle Visually check the alignment of the stylus if adjustment is required realign stylus by capscrews 9 Tighten capscrews 9 to as near 5 1Nm 3 76 Ibf ft as possible without loosing the alignment Gradually and systematically tighten the four flat point grubscrews 10 backing off after each movement until the stylus run out is less than 2
13. 2 from the optical module probe 3 3 Disconnect and remove the battery 4 Note The use of Ni Cad rechargeable batteries is not recommended Their low capacity will give an unacceptably low life Also the battery low and exhausted trip levels will cause the battery to become over discharged 4 Obtain a new battery The following battery types may be used Manufacturer Model Number Ever Ready PP3 P I E C 6F22 Duracell MN1604 6LR61 Varta 4022 5 Install new battery into the optical module probe ensuring the correct polarity 6 Ensure the battery cover seal is correctly seated and lightly lubricate with mineral oil T Assemble the battery cover to the optical module probe and secure with two capscrews 1 torque tighten capscrews to 1 5Nm 1 1Ibf ft RENISHAW Maintenance And Adjustment 5 7 1 Capscrews 2 off 3 Optical Module Probe OMP 2 Battery Cover 4 Battery Figure 5 2 Battery Installation Renewal RENISHAW 5 8 Maintenance And Adjustment Stylus On centre Adjustment CAUTION DURING ADJUSTMENT CARE MUST BE TAKEN NOT TO ROTATE THE PROBE RELATIVE TO THE SHANK DO NOT HIT OR TAP THE PROBE DURING THE FOLLOWING PROCEDURES There are two methods of stylus on centre adjustment see Figure 5 3 Stylus on centre adjustment using the on centre adjustment plate which allows the probe to slide across the shank end face Stylus on centre adjustment using the adjust
14. AMBIENT TEMPERATURES BELOW 5C 41F OR ABOVE 60C 140F WILL REDUCE THE RANGE OF THE OMI Note The OMI Rx and Tx ranges must only be adjusted by suitably qualified personnel and only when the OMI is known to be affected by optical or electro magnetic interference Adjustment should only prove necessary in extreme cases The effective range of the OMI can be adjusted by use of the range selector switch SW1 If problems are experienced with either electrical or optical noise and the unit is installed at less than half the specified maximum range of the probe then the range selection switch can be adjusted to reduce the effective range This in turn will reduce the unit s susceptibility to noise Adjust the range selection switch to the setting shown in Figure 5 17 RENISHAW Maintenance And Adjustment 5 31 Rx 25 Tx 50 Rx 50 Tx 50 100 100 Range Selection Rx Reception Range Tx Transmission Range Switch SW1 Tx AUTO 100 START Reception Transmission Range Range 100 Off Off 100 On t 50 Off 50 Off 25 Off On 50 Off 1 2 3 tart Rx Tx MACHINE 100 50 START Figure 5 17 OMI Reception and Transmission Ranges RENISHAW 5 32 Maintenance And Adjustment Replacement of the OMI Label and
15. Following completion of the inspection program the probe can be made to switch off by either of the following two options These options are user selectable and can be selected by adjustment of the switch located within the OMP refer to Chapter 5 Maintenance and Adjustment e Optical On Time Out where a timer automatically returns the probe to standby mode if the probe is not used for 33 or 134 seconds These options are user selectable and can be selected by adjustment of the switch located within the OMP refer to Chapter 5 Maintenance and Adjustment e Optical On Optical Off where a second start signal generated by a software M code returns the OMP to the standby mode within a period of 275 milliseconds Switch off will only occur after the debounce period 4 2 or 8 4 seconds has elapsed The probe will remain off until the next switch on command Switching Off the Probe in Optical On Time Out Mode Notes A change in the orientation of the probe during a toolchange as it is returned to the carousel will cause a change in status and renew the time out period As a result the probe will remain on in the tool carousel and significantly reduce the life of the battery If battery life is critical switch the probe to Optical On Optical Off mode in accordance with Chapter 5 Maintenance and Adjustment The probe may be switched back on 300milliseconds after the time out period has elapsed and with the pro
16. OMI Cable 6 Flexible Conduit Figure 2 24 Fitting Rigid Conduit to the OMI Cable RENISHAWE 2 48 System Installation Connecting Your System Components Together Optical Machine Interface Variant Connecting the Optical Machine Interface to the PSU3 Power Supply Unit Note Further information on connecting the OMI to the PSU3 Power Supply Unit can be obtained by reading the OMI PSU3 Power Supply Unit Installation and User s Guide Publication Number H 2000 5062 To connect the OMI cable to the PSU3 Power Supply Unit carry out the following refer to Figure 2 25 1 Separate the red and black coloured cores from the main OMI cable 2 2 Obtain two bootlace ferrules 3 supplied Note It is recommended that you use a dedicated crimping tool to crimp the ferrules onto the cores of the OMI cable However where this is not available crimping can also be achieved by the use of pliers or by the action of the screw within the PSU3 output terminal block connector 3 Prepare each core as necessary then in turn push the core through the shrouded end of one of the ferrules 3 Ensuring the core wires are flush with the tip of the ferrule s copper tube crimp the ferrule onto the core by use of a dedicated crimping tool as shown in VIEW A 4 Release the connector screws within the 24V and OV terminals of the PSU3 output terminal block 4 5 Connect the red coloured core to the 24V terminal
17. Probe Head Cover 10 Battery Cover Seal Probe Head Body 11 Battery Cover Grubscrews 2 off 12 Battery Optical Module Probe 13 Centre Ball optional Receiving Diode 3 off 14 Stylus On centre Adjustment Plate Figure 3 3 The MP700 Probe RENISHAWE 3 6 System Description The Probe Head The probe head 2 comprises the following parts e Probe head cover 3 e Probe head body 4 Jacking grubscrews 5 The probe head contains a kinematic location a strain sensitive structure and an Application Specific Integrated Circuit ASIC It is sealed from the environment by twin Viton diaphragms which offer the ultimate resistance to coolant The strain sensitive structure to which the active silicon strain gauges and non strained dummy gauge are mounted is linked to the ASIC via a specially designed flexible circuit Refer to Figure 3 4 The Digital Analogue ASIC driven by a dedicated oscillator incorporates three 14 bit digital tracking converters to provide the auto zero It has full authority over the probe s operations from sequencing of the turn on to the constant datuming of the strain gauges to account for probe orientation or temperature Note To take advantage of its intrinsic gauge sensitivity the MP700 probe normalises the wide variations in the resistance of the strain gauges caused by temperature sensitivity and gauge variation by using a process known as autozeroing
18. The MP700 Probe System Optical Machine Module MI12 Machine Interface Variant The system comprises see Figure 3 A Renishaw amp MP700 Spindle Probe e A Renishaw Optical Machine Module OMM e A Renishaw MI12 Machine Interface Unit e A Renishaw PSU3 Power Supply Unit Optional Optical Machine Module MI12 Interface Unit CNC Machine Control Figure 3 The MP700 Probe System Optical Machine Module M12 Interface Variant 5 18 Before You Begin The MP700 Machine Spindle Probe At the very heart of the Renishaw MP700 Probe System is the MP700 Machine Spindle Probe see Figure 4 a next generation probe that uses active silicon strain gauges to monitor the forces generated between the stylus and the workpiece By ensuring that all triggering occurs following virtually constant pre travel regardless of probing direction the MP700 allows stylus configurations of up to 200mm 7 87 in to be used with no significant loss of accuracy The MP700 Machine Spindle Probe Mounts in the spindle of your machining centre and is fully tool changeable e Provides your machine tool with a sense of touch Thus your machine tool no longer has to operate blind and the true position of a workpiece can be rapidly acquired and converted to both tool or work offsets refer to Chapter 1 Fundamentals Acts as highly repeatable switch when latched
19. refer to Figure 2 32 However this is only possible when the skip is NOT being monitored by the machine controller The audible indicator must comply with the output transistor specification i e 50mA peak 36V peak Pulse duration is 40ms 1ms MACHINE CONTROL ve 5 to 30V ve 0V O M l 5 to 30V Orange SKIP Yellow OV Grey MACHINE CONTROL ve 5 to 30V ve 0V O M I 5 to 30V Orange SKIP Yellow OV Grey Figure 2 32 Connecting the Optical Machine Interface to an External Audible Indicator RENISHAW 2 60 System Installation Optical Machine Interface Fuses The Optical Machine Interface incorporates the following fuses see Figure 2 33 FS1 250mA 1 4 A Input Power FS2 125mA 1 8 A Output Group A PB STAT LO BATT FS3 125mA 1 8 A Output Group A ERROR FS4 62mA 1 16 A Output Group SKIP FS5 62mA 1 16 A Output Group B Each group of outputs is fuse protected on its respective ve and ve supply lines see Figure 2 34 The input power supply is fuse protected by a 250mA fuse A spare set of fuses is supplied with each OMI located in a plastic bag behind the removable label as shown in Figure 2 34 Note If an input fuse blows then it is recommended that both fuses for that group are replaced Refer to Chapter 5 Maintenance and Adjustment for instructions on how to replace a blown fuse RENISHAW System Installation 2 61 PB
20. to your machine tool controller be driven in the X and Z directional axes of your machine tool On contacting a surface with sufficient force to cause a deflection of the probe stylus the MP700 Machine Spindle Probe triggers refer to Chapter 1 Fundamentals It is this action that generates the necessary signal to halt the motion of your machine tool and allow the position of each machine axis to be read Thus although the probe itself cannot actually measure subsequent triggers allow distances between features to be accurately calculated RENISHAWE Before You Begin 19 Figure 4 The MP700 Probe 5 20 Before You Begin The Optical Machine Module OMM The OMM see Figure 5 communicates optically with the MP700 Probe and is linked to the Machine Interface Unit by way of a signal transmission power supply cable For specific information on the OMM refer to Chapter 3 System Description Further information on the OMM can be obtained by reading the Optical Machine Module Installation and User s Guide Publication No H 2000 5044 Figure 5 The Optical Machine Module RENISHAW Before You Begin 21 The Machine Interface Unit MI12 The purpose of the MI12 is to collect and convert probe signals into a form recognisable to the machine tool s CNC controller To achieve this the MI12 is connected to each of the machine tool s skip outputs sometimes kno
21. tool s 24 volt power supply as follows see Figures 2 13 and 2 14 If your machine tool does not have a 24 volt power supply obtain a Renishaw PSU3 Power Supply Unit Part No A 2019 0018 and connect to the MI12 Machine Interface Unit in accordance with Connecting the PSU3 Power Supply Unit to the MI12 Machine Interface Unit earlier in this chapter Notes It is recommended that the wires used to connect the machine tool s power supply to the MI12 Machine Interface Unit conform to DEF 61 12 part 6 type 2 BS4808 or equivalent specification The output voltage from the machine tool must be a nominal 24 volts dc unregulated 0 5 amps 1 Obtain three suitable lengths of 1 55mm nominal diameter PVC or PTFE insulated wires Each wire should contain sixteen 0 2mm diameter strands It is recommended that the following colours are used Connection Colour of Wire 2 Release and remove the gland nut 4 from the left hand gland connector 5 when looking down on the printed circuit board at the rear of the MI12 Machine Interface Unit Remove the grommet 6 and fibre washer 7 from the gland nut 3 Assemble the gland nut 4 fibre washer 7 and grommet 6 to the three wires 10 4 Insert the three wires 10 through the left hand gland connector 5 when looking down on the printed circuit board RENISHAW 2 34 System Installation WARNING TO ENSURE THE SAFETY OF ALL PERSONNEL IT IS IMPORTANT THAT THE
22. B FS4 62mA 1 16 A Output Group B Skip in a plastic bag behind removeable label shown above Figure 5 19 Replacing a Fuse Within the OMI RENISHAW Maintenance And Adjustment 5 35 Maintenance and Adjustment of the MI12 Machine Interface Unit MI12 Machine Interface Unit Switch Settings The MI12 Machine Interface Unit incorporates the following switches see Figure 5 21 It is important that where necessary each of these switches are set to suit your specific application Switch SW1 This switch acts as a manual start switch and is disabled for the entire duration of MACHINE START input signals Switch SW2 This switch is supplied factory set as shown in Figure 5 21 i e to MACHINE START with both the OMM1 and OMM switches set to the their standard settings In order that a MACHINE START signal can be initiated an input of between 4 25V at 1mA and 30V at 10mA is required between terminals 21 and 22 TTL compatible when connected between 5 and TTL output Minimum pulse width is 1ms CAUTION THE AUTO START SETTING MUST NEVER BE USED WITH THE MP700 PROBE SYSTEM The AUTO START setting which causes the system to send a start signal once every second and does not require a CNC Machine Control input should not be used with the MP700 Probe System Switch SW3 This switch enables Normally Open and Normally Closed options to be selected for SKIP and PR
23. COOLANT NEVER USE THE TIP OF A PENCIL TO ADJUST THE SWITCH UNDER NO CIRCUMSTANCES MUST THE PROBE REAR SEAL ITEM 7 FIGURE 5 6 BE REMOVED Note The probe head switch controls the time delay required by the probe to provide immunity against the effects of vibration and shock and is normally set at 8 milliseconds Reducing the time delay below 8 milliseconds will make the probe far more susceptible to unexpected triggers caused by rapid traversing or orientation The probe head switch can be adjusted to set the time delay to e 0 milliseconds 2 milliseconds e 8 milliseconds e 16 milliseconds To select the time delay setting you require move the switch to the positions shown in Figure 5 7 RENISHAWE Maintenance And Adjustment 5 15 Probe Rear Seal and Protection Cap removed for clarity Figure 5 7 Probe Switch Settings RENISHAWE 5 16 Maintenance And Adjustment Adjusting the Optical Module Probe Switch CAUTIONS DO NOT TOUCH ELECTRICAL COMPONENTS WHEN ADJUSTING SWITCH SETTINGS KEEP ALL COMPONENTS CLEAN DO NOT ALLOW THEM TO BECOME CONTAMINATED WITH MACHINING RESIDUE OR COOLANT NEVER USE THE TIP OF A PENCIL TO ADJUST THE SWITCH The switch can be used to adjust the following settings refer to Figure 5 8 The DEBOUNCE time which controls the minimum time that must elapse after sending a start signal before the optical module probe is ready to act upon another start
24. GROUNDING OF THE MI12 MACHINE INTERFACE UNIT CASE AND 0 VOLT SUPPLY FULLY CONFORMS WITH ALL SAFETY REGULATIONS IN FORCE IN COUNTRY OF USE ENSURE THAT THE 0 VOLT SUPPLY AND ALL 0 VOLT SIGNAL REFERENCE TERMINALS ARE FULLY ISOLATED FROM THE CASE OF THE MI12 MACHINE INTERFACE UNIT TAKE CARE TO AVOID GROUND COUPLED INTERFERENCE Note Wiring instructions for connecting the three wires to the terminal block 9 of the MI12 Machine Interface Unit are shown diagrammatically on the underside of the top cover 2 For installation purposes these wires are diagrammatically referred to as Power In 5 Connect each wire 10 to the terminal block 9 in accordance with the wiring diagram provided on the underside of top cover 2 see also Figure 2 13 If you are using the recommended colour of wire connect the wires to the terminal block as follows Colour Wire Terminal Block Number Terminal 16 Terminal 17 Terminal 18 6 Slide the grommet 6 and fibre washer 7 along each wire until the grommet abuts gland connector 5 T Assemble the gland nut 4 to the gland connector 5 tighten the gland nut gently until the grommet 6 seals against the three wires 8 Assemble the top cover 2 to the MI12 Machine Interface Unit and secure with the four screws 1 RENISHAW System Installation 2 35 WARNINGS ISOLATE ALL POWER SUPPLIES TO THE MACHINE TOOL PRIOR TO CONNECTING THE 12 MACHINE INTERFACE UNIT TO THE MACHI
25. Prati 5 10044 Pianezza Torino Italy Tel 39 11 9 66 10 52 Fax 39 11 9 66 40 83 RENISHAWE Before You Begin 13 Table 1 Renishaw Subsidiary Companies Around the World Continued Country Contact the following Renishaw Company Luxembourg Netherlands Peoples Republic of China Republic of Singapore Switzerland United States and Canada Renishaw Kabushiki Kaisha 6F amp 7F Anzai Building 1 12 Hatagaya 1 chome Shibuya ku Tokyo 151 Japan Tel 81 3 5350 2201 Fax 81 3 5350 2207 See France See France Renishaw s Representative Office Room 510 China Travel ServiceTower No 2 Bei San Huan East Road Beijing 100028 The Peoples Republic of China Tel 86 10 6462 2689 Fax 86 10 6461 2687 Renishaw s Representative Office 171 Chin Swee Road 10 09 San Centre Singapore 169877 Republic of Singapore Tel 65 438 2779 Fax 65 438 2780 Renishaw Iberica S A Edificio Oceano Calle Garrotxa 10 12 Parque Mas Blau 08820 Prat de LLobregat Barcelona Spain Tel 34 3 478 21 31 Fax 34 3 476 16 08 Renishaw A G Poststrasse 5 CH8808 Pf ffikon Switzerland Tel 41 55 410 66 66 Fax 41 55 410 66 69 Renishaw Inc 623 Cooper Court Schaumburg Illinois 60173 USA Tel 1 847 843 3666 Fax 1 847 843 1744 5 14 Before You Begin Welcome To Renishaw s MP700 Probe System Welcome to the Renishaw MP700 Probe System a high accuracy probing system specifica
26. RECEIVED BY THE OPTICAL MACHINE MODULE OF THE OTHER Notes The OMM may be positioned at a distance of between 10mm and 3 metres 0 39 in and 9 84 ft from the MP700 Probe At maximum spindle movement the OMP and OMM beams must overlap RENISHAWE System Installation 2 3 Operational Requirements The Optical Machine Module OMM supplied with 25 metres 82 ft of 5 1mm 0 02 in diameter cable must be mounted within the cabinet of your machine tool Ensure that the operating envelope between the OMM and the MP700 s Optical Module Probe OMP conforms to that shown in Figure 2 1 Vertical re 4 m B E WARY XJ Optical U 7 y H centre bw orizon d line Align OMM with mark OMP OMM Optical Module Probe Optical Machine Module At maximum spindle movement OMP OMM beams must overlap Figure 2 1 OMM Operating Requirements RENISHAWj 2 4 System Installation Mounting the OMM The OMM may be mounted within the machine tool cabinet in one of two ways see Figure 2 2 e By screwing the body of the OMM directly to the cabinet wall e By first mounting the OMM to the mounting bracket supplied part no A 2033 0830 and then mounting the bracket to the cabinet wall This is the recommended method as it allows the OMM to be pivoted to provide the best possible angle dimensions mm in Figure 2 2 Mounting the OMM RENISHAW System Installat
27. SSR outputs these comprise two complimentary probe outputs an error output and a low battery output Each SSR output is overload protected by a 62mA fuse NISHAW HINE INTERFACE a ae a 1 A NEU NIA N OW PRCBE STAR ATT STAJUS ARROR 1 Error Indicator LED 4 Power On Indicator LED 2 Low Battery Indicator LED 5 Manual Start Button Switch SW1 3 Probe Status Indicator LED Figure 3 8 MI12 Machine Interface Unit Front Panel RENISHAWE System Description 3 15 The PSU3 Power Supply Unit Note Further information on the PSU3 Power Supply Unit can be obtained from reading the PSU3 Power Supply Unit Installation and User s Guide H 2000 5057 The PSU3 Power Supply Unit supplies power to the probe system and comprises the following primary components refer to Figure 3 9 e Box and cover 1 A POWER LED 2 which illuminates when the power supply is on e Main s plug and socket 3 e ON OFF switch 4 e Output terminal block 5 lt 1 RENI Ww SHA POWER SUPPLY UNIT PSU3 POWER 1 Box and Cover 4 On Off Switch 2 Power On Indicator LED 5 Output Terminal Block 3 Mains Plug and Socket Figure 3 9 The PSU3 Power Supply Unit 5 3 16 System Description The Optica
28. TO BE EXTENDED TO PROVIDE AN OVERALL LENGTH EXCEEDING 18 METRES 59 ft IT IS IMPORTANT THAT THE OMI CABLE IS CUT BACK TO ALENGTH OF 5 METRES 16 4 ft PRIOR TO THE EXTENSION CABLE BEING FITTED an additional 20 metres 65 62 ft maximum to achieve a total length of 25 metres 82 ft by fitting Renishaw extension cable Part Number 2115 0046 RENISHAWE System Installation 2 43 To extend cable to 18m 59ft The extension cable should contain larger core diameters The recommended specification for the extension cable is 12 cores each 7 x 0 2mm Extension Cable Screened Standard Cable Screened Maximum 10m 32 8ft long 8m 26 2ft long 12 cores each 7 x 0 2mm 8m 26 2ft 10m 32 8ft 18m 590 MAXIMUM CABLE LENGTH WHEN EXTENDING FROM 8m 26 2ft STANDARD CABLE 18m 59ft TOTAL Extending the OMI cable to a length of 18 metres 59 feet To extend cable to 25m 82ft The extension cable should contain larger core diameters The recommended specification for the extension cable is 12 cores each 7 x 0 2mm If the total cable length exceeds 18m 59ft standard cable extension the standard cable from the O M I must be cut back to 5m 16 4ft before the extension is connected Extension Cable Screened Standard Cable Screened Maximum 20m 65 6ft long 5m 16 4ft long 12 cores each 7 x 0 2mm 5m 16 4ft 20m 65 6ft
29. TWIST THE PROBE HEAD OTHERWISE DAMAGE CAN RESULT 3 Align dowel see item 2 Figure 5 8 located within the face of the optical module probe with the clearance hole within the probe head Gently push the optical module probe and probe head together 4 Secure the probe head to the optical module probe with the three retaining screws item 3 Figure 5 6 and three star washers 4 Torque tighten the three retaining screws to 1 1Nm 0 8 Ibf ft 5 Hand tighten the two grubscrews 5 sufficient force should be applied to ensure that they will not back off when subjected to machine vibration 6 Reassemble the probe head cover 1 the cover is fully home when it abuts the stop RENISHAWE Maintenance And Adjustment 5 19 Maintenance and Adjustment of the Optical Machine Module OMM Range Selection The OMM reception Rx and transmission Tx ranges see Figure 5 11 are set by the range selection switch shown in Figure 5 10 To gain access to the range selection switch it is necessary to remove the window and label from the OMM body Removal of the Window and Label from the OMM CAUTION DO NOT ALLOW LIQUIDS OR SOLID PARTICLES TO ENTER THE OMM BODY NEVER REMOVE THE WINDOW 3 BY TWISTING OR ROTATING BY HAND ALWAYS USE THE JACKING SCREWS 2 Note The window 3 must only be removed for the following reasons To gain access to the range selection switch when changing the reception transmission range sett
30. by using the pre set Machine Start method When this method is used the following will occur Refer to Figure 4 2 however substitute MI12 Interface for OMI A machine controlled code will be transmitted by way of the OMI to the OMP The ERROR LED on the front panel of the OMI will extinguish typically 0 3 seconds to indicate that the system is operationally sound The SIGNAL LED on the front panel of the OMI will change through red to yellow to green The OMP on receipt of the infra red signal transmitted by the OMM will switch from standby to operational mode typically 0 6 seconds RENISHAWE 4 6 System Operation System Operation OMM Variant Note If the probe is switched on when mounted in a machine tool with an exceptionally severe vibration characteristic the probe will instigate an internal monitoring routine to check the level of vibration If the vibration decays to an acceptable level within 1 second the probe will switch on at the point of decay If the level of vibration does not decay within 1 second the probe will switch on automatically Once operational the OMP transmits its status back to the CNC controller by way of its six transmitting diodes the OMM and the MI12 Machine Interface Unit Probe status is indicated both by The probe status LED within the body of the OMP The PROBE STATUS LED housed within the front panel of the 1
31. down on the printed circuit board Note Wiring instructions for connecting the three wires to the terminal block 9 of the MI12 Machine Interface Unit are shown diagrammatically on the underside of the top cover 2 For installation purposes these wires are diagrammatically referred to as Power In see Figure 2 13 5 Connect each wire 10 to the terminal block 9 in accordance with the wiring diagram provided on the underside of top cover 2 see also Figure 2 13 If you are using the recommended colour of wire connect the wires to the terminal block as follows Colour Wire Terminal Block Number Terminal 16 Terminal 17 Terminal 18 6 Slide the grommet 6 and fibre washer 7 along each wire until the grommet abuts gland connector 5 T Assemble the gland nut 4 to the gland connector 5 tighten the gland nut gently until the grommet 6 seals against the three wires 8 Release the connector screws in the output terminal block 13 of the PSU3 Power Supply Unit 14 9 Connect the red wire to the 24V terminal of the PSU3 Power Supply Unit 14 10 Connect the black wire to the OV terminal of the PSU3 Power Supply Unit 14 11 Connect the green wire to the earth E terminal PSU3 Power Supply Unit 14 12 Tighten connector screws to secure wires to the terminal block 13 RENISHAW 2 26 System Installation Connecting Your System Components to Your Machine Tool OMM MI12 Interface Va
32. halves of the plug together separate the two halves of the plug Note To ensure the best possible protection from the environment it is recommended that the mains cable used to connect the PSU3 Power Supply Unit to the mains power supply is fitted with the appropriate plug moulded to one end 3 Obtain a suitable length of standard mains cable 4 Where necessary fit a European schuko American mains or BS 1363 A standard plug to the cable as applicable 5 Release the cable clip screws within the plug and insert the free end of cable through the cable clip 6 Connect the mains cable to mains plug and secure cable in position using the cable clip RENISHAWE System Installation 2 37 amp THIS EQUIPMENT MUST BE EARTHE NO USER SERVICEABLE PARTS INGIDE ay RENISHAW pit POWER SUPPLY UNIT PSUS 1 PSU3 Power Supply Housing 2 Mains Plug and Socket 3 ON OFF Switch 4 Output Terminal Block 5 POWER LED Figure 2 19 Connecting the PSU3 Power Supply Unit to the Mains Power Supply 5 2 38 System Installation 7 Assemble both halves of the mains plug together and secure with screw 8 Reassemble the mains plug and socket 2 together 9 Connect the mains cable to mains power supply RENISHAWE System Installation 2 39 Installing Your MP700 Probe System to Your Machine Tool Optical Machine Interface Variant Note
33. in Time Out mode causing timer to reset in the tool carousel Probe is being switched on by the OMM OMI Probe being continuously switched on by an adjacent probe within the tool carousel No line of sight between probe and OMM OMI when switch off signal is sent Rectification Action Wait for a minimum of 2 minutes and 20 seconds for the probe to switch off Use lighter stylus Review use of Optical On Time Out mode Reduce proximity and or the signal strength of the OMM OMI Refer to Chapter 5 Maintenance and Adjustment Ensure that a distance of 600mm is maintained between each probe Ensure line of sight is maintained PROBE STATUS LED FAILS TO ILLUMINATE Possible Cause Battery installed incorrectly Rectification Action Check battery for correct installation MI12 POWER LED FAILS TO ILLUMINATE WITH POWER SWITCHED ON Possible Cause Faulty electrical contact Blown fuse Incorrect power supply Rectification Action Check all connections Check all fuses Replace blown fuse Ensure power supply is 24V dc 5 6 8 Troubleshooting MI12 LOW BATT LED REMAINS ILLUMINATED Possible Cause Incorrectly installed battery Fully discharged battery Rectification Action Check battery for correct installation Renew battery PROBE STATUS LED REMAINS ILLUMINATED Possible Cause Battery voltage below useable level Rectificat
34. is switched off and only the receiver is operational e Operating mode where the probe and OMP are switched on before a gauging cycle The OMP switch is used to adjust the following settings e The Debounce time which controls the minimum time that must elapse after a start signal is sent before the OMP is ready to act upon another start signal If a start signal is sent within this debounce period the OMP will ignore it This debounce period which is user selectable can be set to either 5 or 9 seconds Typically the debounce time will be factory set at 5 seconds Refer to Chapter 5 Maintenance and Adjustment for switch adjustment e The Operating Mode in which the probe is to operate This can be set to either Optical On Optical Off or Optical On Time Out Typically the operating mode will be factory set to Optical On Optical Off Refer to Chapter 5 Maintenance and Adjustment for switch adjustment e The Time Out period which controls the time that the OMP will remain operational before switching to the standby mode when in the Optical on Time Out mode The time out period which is user selectable can be set to either 33 2 seconds or 134 2 seconds Typically the time out period will be factory set to 134 2 seconds Refer to Chapter 5 Maintenance and Adjustment for switch adjustment The battery 13 is sealed from the environment by the battery cover seal 12 and battery cover 11 RENISHA
35. not transmitting the start signal MI12 Machine Interface Unit is not receiving the machine M code No power supply to OMI No power supply to MI12 Machine Interface Unit Rectification Action Ensure SIGNAL LED is green If LED is red or yellow adjust the signal strength of the OMI in accordance with the Chapter 5 Maintenance and Adjustment Verify that START LED illuminates when a start signal is sent Check the power supply to the MI12 Check condition of all connections and outputs Verify that OMI has a power supply Verify that MI12 has a power supply Check all connections and fuses Verify power supply is a stable 24V PROBE STOPS IN MID CYCLE PROBE OPEN FAIL Possible Cause Beam obstructed Probe has been orientated too quickly Rectification Action Check for LED error Remove obstruction Ensure axial movement of probe is maintained within the recommended rate RENISHAWE 6 4 Troubleshooting PROBE STOPS IN MID CYCLE PROBE OPEN FAIL Continued Possible Cause Probe has false triggered due to shock and vibration during an axial move Probe remained on workpiece surface too long Probe remaining on workpiece and not backing off Probe failing to trigger on contact with workpiece Probe has collided with foreign object Damaged cables Power supply de activated Loose probe assembly Probe unable to find part within program window
36. of the system Typically adjustment should only prove necessary in extreme cases Adjust the range selection switch Figure 2 7 to the setting shown below to increase or decrease the Reception Rx and Transmission Tx ranges to the percentage you require refer to Figure 2 8 Reception Range Transmission Range p EN 2 Figure 2 7 The OMM Range Selection Switch RENISHAWE System Installation 2 13 Rx 100 Tx 100 Figure 2 8 OMM Reception and Transmission Ranges RENISHAWE 2 14 System Installation Replacement of the OMM Label and Window Refer to Figure 2 9 1 Refer to View A and assemble the label 1 and secure with the two quick release screws 2 Rotate screws a quarter turn clockwise to hold label in place Visually examine the OMM body 3 for damage or scratching to the O ring location groove as shown in View A Visually examine the window 4 and O ring 5 for cleanliness as shown in View B Also ensure that both the window and O ring are undamaged Refer to View C and insert the two short screws 6 into the two threaded holes A in the window 4 Tighten the two screws to 0 3 0 7Nm 0 22 0 51 Ibf ft Lightly smear the O ring 5 with silicone grease and assemble window 4 to OMM body 3 Insert the two long screws 7 into the two plain holes B Tighten each
37. or orientated about another axis at a rate above that quoted for the length and type of stylus used in Probe Orientation earlier in this chapter then the probe will show a measurement offset or a continuously OPEN condition To recover from this condition probe continuously OPEN another M code start signal must be sent to reset the probe Figure 4 5 below shows the time constraints and the effect of the second M code start signal M Code High Start Signal Low Interface Open Error Signal Closed Interface Oper Probe Status Closed Orientation Probe Oms 322ms 418ms 1271ms Open occurs here 364ms The probe will not respond bs to code start signal until The MI12 Machine Interface Unit OMI will indicate 2 1 seconds have elapsed an Open probe for up to 948ms after the ERROR following the initialM code signal has cleared start signal Figure 4 5 Probe Reset Optical On Time Out Selected 5 4 14 System Operation Resetting the Probe in Optical On Optical Off Mode Notes The MP700 probe will only switch off if the debounce period of 4 2 or 8 4 seconds has elapsed An M code start signal sent during the debounce period will reset the probe as if it were set in Optical On Time Out mode The duration of the M code start signal must be less than 190mS to ensure the interface sends only one start signal The minimum time required for the system to recover i
38. screw a few turns at a time to gradually pull the window 4 evenly against the OMM 3 There may be some resistance due to the compression of air trapped inside the OMM Alternatively tighten screws 7 to pull window 4 evenly into the body of the OMM Finally tighten screws to 1 0 1 8Nm 0 74 1 32 Ibf ft RENISHAW System Installation 2 15 Inspect O ring location groove for damage Ensure that the window O ring are clean and undamaged View B 6 4 J 7 View C 1 Label 5 O Ring 2 Retaining Screw 2 Off 6 Screw short 2 Off 3 OMM Body 7 Screw long 2 Off 4 Window Figure 2 9 Assembly of the OMM Window and Label 5 2 16 System Installation Mounting Your MI12 Machine Interface Unit to Your Machine Tool Note In order that personnel operating the MP700 Probe System can monitor system status it is recommended that the MI12 Machine Interface be mounted to the machine tool such that its front panel is visible to the Operator The MI12 Machine Interface may be mounted to the machine tool as follows Mounted within the front panel of the CNC controller e Mounted within one of the machine s side panels e Mounted on top of the CNC controller if panel mounting is not possible RENISHAW System Installation 2 17 Cutting a Hole in the Mounting Panel Note Before cu
39. signal This can be set to 5 or 9 seconds This setting is factory set to 5 seconds The TIME OUT period which controls the period of time that the optical module probe will remain operational before switching to the standby mode when in the Optical on Time out mode This can be set to 33 2 seconds or 134 2 seconds This setting is factory set to 134 2 seconds The MODE in which the probe operates This can either be Optical On Optical Off or Optical On Time Out This setting is factory set to Optical On Optical Off To select the DEBOUNCE TIME OUT and or MODE setting s you require move switches 1 2 and or 3 to the position s shown in Figure 5 8 RENISHAWE Maintenance And Adjustment 5 17 1 DEBOUNCE 2 TIME OUT 3 MODE 5 secs 33 secs Optical On Factory Set Optical Off Factory Set 1 DEBOUNCE 2 TIME OUT 3 MODE 9 secs 134 secs Optical On Auto Time Off 1 Optical Module Probe 2 Dowel 3 Optical Module Probe Switch Figure 5 8 Optical Module Probe Switch Settings RENISHAWE 5 18 Maintenance And Adjustment Replacing the Probe Head Refer to Figure 5 6 1 Fully release the two grubscrews 5 to facilitate assembly of the optical module probe to the probe head 2 2 Visually inspect the probe rear seal 7 and O ring 9 for damage and deformation If damage is found return the probe to your supplier for repair CAUTION DO NOT
40. signal is present open for a minimum of 500 milliseconds If required the probe may be switched on 300 milliseconds after being switched off refer to Switching On the Probe earlier in this chapter RENISHAWE 4 18 System Operation Does and Don ts Mounting the Probe Ensure that the probe is securely mounted to the shank e Ensure that the probe status LED is aligned such that it is visible to the Operator Ensure that the diaphragm protection cover has been removed Ensure sure that on centre adjustment has been performed Switching On the Probe Make sure the probe is stationary for a period of one second after the M code start signal is sent Never select the Auto Start setting of the MI12 Machine Interface Unit or Optical Interface Unit Switching the Probe Off Use of the Optical On Optical Off mode will greatly extend the life of your probe battery Use of the Optical On Time Out option is recommended when you wish to regularly re orientate the probe i e 5 axis and subsequent resetting may be required e Ensure the probe does not remain active in the tool changer when the Optical On Time Out option has been selected RENISHAW System Operation 4 19 Use of Styli It is recommended that carbon fibre styli are used whenever you wish to use styli in excess of 100mm this is particularly important on 5 axis machine tools 5 Axis Machine Applications The probe will require reset
41. the reception Rx and transmission Tx ranges set to 10096 This switch may be used to adjust the optical range setting for signal transmission and reception refer to Adjustment of the Range Selector Switch SW1 later in this chapter In order that a MACHINE START signal can be initiated an input of between 4 25V at 1mA and 30V at 10mA is required between the START wires WHITE ve and BROWN ve This is TTL compatible when connected between 5V and TTL output This is an isolated input The Minimum pulse width is 1ms Switch SW2 This switch enables Normally High and Normally Low options to be selected for PROBE STATUS SKIP LOW BAT and ERROR to produce the output waveforms shown in Figure 2 37 The switch is factory set to the settings shown in Figure 2 36 RENISHAW System Installation 2 65 1 Screw short 2 Off 4 OMI Body 2 Screw long 2 Off 5 Retaining Screw 3 Window 6 Label Figure 2 35 Removal of the OMI Window and Label O M I SWITCH SW2 Output Configuration Factory setting shown O M I SWITCH SW1 Output Configuration Factory setting shown Probe Status Normally High Low Battery Normally Low Error Normally High Skip Normally Low Machine Start Rx Reception 100 Tx Transmission 100 swe Tx AUTO 100 START PROBE SKIP LOW BAT ERROR STATUS Rx Tx MACHINE PROBE SKIP LOW BAT ERROR 100 50 START STATU
42. to valid signal transmission 410ms Figure 2 37 Optical Machine Interface Unit Output Waveforms RENISHAW 2 68 System Installation Adjustment of the Range Selection Switch SW1 WARNING IF TWO SYSTEMS ARE OPERATING IN CLOSE PROXIMITY TO EACH OTHER TAKE CARE TO ENSURE THAT SIGNALS TRANSMITTED BY ONE SYSTEM ARE NOT RECEIVED BY THE OTHER AND VICE VERSA CAUTION NATURAL REFLECTIVE SURFACES WITHIN THE MACHINE MAY INCREASE THE SIGNAL TRANSMISSION RANGE ALSO COOLANT RESIDUE IF ALLOWED TO ACCUMULATE ON THE WINDOW OF THE OMI WILL HAVE A DETRIMENTAL EFFECT ON THE OMI s PERFORMANCE IT IS THEREFORE IMPORTANT TO KEEP THE WINDOW CLEAN AT ALL TIMES AMBIENT TEMPERATURES BELOW 5C 41F OR ABOVE 60C 140F WILL REDUCE THE RANGE OF THE OMI Notes The OMI Rx and Tx ranges should only be adjusted by suitably qualified personnel and only when the OMI is known to be affected by optical or electro magnetic interference Adjustment should only prove necessary in extreme cases For optimum positioning of the OMI during installation an indication of the level of signal strength received by the OMI is provided by the SIGNAL LED The effective range of the OMI can be adjusted by use of the range selector switch SW1 If problems are experienced with either electrical or optical noise and the unit is installed at less than half the specified maximum range of the probe then the range selection switch can be adjusted to red
43. 031 0002 A 2031 0043 A 2033 0830 A 2115 0001 A 2115 0034 A 2075 0142 A 2075 0141 A 2033 0690 P FS20 0062 P FS20 1A25 P FS01 1A50 A 2019 0018 RENISHAW Part Description Carbon Stylus 150mm long M4 Carbon Fibre Stylus 150mm long with 6mm diameter ball Carbon Stylus 200mm long M4 Carbon Fibre Stylus 200mm long with 6mm diameter ball Styli are fully listed on Renishaw Data Sheets MTS H 2000 2000 and MSD H 2000 2005 Battery 9V Alkaline Battery Optical Machine Module complete with 5 1mm diameter x 25m long 0 2 in diameter x 82 ft long cable Optical Machine Module Window Replacement Kit Optical Machine Module PCB Replacement Kit Optical Machine Module Optical Machine Interface Mounting Bracket complete with fixing screws washers and nuts Optical Machine Interface complete with 4 35mm diameter x 5m long 0 17 in diameter x 16 4 ft long cable Optical Machine Interface Fuse Pack MI12 Machine Interface Unit MI12 Machine Interface Unit Board only 12 Machine Interface Unit Panel Mounting Kit Fuse 62mA Fuse 250mA Fuse 500mA For MI12 Machine Interface Unit FS1 Spare FS2 Error FS3 Low Battery FS4 Probe Status N C and FS6 Probe Status N O For MI12 Machine Interface Unit FS5 Audio Extension Protection For MI12 Machine Interface Unit FS7 Anti surge Power Supply Protection PSU3 Power Supply Unit
44. 0um Fully tighten cone point grubscrews 12 to 6 8Nm 4 4 5 9lbf ft Continue adjustment using the four flat point grubscrews 12 This is achieved by using each in opposition to the other in order to move the probe first slackening one then tightening the other Using two 2 5mm Allen keys if required progressively tighten the four grubscrews as the final setting is approached When the final setting is achieved bum 0 0002 in total stylus run out or better ensure that the four flat point grubscrews 2 are fully tightened to 1 5 3 5Nm 1 1 2 6lbf ft Ensure cover seal 13 is correctly seated and lightly lubricate with mineral oil or grease Reassemble cover 6 and secure with retaining screw 5 Torque tighten the retaining screw to 1 1 0 8 Ibf ft RENISHAW Maintenance And Adjustment 5 11 12 Reinstall battery 4 ensuring correct polarity 13 Ensure battery cover seal 3 is correctly seated and lightly lubricate with mineral oil or grease 14 Assemble battery cover 2 and secure with the two capscrews 1 torque tighten the capscrews to 1 1Nm 0 8 Ibf ft 4mm AF 2 bmm AF 1 Capscrew 2 Off 8 Adjustment Plate 2 Battery Cover 9 Capscrew 4 Off 3 Battery Cover Seal 10 Flat Point Grubscrew 4 Off 4 Battery 11 Shank 5 Retaining Screw 12 Cone Point Grubscrew 2 Off 6 Cover 13 Cover Seal 7 Centre Ball Figure 5 5 Stylus On centre Adjustment Centre Ball Meth
45. 1 Connecting the MI12 Machine Interface to Your Machine s CNC Controller To connect the MI12 Machine Interface Unit to your machine s CNC controller carry out the following see Figures 2 13 and 2 14 Notes The way in which the MI12 Machine Interface Unit requires to be connected to your machine s CNC controller will determine the number of cores you will require However it is recommended that a single twelve core cable conforming to DEF STAN 61 12 Part 4 or equivalent is used to connect the MI12 Machine Interface Unit to the machine s CNC controller For specific information on how to connect the MI12 Machine Interface Unit to your machine s CNC controller refer to the Probe Systems Installation Manual For Machine Tools Publication Number H 2000 6040 Where necessary this may be obtained through your nearest Renishaw company For specific information on your machine s CNC controller contact the manufacturer or supplier of the machine tool to which you are installing the MP700 Probe System 1 Obtain suitable length s of screened multicore cable offering twelve PVC insulated PVC sheathed cores Each core must contain seven 0 2mm diameter wires 2 Release and remove the gland nut Item 4 Figure 2 14 from the unused gland connector 5 immediately next to that used for the PSU3 Power Supply Unit cable Remove the grommet 6 and fibre washer 7 from the gland nut 3 Assemble the gland nut 4 fibre wa
46. 2 Machine Interface Unit illuminating to indicate that the probe is seated If the probe remains unseated the probe status LED within the body of the OMP will begin to flash red Low battery power is indicated by the illumination of the LOW BATT LED housed within the front panel of the MI12 Machine Interface Unit This indicates a battery life of less than 60 minutes A completely dead battery is indicated when the probe status LED within the body of the OMP remains constantly red If the probe status indications are satisfactory an inspection program can be initiated to drive the probe as required refer to your software or machine tool documentation RENISHAW System Operation 4 7 System Operation OMI Variant Note If the probe is switched on when mounted in a machine tool with an exceptionally severe vibration characteristic the probe will instigate an internal monitoring routine to check the level of vibration If the vibration decays to an acceptable level within 1 second the probe will switch on at the point of decay If the level of vibration does not decay within 1 second the probe will switch on automatically Once operational the OMP transmits its status back to the CNC controller by way of its six transmitting diodes and the OMI The SIGNAL LED within the front panel of the OMI will then indicate the strength of signal received from the OMP in the following way e By turning red to ind
47. A in the window 4 Tighten the two screws to 0 3 0 7Nm 0 22 0 51 Ibf ft Lightly smear the O ring 5 with silicone grease and assemble window 4 to OMM body 3 Insert the two long screws 7 into the two plain holes B Tighten each screw a few turns at a time to gradually pull the window 4 evenly against the OMI body 3 There may be some resistance due to the compression of air trapped inside the Alternatively tighten screws 7 to pull window 4 evenly into the body of the OMI Finally tighten screws to 1 0 1 8Nm 0 74 1 32 Ibf ft RENISHAW System Installation 2 71 Inspect O ring location groove for damage uh Nu SN Ensure that the window and O ring are clean and undamaged View A 5 View 3 4 6 i View C 1 Label 5 O Ring 2 Retaining Screw 2 Off 6 Screw short 2 Off 3 OMI Body 7 Screw long 2 Off 4 Window Figure 2 39 Assembly of the OMI Window and Label RENISHAWE 2 72 System Installation Installing Your MP700 Probe to Your Machine Tool All Systems The Diaphragm Protection Cover The MP700 Probe is supplied with a diaphragm protection cover Figure 2 40 that protects the diaphragms during transportation within low pressure environments such as aircraft cargo holds It ensures that following this type of transportation the diaphragms return to their correct form Although it is obviously import
48. Cut rigid conduit 6 to required length 2 Release and remove gland nut 5 from screwed adapter 2 Take care not to slacken gland nut 1 3 Remove gland nut 5 together with conduit termination piece and plastic olive from the OMM cable 3 see Figure 2 4 5 Remove brass olive 4 from its plastic bag and assemble over OMM cable 3 6 Re assemble gland nut 5 to OMM cable 3 T Pass the OMM cable 3 through the rigid conduit 6 8 Locate end of rigid conduit 6 into screwed adapter 2 Note When tightening gland nut 5 it is important to ensure that gland nut 1 is not inadvertently loosened 9 Assemble gland nut 5 to screwed adapter 2 and torque tighten to between 25 and 27Nm 18 55 and 19 91 Ibf ft This action will provide a seal between the rigid conduit and the conduit adapter conforming to BS 5490 IEC 529 IP67 RENISHAWE System Installation 2 9 1 Gland Nut 4 Brass Olive 2 Screwed Adapter 5 Gland Nut 3 OMM Cable 6 Rigid Conduit Figure 2 5 Fitting Rigid Conduit to the OMM Cable 5 2 10 System Installation Setting Up Your Optical Machine Module The OMM reception Rx and transmission Tx ranges see Figure 2 8 are set by the range selection switch shown in Figure 2 7 To gain access to the range selection switch it is first necessary to remove the window and label from the OMM body Removal of the Window and Label from the OMM CAUT
49. Error Sources Systematic Error Sources RENISHAW 2 Before You Begin RENISHAWE Before You Begin 3 4 Before You Begin RENISHAWE Before You Begin 5 RENISHAWE 6 Before You Begin Table of Figures FIGU FIGU FIGU FIGU FIGU FIGU FIGURE 2 14 CONNECTING THE OPTICAL MACHINE MODULE PSU3 POWER SUPPLY UNIT AND FIGU FIGURE 2 29 CONNECTING THE OPTICAL MACHINE INTERFACE TO A FANUC CONTROLLER WITH FIGURE 2 31 INSTALLING THE OPTICAL MACHINE INTERFACE TO A MACHINE TOOL WITH FIGU RENISHAWE Before You Begin 7 FIGURE 2 39 ASSEMBLY OF THE OMI WINDOW AND LABEL RE 2 40 THE DIAPHRAGM PROTECTION COVER RE 2 40 MOUNTING THE PROBE TO A SHANK RE 2 42 STYLUS ON CENTRE ADJUSTMENT METHODS RE 2 43 STYLUS ON CENTRE ADJUSTMENT ADJUSTMENT PLATE METHOD RE 2 44 STYLUS ON CENTRE ADJUSTMENT CENTRE BALL METHOD RE 3 1 MP700 PROBE SYSTEM OMM MI12 INTERFACE VARIANT RE 3 2 MP700 PROBE SYSTEM OPTICAL MACHINE INTERFACE VARIANT RE 3 3 THE MP700 PROBE RE 3 4 PROBE HEAD DIAGRAMMATIC RE 3 5 OPTICAL MODULE PROBE RE 3 6 THE OPTICAL MACHINE MODULE RE 3 7 OMM RANGE SELECTION SWITCH FIGURE 3 8 MI12 MACHINE INTERFACE UNIT FRONT PANEL RE 3 9 THE PSU3 POWER SUPPLY UNIT RE 3 10 OPTICAL MACHINE INTERFACE RE 3 11 OPTICAL MACHINE INTERFACE SWITCH LOCATIONS RE 3 12 MP700 PROBE DIMENSIONS RE 3 13 OMP OMM CHARAC
50. FORE YOU BEGIN SuppOrt SELVICES ss sscsccsessossecesoessscessesessovsssencessutscseasssusseosade vss E ena bie ssescdsussobbsiesbussdsesvesuaessvasssiess The Renishaw Group World wide The Renishaw Product Support Network Product Support World wide Product Support Within the United Kingdom Republic of Ireland Calling a Renishaw Subsidiary Office Renishaw Subsidiary Companies Welcome To Renishaw s MP700 Probe System cccccccccscscscscscscececscececesececececscecececececececceeeceeececececeseeses MP700 A System Overview The MP700 Probe System Optical Machine Interface Variant The MP700 Probe The PSU3 Power Supply Unit ptical Machine Interface OMI The MP700 Probe System Optical Machine Module Variant The MP700 Machine Spindle Probe The Optical Machine Module OMM The Machine Interface Unit MI12 The Power Supply Unit PSU3 Datuming Equipment Optional CHAPTER 1 FUNDAMENTALS Probe Datuming General Probe Datu ming MP700 Probe tte et eei tee et e qe ipei Pete e baee 1 5 Workpiece Inspection eee ee esee eee eee ena nenas enata ae tasa sena nass sense tuse tns tns nose tese sensns Selecting The Correct Stylus Probing Techniques MP700 Probe How A Probe Works The Kinematic Location Strain Gauge Technology Touch Trigger Probes Touch Trigger Probes Performance Characteristics Probe Pre Travel Potential Error Sources Fixed
51. For specific information on how to connect the MP700 Probe System OMI variant to your machine tool s CNC controller refer to the Probe Systems Installation Manual For Machine Tools Publication Number H 2000 6040 and the OMI PSU3 Power Supply Unit Installation and User s Guide Publication Number H 2000 5062 Where necessary these publications may be obtained through your nearest Renishaw company Mounting Your PSU3 Power Supply Unit to Your Machine Tool It is recommended that the PSU3 Power Supply Unit see Figure 2 19 is mounted within the machine tool s electrical cabinet RENISHAWE 2 40 System Installation Mounting Your Optical Machine Interface to Your Machine Tool WARNINGS IF THE SYSTEM IS TO BE INSTALLED ONTO A MULTI AXIS MACHINE TOOL ENSURE THAT THE OPTICAL MODULE PROBE S LED s HAVE LINE OF SIGHT WITH THE OPTICAL MACHINE INTERFACE IF TWO OPTICAL TRANSMISSION SYSTEMS ARE TO OPERATE IN CLOSE PROXIMITY TO ONE ANOTHER ENSURE THAT SIGNALS TRANSMITTED BY THE OPTICAL PROBE MODULE OF ONE SYSTEM WILL NOT BE RECEIVED BY THE OPTICAL MACHINE INTERFACE OF THE OTHER Note The OMI may be positioned at a distance of between 10mm and 3 metres 0 39 in and 9 84 ft from the MP700 Probe Operational Requirements The Optical Machine Interface OMI supplied with 8 metres 26 2 ft of cable must be mounted within the cabinet of your machine tool such that the operating envelope between the OMI and t
52. ION DO NOT ALLOW LIQUIDS OR SOLID PARTICLES TO ENTER THE OMM BODY NEVER REMOVE THE WINDOW 3 BY TWISTING OR ROTATING BY HAND ALWAYS USE THE JACKING SCREWS 2 Note The window 3 must only be removed for the following reasons To gain access to the range selection switch when changing the reception transmission range settings To replace a broken window Refer to Figure 2 6 1 Using a 2 5mm AF hexagon Allen Key remove the two short screws 1 and the two long screws 2 securing the window 3 to the OMM body 4 2 Insert the two long screws 2 into the two threaded holes A 3 Alternately tighten the long screws 2 to evenly jack the window 3 from the OMM body 4 Gently remove the window from the OMM body 4 Release the label 6 from the OMM body by turning the two quick release screws 5 a 1 4 turn counterclockwise Carefully lift the label from the OMM body to gain access the range selection switch see Figure 2 7 RENISHAWE System Installation 2 11 1 Screw short 2 Off 4 OMM Body 2 Screw long 2 Off 5 Retaining Screw 3 Window 6 Label Figure 2 6 Removal of the OMM Window and Label 5 2 12 System Installation Adjustment of the Range Selection Switch Note The OMM Rx and Tx ranges should only be adjusted by suitably qualified personnel and only when the OMM is found to be affected by optical or electro magnetic interference during commissioning
53. Ibf ft 1 1 Nm 0 8 Ibf ft Figure 3 15 Screw Torque Values RENISHAWE 3 28 System Description THIS PAGE LEFT INTENTIONALLY BLANK RENISHAWE System Operation 4 1 CHAPTER 4 System Operation This chapter provides step by step instructions on how to switch on reset and switch off your MP700 Probe As well as providing a comprehensive Does and Don ts section it also includes general information on e System operation e Probe orientation e Probe trigger and reseat cycles Contained In This Chapter Operating of the MP700 Probe a Probe Trigger and Reseat SySIlOm ded eret tret ree 4 2 Cycles Typical 4 8 Switching on the Probe Probe Orientation 4 10 OMM Variant 4 2 Resetting the Probe 4 12 a Switching on the Probe OMI Variant 4 5 Switching Off the Probe 4 16 System Operation H Does and Don ts 4 18 OMM Variant 4 6 B System Operation OMI Variant 4 7 5 4 2 System Operation Operating the MP700 Probe System CAUTION PRIOR TO PROBE SYSTEM OPERATION IT IS VITALLY IMPORTANT THAT YOU FULL
54. LOCATIONS RE 5 22 SWITCH SW3 SETTINGS FIGURE 5 23 MI12 MACHINE INTERFACE UNIT FUSE LOCATION RENISHAW 8 Before You Begin List of Associated Publications Publication Title Publication Number Optical Machine Module Installation and User s Guide H 2000 5044 PSU3 Power Supply Unit Installation and User s Guide H 2000 5057 Optical Machine Interface PSU3 Power Supply Installation and User s Guide H 2000 5062 MI12 Interface PSU3 Power Supply Installation and User s Guide H 2000 5072 Probe Systems Installation Manual for Machine Tools H 2000 6040 RENISHAW Before You Begin 9 Before You Begin This MP700 Probe System User Guide contains detailed information about how to install use maintain and repair your MP700 Probe System So whether you re an expert or a novice when it comes to probing you ll find that you are fully supported by this comprehensive guide Split into six self contained chapters the guide is structured to provide as much or as little information that you may personally require to use the MP700 Probe System effectively A comprehensive Spares List is also provided to assist in the identification and ordering of replacement parts g 0 Chapter 1 Fundamentals which provides general information on touch trigger probes workpiece setup and workpiece inspection Chapter 2 System Installation which provides general information on how to install the MP700 Probe System to your mach
55. M Operating Envelope Refer to Figure 3 13 Operating range 10mm 0 39in minimum to 3 metres 9 84 feet maximum Operating environment The OMP OMM will operate normally within an ambient temperature range of 10 to 40 Centigrade 50 to 120 Fahrenheit Operation in temperatures of 0 to 5 C or 50 to 60 C 32 to 41 F or 122 to 140 F will result in some reduction in optical range Beam spread 35 or 70 At maximum spindle movement OMP OMM beams must overlap Figure 3 13 OMP OMM Characteristics RENISHAW 3 26 System Description OMP OMI Operating Envelope Refer to Figure 3 14 Operating range 10mm 0 39in minimum to 3 metres 9 84 feet maximum Operating environment The OMP OMI will operate normally within an ambient temperature range of 10 to 40 Centigrade 50 to 120 Fahrenheit Operation in temperatures of 0 to 5 C or 50 to 60 C 32 to 41 F or 122 to 140 F will result in some reduction in optical range Beam spread 35 or 70 At maximum spindle movement OMP OMM beams must overlap Figure 3 14 OMP OMI Characteristics RENISHAW System Description 3 27 Screw Torque Values For screw torque values refer to Figure 3 15 below 3 Nm 2 214 6 8 Nm 4 4 5 9 Ibf ft 25 Nm 1 5 3 5 Nm 18 44 Ibf ft 1 1 2 6 Ibf ft maximum 3 5 1 Nm 3 76 Ibf ft 2Nm 1 7 Ibf ft ZA 2 Nm 1 4 Nm 1 7 Ibf ft 0 8
56. Maintenance And Adjustment 5 29 O M I OUTPUTS PROBE Se ores Seated Triggered E Probe E Probe TOTEM POLE probe E poe LI ig Error Low Switch TRANSISTOR On Trigger Beam cut Clear Battery Off OUTPUTS Op i a Output PROBE ih status 9 Output Normally Low Low Output PROBE High STATUS Output Low Normally po Output skip High Output Normally Low Low Output SKIP High Output Low Normally Output ERROR High Output Low Output ERROR High Output Low Normally High Output High Output Low Output High Output Low Normally High SIGNAL DELAYS 1 Transmission Delay Probe Trigger to output change of state 144 5 5 2 Start Delay Time from initiation of Start Signal to valid signal transmission 410ms Figure 5 16 Optical Machine Interface Unit Output Waveforms RENISHAW 5 30 Maintenance And Adjustment Adjustment of the OMI Range Selection Switch SW1 WARNING IF TWO SYSTEMS ARE OPERATING IN CLOSE PROXIMITY TO EACH OTHER TAKE CARE TO ENSURE THAT SIGNALS TRANSMITTED BY ONE SYSTEM ARE NOT RECEIVED BY THE OTHER AND VICE VERSA CAUTION NATURAL REFLECTIVE SURFACES WITHIN THE MACHINE MAY INCREASE THE SIGNAL TRANSMISSION RANGE ALSO COOLANT RESIDUE IF ALLOWED TO ACCUMULATE ON THE WINDOW OF THE OMI WILL HAVE A DETRIMENTAL EFFECT ON THE OMI s PERFORMANCE IT IS THEREFORE IMPORTANT TO KEEP THE WINDOW CLEAN AT ALL TIMES
57. NE TOOL S 24 VOLT POWER SUPPLY TO ENSURE THE SAFETY OF ALL PERSONNEL IT IS IMPORTANT THAT THE GROUNDING OF THE MI12 MACHINE INTERFACE UNIT CASE AND 0 VOLT SUPPLY FULLY CONFORMS WITH ALL SAFETY REGULATIONS IN FORCE IN COUNTRY OF USE ENSURE THAT THE 0 VOLT SUPPLY AND ALL 0 VOLT SIGNAL REFERENCE TERMINALS ARE FULLY ISOLATED FROM THE CASE OF THE MI12 MACHINE INTERFACE UNIT TAKE CARE TO AVOID GROUND COUPLED INTERFERENCE Note Prior to connecting the MI12 Machine Interface Unit to the machine tool s 24 volt power supply refer to the machine manufacturer s literature to ensure all safety and technical requirements are met in full 9 Connect the red wire to the 24V terminal of the machine tool s 24V power supply 10 Connect the black wire to the OV terminal of the machine tool s 24V power supply 11 Connect the green wire to the earth E terminal of the machine tool s 24V power supply RENISHAW 2 36 System Installation Connecting Your PSU3 Power Supply Unit to the Mains Power Supply Note The PSU3 Power Supply Unit will operate on 90 137V 100 125V nominal 45 65 Hz LO or 180 275V 200 250V nominal 45 65 Hz HI mains power supplies To connect the PSU3 Power Supply Unit to the mains power supply carry out the following refer to Figure 2 19 1 Remove plug from the mains plug and socket 2 at the rear of the PSU3 Power Supply Unit housing 1 2 Release and remove the screw securing the two
58. OBE STATUS The switch is factory set to option 1 see Figure 5 22 RENISHAW 5 96 Maintenance And Adjustment To adjust switch SW2 or SW3 carry out the following refer to Figures 5 20 through 5 22 1 Release and remove the four screws item 1 Figure 5 20 and four washers 2 securing the top cover 3 to the MI12 Machine Interface Unit 4 2 Remove the top cover 3 from the MI12 Machine Interface Unit 4 3 Adjust switch SW2 and or SW3 to the required setting refer to Figures 5 21 and 5 22 4 Replace top cover 3 and secure with four screws 1 and four washers 2 1 Screw 4 off 2 Washer 4 off 3 Top Cover 4 MI12 Machine Interface Unit Figure 5 20 Removing Replacing the Top Cover of the MI12 Interface Unit RENISHAW Maintenance And Adjustment 5 37 AUTO START i MACHINE START Special OMM 2 j UL OMM 2 i Standard OMM C EN OMM1 47 OMM1 rmm em Pi d Em 1 1 7 Terminal Block Figure 5 21 MI12 Machine Interface Unit Switch Locations OPTION Terminals Terminals 14 amp 15 23 amp 24 N O Normally Open N C Normally Closed Switch must be in position shown Switch can be in either position Bleeper on Bleeper off Factory set to Bleeper on
59. S H PROBE STATUS 7 Seated H Seaca PROBE STATUS Seated Triggered L Figure 2 36 Range Selection Switch SW1 and Configuration Switch SW2 5 2 66 System Installation Optical Machine Interface Output Signals and Waveforms The output signals and waveforms of the Optical Machine Interface are shown in Figure 2 37 and can be adjusted by altering the settings of switch SW2 When adjusting switch SW2 it is important to ensure that the output signals from the OMI are compatible with the machine control input Signal Delays Transmission Delay probe trigger to output change of state 144uS Start Delay initiation of start signal to valid signal transmission 410 ms RENISHAWE System Installation 2 67 O M I OUTPUTS PROBE oU ELE Seated Triggered Seated Probe Probe TOTEM POLE eam Ee 1 O ig Low Switch e g TRANSISTOR Beam cut Clear Battery Of i yY t t OUTPUTS of PROBE Hen STATUS Output Normally Low W Output High Output Low Normally Output SKIP High Output Low Output SKIP High Output Low Normally Output ERROR High Output Low Output ERROR High Output Low Normally High Output High Output Low Output High Output Low Normally High SIGNAL DELAYS 1 Transmission Delay Probe Trigger to output change of state 144s 5 2 Start Delay Time from initiation of Start Signal
60. STAT LO BATT ERROR X A IR Ne START 7 SIGNAL Nu Na LOW PROBE ERROR BAT STATUS MADE NUS FS1 250mA 1 4 A Input Power The input power supply is fuse protected by a 250mA fuse F52 125mA 1 8 A Output GroupA Probe Bat Low Each group of outputs is fuse protected on its respective FS3 125mA 1 8 A Output Group A Error ve and ve supply lines FS4 62mA 1 16 A Output Group B 7 Skip A spare set of fuses is supplied with each located FS5 62mA 1 16 A Output Group B in a plastic bag behind removeable label shown above Figure 2 33 Optical Machine Interface Fuse Locations FS2 ve OUTPUTS A FS3 FS4 OUTPUTS B FS5 7 sve N Figure 2 34 Group and Group B Output Fuse Protection RENISHAWA 2 62 System Installation Connecting Your Optical Machine Interface to Your Machine s CNC Controller To connect the Optical Machine Interface to your machine s controller carry out the following Notes For specific information on how to connect the Optical Machine Interface to your machine s CNC controller refer to the Probe Systems Installation Manual For Machine Tools Publication Number H 2000 6040 and the OMI PSU3 Installation and User s Guide Publication Number H 2000 5062 For specific information on your machine s CNC controller and electrical circuit contact th
61. SU3 Power Supply Unit to the Mains Power Supply 2 36 Mounting Your MP700 Probe to Your Machine 2 76 Installing Your MP700 Probe System Stylus On centre Adjustment 2 77 to Your Machine Tool Optical Machine Interface Variant 2 39 Adjusting Your MP700 Probe System 2 82 Mounting Your PSUS Power Supply Unit to Your Machine Tool 2 39 Mounting the Optical Machine Interface to the Machine Tool 2 40 RENISHAW 2 2 System Installation Installing Your MP700 Probe System to Your Machine Tool OMM MI12 Interface Variants Note For specific information on how to connect the MP700 Probe System to your machine tool s CNC controller refer to the Probe Systems Installation Manual For Machine Tools Publication Number H 2000 6040 Where necessary this publication may be obtained through your nearest Renishaw company Mounting Your Optical Machine Module to Your Machine Tool WARNINGS IF THE SYSTEM IS TO BE INSTALLED ONTO A MULTI AXIS MACHINE TOOL ENSURE THAT THE OPTICAL MODULE PROBE S LED s HAVE LINE OF SIGHT WITH THE OPTICAL MACHINE MODULE IF TWO OPTICAL TRANSMISSION SYSTEMS ARE TO OPERATE IN CLOSE PROXIMITY TO ONE ANOTHER ENSURE THAT SIGNALS TRANSMITTED BY THE OPTICAL PROBE MODULE OF ONE SYSTEM WILL NOT BE
62. System Each fault is listed sequentially and offers both the possible causes and the rectification action that you will need to perform to recover from the fault Contained In This Chapter a Introduction 6 2 Fault Finding 6 2 5 6 2 Troubleshooting Introduction The troubleshooting information supplied within this document is based on Renishaw s vast experience of probing systems It provides information on the faults you are most likely to incur over the life of your MP700 Probe System Each fault is listed sequentially and offers both the possible causes and the rectification action that you will need to perform to recover from the fault Fault Finding PROBE SYSTEM FAILS TO SWITCH ON Possible Cause Rectification Action Probe is already switched on Check that probe is off Where necessary switch off the probe Dead Battery Change battery Battery has been incorrectly Check battery for correct fitted installation Probe is not aligned with Verify alignment Ensure optical receiver of OMM OMI OMM OMI fixtures are secure Swarf build up on optical Remove swarf receiver of OMM OMI Beam between optical Clear obstruction receiver of OMM OMI and the probe is obstructed RENISHAW Troubleshooting 6 3 PROBE SYSTEM FAILS TO SWITCH ON Continued Possible Cause Signal strength of OMI is too weak OMM is
63. TERISTICS RE 3 14 OMP OMI CHARACTERISTICS RE 3 15 SCREW TORQUE VALUES FIGURE 4 1 MI12 MACHINE INTERFACE UNIT PRINTED CIRCUIT BOARD RE 4 2 PROBE SWITCH ON OPTICAL ON TIME OUT OR OPTICAL ON OPTICAL OFF MODE RE 4 3 PROBE TRIGGER AND RESEAT CYCLE TYPICAL RE 4 4 PROBE ORIENTATION RE 4 5 PROBE RESET OPTICAL ON TIME OUT SELECTED RE 4 6 PROBE RESET OPTICAL ON OPTICAL OFF SELECTED RE 5 1 INSPECTION AND RENEWAL OF THE INNER AND OUTER DIAPHRAGMS RE 5 2 BATTERY INSTALLATION RENEWAL RE 5 3 STYLUS ON CENTRE ADJUSTMENT METHODS RE 5 4 STYLUS ON CENTRE ADJUSTMENT ADJUSTMENT PLATE METHOD RE 5 5 STYLUS ON CENTRE ADJUSTMENT CENTRE BALL METHOD RE 5 6 PROBE HEAD REMOVAL AND ASSEMBLY RE 5 7 PROBE SWITCH SETTINGS RE 5 8 OPTICAL MODULE PROBE SWITCH SETTINGS RE 5 9 REMOVAL OF THE OMM WINDOW AND LABEL RE 5 10 THE OMM RANGE SELECTION SWITCH RE 5 11 OMM RECEPTION AND TRANSMISSION RANGES RE 5 12 ASSEMBLY OF THE OMM WINDOW AND LABEL RE 5 13 REPLACING THE OMM PRINTED CIRCUIT BOARD RE 5 14 REMOVAL OF THE OMI WINDOW AND LABEL RE 5 15 RANGE SELECTION SWITCH SW 1 AND CONFIGURATION SWITCH SW2 RE 5 16 OPTICAL MACHINE INTERFACE UNIT OUTPUT WAVEFORMS RE 5 17 OMI RECEPTION AND TRANSMISSION RANGES RE 5 18 ASSEMBLY OF THE OMI WINDOW AND LABEL RE 5 19 REPLACING A FUSE WITHIN THE OMI RE 5 20 REMOVING REPLACING THE TOP COVER OF THE MI12 INTERFACE UNIT RE 5 21 MI12 MACHINE INTERFACE UNIT SWITCH
64. Typical Load Currents At 50mA Min Vo Supply Voltage VCC 2 4V Max Vo 2 4V At 20mA Min Vo Supply Voltage VCC 1 5V Max Vo 1 5V At 1 6mA TTL Min Vo Supply Voltage VCC 800mV Max Vo 800mV Quiescent current when output stage is ON Output High At 30V 10mA per stage At5V 3mA per stage Quiescent current when output stage is OFF Output Low Less than 1mA Note The total output load for Group A outputs should not exceed 100mA RENISHAWE System Installation 2 53 The OMI Wiring Configuration The OMI cable contains twelve colour coded cores Refer to Figure 2 28 below COLOUR SIGNAL Red 24V supply Grey Black Machine Earth Figure 2 28 Optical Machine Interface Wiring Chart 5 2 54 System Installation Typical Control Input Wiring The OMI is compatible with most popular machine controllers The following examples show how the unit can be connected into Fanuc controllers No problems are envisaged when connecting to other controllers EXAMPLE 1 FANUC WITH STANDARD SKIP 24V COMMON OR 0V COMMON This configuration see Figure 2 29 suits both 24V common and OV common signals With either 24V common or OV SKIP configurations the control is looking for a rising edge on the probe triggering As the Optical Machine Interface provides this requirement as standard no adjustments are necessary to switch SW2 see Figure 2 34 Figure 2 29 Connecting the Opt
65. W System Description 3 11 Optical Machine Module OMM Note Further information on the Optical Machine Module can be obtained from reading the Optical Machine Module Installation and User s Guide H 2000 5044 The OMM includes the following LED s refer to Figure 3 6 Purpose POWER Red Lit when the power supply is active Clear 3off Transmits infra red control Transmitting signals to the MP700 probe SIGNAL Green Lit when a signal is received from the MP700 probe START Yellow Lit when the MI12 Machine Interface Unit transmits a start signal The OMM mounted on the machine tool within the 360 output envelope of the OMP is both an optical transmitter and receiver As a receiver it waits passively for and collects signals passed from the OMP These are then passed to the MI12 machine interface unit for conversion When operating as a receiver transmitter the OMM also has the capability to receive a probe start signal from the MI12 machine interface unit It then transmits this signal to the OMP to effectively switch on the probe The OMM reception Rx and transmission Tx ranges can be adjusted and set by a range selection switch see Figure 3 7 Both the Rx and Tx ranges can be reduced if they become affected by optical or electro magnetic interference refer to Chapter 5 Maintenance and Adjustment for switch adjustment RENISHAWE 3 12 System Description 1 Po
66. WE System Description 3 19 Technical Data Probe Specification Probe Dimensions The dimensions of the MP700 Probe are as shown in Figure 3 12 115 8mm 4 56in ENSHAW 0 oX 24 5mm 62 0 96in WS 62 24in XY LL XY 16 5 16 5 Figure 3 12 MP700 Probe Dimensions RENISHAW 3 20 System Description Probe Specification Continued Primary application Machining centre inspection probe Life 10 Million Triggers Sense directions 5 way Trigger force 50mm stylus X Y 2gf 0 02N Z 15gf 0 15N Overtravel force 50mm stylus X Y 40gf 0 39N Z 590gf 5 79N Overtravel XY 16 5 Z 12mm 0 472 in Maximum recommended stylus length 200mm 7 87 in Recommended trigger speed 30mm min 1 18 in min Maximum number of triggers per second 3 Stylus Overtravel limits 50mm 1 96 in 22 0mm 22 0mm 12mm 0 87 in 0 87 in 0 47 in 100mm 3 93 in 37 0mm 37 0mm 12mm 1 45 in 1 45 in 0 47 in 150mm 5 89 in 51 5mm 2 04 in 200mm 7 87 in 66 5mm 66 5mm 12mm 2 62 in 2 62 in 0 47 in RENISHAWE System Description 3 21 Probe Specification Continued Technical Performance Styli Length a Repeatability maximum 2 value 0 25um 0 35um 0 50um 0 70um To be seen in any direction XY Pre travel Variation 0 25um 0 25um X Y Z three dimensional measurement maximum 1 0um 1 75um 2 5um 3 5um variation from a tr
67. Window Refer to Figure 5 18 1 Refer to View A and assemble the label 1 and secure with the two quick release screws 2 Rotate screws a quarter turn clockwise to hold label in place Visually examine the OMI body 3 for damage or scratching to the O ring location groove as shown in View A Visually examine the window 4 and O ring 5 for cleanliness as shown in View B Also ensure that both the window and O ring are undamaged Refer to View C and insert the two short screws 6 into the two threaded holes A in the window 4 Tighten the two screws to 0 3 0 7Nm 0 22 0 51 Ibf ft Lightly smear the O ring 5 with silicone grease and assemble window 4 to OMM body 3 Insert the two long screws 7 into the two plain holes B Tighten each screw a few turns at a time to gradually pull the window 4 evenly against the OMI body 3 There may be some resistance due to the compression of air trapped inside the Alternatively tighten screws 7 to pull window 4 evenly into the body of the OMI Finally tighten screws to 1 0 1 8Nm 0 74 1 32 Ibf ft RENISHAW Maintenance And Adjustment 5 33 Inspect O ring location groove for damage SUI MI a Ensure that the window and O ring are clean and undamaged View A 5 View 3 4 6 1 le View C 1 Label 2 Retaining Screw 2 Off 5 O Ring 3 OMI Body 6 Screw short 2 Of
68. Y UNDERSTAND THE SOFTWARE WITH WHICH YOU WISH TO DRIVE YOUR PROBE INCORRECT PROGRAMMING CAN RESULT IN DAMAGE TO BOTH THE MACHINE WORKPIECE AND TO THE PROBE ITSELF Note Before switching on the probe ensure that the probe shank is securely located within the machine tool spindle Ensure also that there is a direct line of sight between the Rx diodes of the OMP and the transmitting LED s of the OMM If probe switch on is to be initiated with an M code it is important that the probe is stationary in the machine for 1 1 seconds after the M code is sent Switching on the Probe OMM Variant Before operation the MP700 Probe must be made active by one of the following switch on options These options are user selectable and can be selected by adjustment of the SW2 switch located on the printed circuit board within the MI12 Machine Interface Unit see Figure 4 1 Refer to your MI12 Interface PSU3 Power Supply Installation and User s Guide H 2000 5073 for further information e Manual Start when the START button of the MI12 Machine Interface Unit is depressed Machine Start where code generated by the CNC controller passes through the MI12 Machine Interface Unit to the OMM The OMM then converts this signal to a pulse of infra red light recognisable to the OMP This option is pre set e Auto Start where an optical start signal is transmitted once every second and does not require a machine contr
69. _ a V VN d 25m 82ft peru MAXIMUM CABLE LENGTH WHEN EXTENDING FROM CUT BACK 5m 16 4ft STANDARD CABLE 25m 82ft TOTAL Extending the OMI cable to a length of 25 metres 82 feet Figure 2 22 Extending the OMI Cable RENISHAWj 2 44 System Installation Connecting the OMI Cable and Extension Cable Together Notes When connecting the OMI cable and extension cable together it is important to ensure that all screens are maintained throughout the cable joint Ensure that any connector used to join the OMI and extension cable together is fully screened The overall resistance of the OMI cable the extension cable and the coupling must not exceed 3 5 ohms Connect the OMI cable to the extension cable using a twelve pin circular multipole bayonet lock connector conforming to MIL C 26486 DEF STAN 59 35 Pattern 105 or BS 9522 F0017 Protection of the OMI Cable CAUTION FAILURE TO ADEQUATELY PROTECT THE OMI CABLE MAY RESULT IN SYSTEM FAILURE DUE TO CABLE DAMAGE OR THE INGRESS OF COOLANT Note Failure of the OMI due to inadequate protection of the cable will invalidate the warranty Whilst coolant and dirt are prevented from entering the OMI by a cable sealing gland it is important that the cable itself is protected from physical damage by fitting either flexible or rigid conduit The OMI is supplied with a Renishaw conduit adapter see Figure 2 3 which supports bo
70. all MPG supplies are in use then an alternative will need to be located Where this occurs refer to your machine builder for guidance Connection to the HSS from the Optical Machine Module requires a 5V supply As previously shown all connections are available on the Fanuc 0 M T SERIES For Fanuc 10 11 12 15 16 and 18 M T Controllers the 5V supply will need to be located elsewhere as it is not available on HSS connectors A 5V supply can usually be located on the Manual Pulse Generator MPG connector these are located as follows Fanuc 10 11 and 12 M T Controls CONNECTOR CA3 PINS 4 5 AND 6 located on either CRT MDI board or master PCB Fanuc 15 M T Controls CONNECTOR CA3 PINS 4 5 AND 6 located on board OP1E Fanuc 16 and 18 M T Controls CONNECTOR JA3 PINS 9 18 AND 20 located on main CPU board RENISHAW System Installation 2 57 EXAMPLE 3 CONNECTING TO A FANUC 15 M T CONTROLLER Refer to Figure 2 30 The High Speed Skip looks for a falling edge on a probe trigger standard skip looks for a rising edge As the Optical Machine Interface is not set to provide this requirement it will be necessary to adjust switch SW2 to the SKIP Normally High position as shown in Figure 2 30 below refer also to Setting Up the Optical Machine Interface later in this section FANUC 15 CONTROL Grey Black ve 5 to 30V Probe Status Output Low Battery Group User Input 0 Us
71. an and undamaged NUI View 6 4 J 7 View C 1 Label 5 O Ring 2 Retaining Screw 2 Off 6 Screw short 2 Off 3 OMM Body 7 Screw long 2 Off 4 Window Figure 5 12 Assembly of the OMM Window and Label 5 5 24 Maintenance And Adjustment Replacing a Faulty OMM Printed Circuit Board To replace a faulty printed circuit board PCB carry out the following refer to Figure 5 13 1 Screen Remove the window and label from the OMM refer to Removal of the Window and Label from the OMM earlier in this chapter Disconnect the wires from the terminal block Pull gently on the PCB s wire handle to remove the PCB from the OMM Visually inspect the PCB supports for damage if damage is evident return your OMM to Renishaw for repair Obtain a replacement PCB Part No A 2031 0043 Assemble the new PCB to the OMM Reconnect the wires to the terminal block as shown in Figure 5 13 Torque tighten each terminal block screw to between 0 25 and 0 4Nm 0 18 and 0 29 Ibf in Reassemble the label and window to the OMM refer to Replacement of the OMM Label and Window earlier in this chapter Green Yellow Green Brown PCB White Grey Yellow Wire Handle 7 1 PCB Support Figure 5 13 Replacing the OMM Printed Circuit Board RENISHAWE Maintenance And Adjustment 5 25 Maintenance and Adjustment of the Optical Machine Interface OMI Range Selectio
72. ant to remove this cover prior to probe use it is also vitally important to ensure that it is re assembled whenever the probe is to be subjected to a low pressure environment during transportation i e airfreight As the MP700 Probe is potentially sensitive to very low forces any distortion in the diaphragm s form will result in a reduction of the probe s performance By fitting the diaphragm protection cover you will ensure that the diaphragms will always retain their correct form Before using the probe remove the diaphragm protection cover Figure 2 40 The Diaphragm Protection Cover RENISHAW System Installation 2 73 Mounting Your MP700 Probe to a Shank There are two methods of mounting the probe to a shank By using the adjustment plate which allows the probe to slide across the shank end face By using the adjustment plate and optional centre ball which allows the probe to pivot on the shank and slide across the shank end face To mount your probe to a machine tool shank carry out the following refer to Figure 2 41 1 2 10 11 Remove the diaphragm protection cover 1 Assemble the stylus 2 Tighten the stylus to 2Nm 1 7 Ibf ft Release the two capscrews 3 Remove the battery cover 4 Disconnect and remove the battery 6 Release and remove the retaining screw 7 securing the cover 8 remove the cover Where applicable position centre ball 9 within location point prov
73. be switched off When set in the Time Out mode the probe will automatically switch itself off after 33 or 134 seconds if e No change in its state has occurred e An M code start signal has been received during the time out period The only exception to the above is that during the first 2 1 seconds following the initial M code start signal only a change in the state of the probe will renew the time out period RENISHAW System Operation 4 17 Switching Off the Probe in Optical On Optical Off Mode Notes In this mode it is not possible to switch the probe OFF until 4 2 or 8 4 seconds have elapsed following the M code start signal In either Optical On Time Out or Optical On Optical Off mode the probe can be switched back on 300 milliseconds after being switched off When set in the Optical On Optical Off mode the probe can be switched off by sending an M code start signal provided this signal is sent outside the debounce period 4 2 or 8 4 seconds from the time the switch on signal was sent To ensure that the probe turns off correctly ensure that the duration of the M code start signal does not exceed 190 milliseconds This will prevent multiple start signals being sent to the probe To achieve the maximum possible battery life always ensure that the probe has switched off correctly before storing it away in the tool carousel This should be done by ensuring that the interface error
74. ccount of how you tried to solve the problem Renishaw Subsidiary Companies All Renishaw subsidiary companies offering customer support services and the countries they serve are listed in Table 1 Renishaw Companies Around The World If your country is not listed please contact Product Support Department Metrology Division Renishaw Plc New Mills Wotton under Edge Gloucestershire England GL12 8JR Tel 44 01453 524524 Fax 44 01453 524901 RENISHAW 12 Before You Begin Table 1 Renishaw Subsidiary Companies Around the World Contact the following Renishaw Company Belgium See France Brazil Renishaw Latino Americana Ltda Cal ada dos Crisantemos 22 C C Alphaville C e p 06453 000 Barueri SP Brazil Tel 55 11 7295 2866 Fax 55 11 7295 1641 Canada See United States and Canada France Renishaw S A SIMCI S A 15 rue Albert Einstein Champs sur Marne 77437 Marne la Vall e Cedex 2 France Tel 33 1 64 61 84 84 Fax 33 1 64 61 65 26 Germany Renishaw GmbH Karl Benz Strasse 12 D 72124 Pliezhausen Germany Tel 49 712 797960 Fax 49 712 788237 Hong Kong Renishaw Hong Kong Limited Unit 4A 3 F New Bright Building 11 Sheung Yuet Road Kowloon Bay Hong Kong Tel 852 2753 0638 Fax 852 2756 8786 Indonesia Renishaw s Representative Office Jalan Cempaka Putih Tengah 17 F29 Taman Solo Jakarta 10510 Indonesia Tel 62 21 424 3934 62 816 979042 Fax 62 21 471 3934 Renishaw S p A Via dei
75. e Verify tightness of probe styli on centre adjustment mechanism and shank mounting Verify probe position Check on centre setting and if necessary adjust to within 20 of part tolerance Review software in accordance with manufacturer s instructions 5 6 6 Troubleshooting POOR REPEATABILITY AND ACCURACY Continued Possible Cause Calibration and probing speeds are not the same Calibrated feature has moved Measurement is occurring as the stylus leaves a surface Probing is being performed within the machine s acceleration and deceleration zones Probe feedrate is too high for machine controller Temperature variation is causing excessive movement in the machine and the workpiece Machine has poor repeatability due to loose encoders backlash tight slideways and or accident damage RENISHAWE Rectification Action Review software in accordance with manufacturer s instructions Verify position of calibrated feature Review software in accordance with manufacturer s instructions Review software in accordance with manufacturer s instructions Perform simple repeatability trials at various speeds Minimise machine and workpiece temperature changes Increase the frequency of calibration Perform a health check on your machine tool Troubleshooting 6 7 PROBE FAILS TO SWITCH OFF Possible Cause Probe set in Time Out mode Probe set
76. e e Straight styli with carbon fibre shaft and ruby ball recommended for straight styli exceeding 100mm 3 96 in in length on 3 axis machines and straight styli exceeding 50mm 1 96 in in length on moving head 5 axis machines e Straight styli with ceramic shaft and ruby ball recommended for straight styli up to 100mm 3 93 in in length Straight styli with steel shaft and ruby ball recommended for straight styli up to 50mm 1 96 in in length e Disc styli e Disc and ball styli When selecting a stylus it is important that the stylus length is kept to the minimum required to access all measurable features and that the stylus type offers the maximum possible stiffness Factors that effect stiffness are Joints in the styli that tend to reduce rigidity and should therefore be kept to the absolute minimum Stem diameters that are governed by the ball tip diameter of the stylus e Stem material that can be of stainless steel ceramic or carbon fibre RENISHAWE Fundamentals 1 7 It is also important to ensure that the stylus ball diameter chosen is as large as is practical This not only ensures that the stylus will be as stiff as possible but also reduces the stylus s susceptibility to surface form and surface finish Probing Techniques MP700 Probe The way in which a probe is used will have a dramatic effect on its accuracy Employing the following techniques will ensure that you achieve the b
77. e without loosing the alignment 6 Gradually and systematically tighten the four flat point grubscrews 10 backing off after each movement until the stylus run out is less than 20um if Fully tighten cone point grubscrews 12 to 6 8Nm 4 4 5 9Ibf ft 8 Continue adjustment using the four flat point grubscrews 10 This is achieved by using each in opposition to the other in order to move the probe first slackening one then tightening the other Using two 2 5mm Allen keys if required progressively tighten the four grubscrews as the final setting is approached 9 When the final setting is achieved bum 0 0002 in total stylus run out or better ensure that the four flat point grubscrews 2 are fully tightened to 1 5 3 5Nm 1 1 2 6lbf ft RENISHAW System Installation 2 81 10 Ensure cover seal 13 is correctly seated and lightly lubricate with mineral oil or grease 11 Reassemble cover 6 and secure with retaining screw 5 Torque tighten the retaining screw to 1 1 0 8 Ibf ft 12 Reinstall battery 4 ensuring correct polarity 13 Ensure battery cover seal 3 is correctly seated and lightly lubricate with mineral oil or grease 14 Assemble battery cover 2 and secure with the two capscrews 1 torque tighten the capscrews to 1 1Nm 0 8 Ibf ft 1 Capscrew 2 Off 8 Adjustment Plate 2 Battery Cover 9 Capscrew 4 Off 3 Battery Cover Seal 10 Flat Point Grubscrew 4 Off 4 Batte
78. e indexing on a horizontal axis machine do not exceed the rates given below for the stylus in use See VIEW B Figure 4 4 50mm 1 96 in Ceramic 100mm 3 93 in Ceramic 100mm 3 93 in Carbon Fibre 150mm 5 89 in Carbon Fibre 200mm 7 87 in Carbon Fibre Probe axis Figure 4 4 Probe Orientation RENISHAW 4 12 System Operation Resetting the Probe Note If the MP700 Probe is horizontally indexed or orientated about another axis above the recommended rate for the stylus used the probe may show a measurement offset or remain OPEN If this occurs the probe must be reset The method employed to reset your probe will be dependent upon the switch off method selected refer to Switching Off the Probe later in this chapter For operations that will regularly re orientate the probe the Optical On Time Out setting is recommended In all cases the probe must be stationary when reset is initiated The MP700 probe creates its own electronic reference during the auto calibration start up sequence and keeps this updated during operation whilst the kinematic location is seated PROBE CLOSED However the following circumstances may cause this datum to be lost indicated by the kinematic location deflecting PROBE OPEN A change in orientation e A horizontal index The probe being left triggered against the part for period greater than 30 seconds e A slow effectiv
79. e manufacturer or supplier of the machine tool to which you are installing the MP700 Probe System 1 Obtain ten bootlace ferrules Supplied 2 Prepare each core as necessary then in turn push the core through the shrouded end of one of the ferrules Ensuring the core wires are flush with the tip of the ferrule s copper tube crimp the ferrule onto the core by use of a dedicated crimping tool 3 Connect the OMI to your machine tool s power supply CNC controller and star ground point in accordance with the instructions provided in the Probe Systems Installation Manual For Machine Tools Publication Number H 2000 6040 and the OMI PSU3 Installation and User s Guide Publication Number H 2000 5062 The examples provided in Figure 2 29 through 2 31 show how to connect the Optical Machine Interface to a Fanuc control with a standard SKIP 24V common or OV common a Fanuc controller with High Speed Skip and a Fanuc 15 controller RENISHAW System Installation 2 63 Setting Up Your Optical Machine Interface To gain access to the OMI switches it is first necessary to remove the window and label from the OMI body Removal of the Window and Label from the OMI CAUTION DO NOT ALLOW LIQUIDS OR SOLID PARTICLES TO ENTER THE OMI BODY NEVER REMOVE THE WINDOW 3 BY TWISTING OR ROTATING BY HAND ALWAYS USE THE JACKING SCREWS 2 Note The window 3 must only be removed for the following reasons e To change fu
80. e measurement speed due to the combined use of a long styli and a shallow angle of approach known as a soft touch e Excessive vibration during the auto calibration start up sequence To recover from any of these conditions probe continuously open the probe must be reset using the method appropriate to your probe setting This may be Optical On Time Out where another M code start signal must be sent 2 1 seconds after the initial M code start signal was sent to reset the probe Following reset the interface will show the probe as open for up to 948ms after the error signal has cleared see Figure 4 5 Optical On Optical Off where the method used to reset the probe is dependent on the time elapsed from the initial M code start signal and the debounce period Between 2 1 seconds and 4 2 or 8 4 seconds a single M code start signal will reset the probe After 4 2 or 8 4 seconds the single M code start signal will just switch off the probe and a further M code start signal will be required to switch the probe back on RENISHAW System Operation 4 13 Resetting the Probe in Optical On Time Out Mode Notes The MP700 probe will not respond to another M code start signal until 2 1 seconds has elapsed following the initial M code start signal The interface will report a probe status of OPEN for up to 948mS after the interface ERROR signal has cleared probe CLOSED If the MP700 probe is horizontally indexed
81. e ordered to support and maintain your MP700 Probe System over its lifetime All parts listed may be ordered directly through any Renishaw company for a full list of these refer to Before You Begin at the front of this publication Part Number Part Description A 2107 1035 MP700 35 Probe Kit consisting e MP700 35 Probe with Battery A 2107 0035 e Stylus e Optical Machine Module A 2075 0142 e MI12 Machine Interface Unit A 2075 0142 e Tool Kit A 2085 0020 A 2107 1070 MP700 70 Probe Kit consisting e MP700 70 Probe with Battery A 2107 0070 e Stylus A 5000 3709 Optical Machine Module A 2075 0142 e MI12 Machine Interface Unit A 2075 0142 Tool Kit A 2085 0020 A 2107 0035 MP700 35 Probe with Battery and Tool Kit A 2107 0070 MP700 70 Probe with Battery and Tool Kit A 2107 1030 Probe Outer Diaphragm Replacement Kit A 2085 0020 Probe Tool Kit comprising e 1 98mm diameter Stylus Tool e 1 5mm AF Allen Key e 2 0mm AF Allen Key two e 2 5mm AF Allen Key e 3 0mm AF Allen Key e 4 0mm AF Allen Key A 5000 3709 Ceramic Stylus PS3 1C Ceramic Stylus 50mm long with 6mm diameter ball A 5003 1436 Carbon Stylus 50mm long 4 Carbon Fibre Stylus 50mm long with 6mm diameter ball A 5003 1458 Carbon Stylus 100mm long M4 Carbon Fibre Sylus100mm long with 6mm diameter ball Part Number A 5003 1255 A 5003 1057 P BT03 0001 A 2033 0576 A 2
82. ents to provide the true position of an inspection surface Datuming within a bored hole is also required in order that the position of the stylus ball centre in relation to the centreline of the machine spindle can be determined On machines where best fit algorithms cannot be applied to the calibration the following alternative method may be used to establish the stylus ball centre height Offset i Trigger point P1 Trigger point P2 The stylus centre height Pc P1 P2 2 RENISHAW Fundamentals 1 3 As each spindle probe system is unique it is imperative that you datum your probe Before it is used for the first time When new replacement stylus is fitted If it is suspected that the stylus has become distorted Periodically to allow for any thermal growth of the machine tool If the repeatability of relocation of the probe shank is poor datuming may be required each time the probe is selected Whenever the probe is moved from one machine tool to another Whenever a new shank is fitted to the probe RENISHAWA 1 4 Fundamentals Probe Datuming MP700 Probe Notes Due to the excellent volumetric measuring performance of the MP700 Probe a constant electronic ball radius can be assumed for most applications Only one calibration radius is required for vector measurement moves X Y Z Best accuracy will be achieved by minimising stylus on centre errors during probe in
83. er Diaphragm CAUTION DO NOT ATTEMPT TO RENEW THE INNER DIAPHRAGM IF DAMAGE HAS OCCURRED RETURN THE PROBE TO YOUR SUPPLIER FOR REPAIR Visibly inspect the inner diaphragm 6 for damage using 10x magnification and bright light If the diaphragm is found to be damaged return the probe to your supplier for repair Renewal Replacement of Outer Diaphragm To renew replace the outer diaphragm 5 1 If required obtain a probe outer diaphragm replacement kit Part no A 2107 1030 CAUTION DO NOT USE SHARP OR METALLIC OBJECTS TO FIT THE DIAPHRAGM OTHERWISE DAMAGE WILL OCCUR 2 Install existing new outer diaphragm 5 into the probe head 7 referring to Figure 5 1 to ensure the correct orientation Take care to ensure that the inner lip of the diaphragm is flush with the centre groove and is free of deformation RENISHAW Maintenance And Adjustment 5 5 Assemble the outer ring 4 to the probe head and secure with three screws 3 Torque tighten screws to 0 3Nm 0 22 Ibf ft Lightly lubricate O ring 8 with lubricating oil and assemble the probe head cover 2 Assemble the stylus 1 to the probe head torque tighten the stylus to 2Nm 1 47 Ibf ft RENISHAW 5 6 Maintenance And Adjustment Battery Installation Renewal To renew the battery refer to Figure 5 2 1 Release the two capscrews 1 securing the battery cover 2 to the optical module probe 3 2 Remove the battery cover
84. er Input 1 Error ve OV User Input 2 OV NC 5V CON CA3 Pin 5 HSS CON CA8 Pin 3 OV CON Pin 4 OV er M Code Switch 24V ve 5 to 30V Skip Group ve 0V 4 OMI SWITCH SW2 PROBE SKIP LOW BAT ERROR STATUS Note High Speed Skip looks for a falling edge on a probe trigger standard skip looks for a rising edge on a probe trigger O M I Switch SW2 should therefore be adjusted to give SKIP Normally High as shown opposite PROBE SKIP LOW BAT ERROR STATUS Figure 2 30 Connecting the Optical Machine Interface to a Fanuc M T 15 Controller 5 2 58 System Installation EXAMPLE 4 INSTALLATION WITH INSPECTION AND TOOL SETTING PROBE Refer to Figure 2 31 On machines where the Optical Machine Interface is to be integrated with a toolsetting probe input and only one probe input is provided on the machine s controller an M code can be utilised to drive an external relay and effectively select which probe is to be monitored CONTROL Probe Status from O M I PROBE INPUT Probe Status from Toolsetter Figure 2 31 Installing the Optical Machine Interface to a Machine Tool with Inspection and Toolsetting Probe Systems RENISHAWE System Installation 2 59 Connecting the Optical Machine Interface To An External Remote Audible Indicator The Skip Output B can be utilised to operate an external remote audible indicator
85. er three This can be a requirement on systems such as Fanuc controls where the High Speed Skip HSS option is fitted The HSS operates at 5V whereas the others operate at 24V The Skip Output B can also be utilised to operate an external remote audible indicator refer to Connecting the Optical Machine Interface to an External Remote Audible Indicator later in this chapter RENISHAW System Installation 2 51 Pink 4 5 to 30V nominal gt Turquoise p gt Probe Staus gt violet W Low Battery 5 gt Error Blue a ve OV Orange lt q ve 5to 30V nominal Yellow skip B Grey 44 0V Brown A v Start Input White as 2ay Red ov Black Power Supply 15 to 30V Screen Grey Black Machine Ground Star Point Figure 2 26 Optical Machine Interface Wiring Configuration and Output Groupings ho Typical Output Stage A sA ve supply 24V Nominal or 5V High Speed Skip HSS W SKIP Output B 4 Fuse ve supply OV Figure 2 27 Typical Output Stage SKIP Output B RENISHAW 2 52 System Installation Output Overload Protection Each output is protected from overload by fuses refer to Optical Machine Interface Fuses later in this section Maximum Current 50mA peak Maximum Voltage 36V peak Minimum Voltage 4V Switch on time Less than 10us Switch off time Less than 10us Signal Levels at
86. eshold Trigger threshold Stylus vibration worst case example La RENISHAW RENISHAWE Workpiece Probe stylus touches workpiece Stylus off 1 micron the surface pretravel Approximately equal to 1 micron pretravel due to delay time 1 micron PROBE STATUS Open Triggered Closed Seated Figure 4 3 Probe Trigger and Reseat Cycle Typical 5 4 10 System Operation Probe Orientation Rotation About An Independent Axis e g Moving Head Machines To avoid the probe going OPEN during probe orientation Such as on a 5 axis moving head machine do not exceed the rates given below for the stylus in use The rates given apply at a radius of 141mm from the probe stylus location face to the axis of rotation refer to View A Figure 4 4 50mm 1 96 in Ceramic 100mm 3 93 in Ceramic 100mm 3 93 in Carbon Fibre 150mm 5 89 in Carbon Fibre 200mm 7 87 in Carbon Fibre Note The above table takes no account of spindle rotation during probe orientation RENISHAWE System Operation 4 11 Rotation About the Probe Axis Spindle Indexing Note The following recommendations apply only when the probe is horizontal There are no restrictions on the orientation rate about the axis with the probe vertical To avoid the probe from going OPEN when it is horizontal and rotated about its own axis e g spindl
87. est results each and every time you use your MP700 Spindle Probe To ensure consistent results always use the same probing speed and velocity during inspection as you used when the probe was datumed Given a typical probing speed of 15 30 mm 0 457 1 18 in per minute it is important to calculate the time that the machine will take before it reaches a constant probing velocity Thus when inspecting features that restrict the space within which the stylus can move always select a ball diameter that will provide an adequate amount of stylus travel prior to the probe triggering Never capture data in the acceleration deceleration zones Avoid taking probe measurements as the probe reseats due to debounce filters Whenever possible always measure features top and bottom By doing this you will always identify any taper and distortion that may exist in the feature s form Wherever possible always measure distances using single points in the same way as you would use a micrometer depth gauge height gauge etc Never assume straightness squareness or parallelism Always check each feature to make sure The back off distance may need to be increased over that used for conventional probes due to the 8ms electronic time delay of the MP700 Probe Avoid leaving the probe triggered against the surface of a workpiece for extended periods probe signals can invert after 30 seconds in the triggered condition RENISHAWE 1 8 F
88. f 4 Window 7 Screw long 2 Off Figure 5 18 Assembly of the OMI Window and Label RENISHAWE 5 34 Maintenance And Adjustment Replacing an OMI Fuse To replace a fuse carry out the following refer to figure 5 19 1 Remove the window and label from the OMI in accordance with Removal of the Window and Label from the OMI earlier in this chapter Remove the fuse pack Part No A 2115 0034 from the OMI and select the correct fuse If the required fuse has already been used additional fuse packs for the OMI may be obtained through your nearest Renishaw company For a list of Renishaw companies refer to Before You Begin at the front of this document Pull the defective fuse from its location and discard Insert the new fuse within the location holes provided ensuring its orientation is as shown in Figure 5 19 Replace the fuse pack within the plastic bag provided and place back within body of OMI for safe keeping Reassemble the label and window to the OMI in accordance with Replacement of the OMI Label and Window earlier in this chapter FS1 250 1 4 A Input Power The input power supply is fuse protected by a 250mA fuse FS2 125mA 1 8 Output GroupA Probe Bat Low Each group of outputs is fuse protected on its respective FS3 125mA 1 8 A Output Group A__ Error ve and ve supply lines A spare set of fuses is supplied with each O M I located FS5 62mA 1 16 A Output Group
89. g 4 Output Terminal Block 2 Mains Plug and Socket 5 POWER LED 3 ON OFF Switch Figure 2 12 PSU3 Power Supply Unit RENISHAWE System Installation 2 21 Connecting Your System Components Together OMM MI12 Interface Variant The MP700 Probe System should be connected electrically as shown in Figure 2 13 The interface can support two OMM s from terminals 1 9 Audible Indicator The audio extension terminal 20 supports a remote audible indicator or lamp not available from Renishaw usually located near the machine operator If machine power then maximum AN _ OMM Cable YELLOW ENEE voltage is 50V supplied by Renishaw 25 1mm x 25 metres long WHITE wwe 2 SIGNAL SIGNAL 1 20 2in x 82ft long gc M START 1 AN BROWN 4 o ov BROWN GREEN ink E PE che AN Cable overall screened CT 7 SIGNAL 2 and insulted each core AUDIO EXTENSION CNC 7 strands A 8 SIGNAL SIGNAL 2 ve MACHINE 20 2mm insulated START 2 START Machine EI li Control SCREEN S ERORE GREEN YELLOW SSR LOW BATT SSR PROBE STATUS Machi SSR Three low voltage 24V Alternative Star wires each 16 strands Ground point 2mm insulated rid GND Notes 1 The supply OV and all OV signal reference terminals are isolated from case 2 Grounding of the case and OV should be made to comply with all relevant safety standards Care should be taken to avoid ground coupled interface Please consult your Renishaw supp
90. ger direction and subsequent bending of the stylus prior to a trigger taking place Although probe pre travel is typically small 1um if long non rigid stylus configurations or high trigger forces are used it can become a major source of measurement error The MP700 probe virtually eliminates pre travel variation e Probe hysteresis that occurs as a direct consequence of previous trigger direction and reseat Although probe hysteresis is comparative to undirectional repeatability it is more greatly affected by stylus length and trigger force Whilst in practice an element of these error sources may be present in each measurement taken the degree of presence is significantly influenced by e Any datuming and measuring techniques employed e The model and type of probe used The type of feature being probed RENISHAWE System Installation 2 1 CHAPTER 2 System Installation This chapter provides step by step instructions to assist you in installing and connecting the MP700 Probe System to your machine tool Contained In This Chapter Installing Your MP700 Probe System to Your Machine Tool OMM MI12 Extending the OMI Cable 2 42 Interface Variant 2 2 Protection of the OMI Cable 2 44 Mounting Your Optical Machine Module to Your Machine Tool 2 2 Connecting Your System Compone
91. he MI12 Machine Interface Unit as follows If your system does not include the PSU3 Power Supply Unit because a 24 Volt supply is available from your machine tool refer to Connecting the MI12 Machine Interface Unit to the Machine Tool s CNC Controller and 24 Volt Power Supply later in this chapter Notes Further information on connecting the MI12 Machine Interface to the PSU3 Power Supply Unit may be obtained by reading the MI12 Interface PSU3 Power Supply Installation and User s Guide Publication Number H 2000 5073 It is recommended that the wires used to connect the PSU3 Power Supply Unit to the MI12 Machine Interface Unit conform to DEF 61 12 part 6 type 2 BS4808 or equivalent The output voltage of the PSU3 Power Supply Unit is 24 volts dc 1 Obtain three suitable lengths of 1 55mm nominal diameter PVC or PTFE insulated wires Each wire should contain sixteen 0 2mm diameter strands It is recommended that the following colours are used Connection Colour of Wire 2 Release and remove the gland nut 4 from the left hand gland connector 5 when looking down on the printed circuit board at rear of the MI12 Machine Interface Unit Remove the grommet 6 and fibre washer 7 from the gland nut 3 Assemble the gland nut 4 fibre washer 7 and grommet 6 to the three wires 10 RENISHAW System Installation 2 25 4 Insert the three wires 10 through the left hand gland connector 5 when looking
92. he MP700 s Optical Module Probe OMP conforms to that shown in Figure 2 20 Mounting the OMI The OMI may be mounted within the machine tool cabinet in one of two ways see Figure 2 21 e By screwing the body of the OMI directly to the cabinet wall e By first mounting the OMI to the mounting bracket supplied and then mounting the bracket to the cabinet wall This is the recommended method as it allows the OMI to be pivoted to provide the best possible angle RENISHAW System Installation 2 41 At maximum spindle movement OMP OMM beams must overlap Figure 2 20 OMI Operating Requitements dimensions mm inches 80 3 14 80 3 14 25 25 0 98 0 98 Install O M I with cable a exiting from lower side 3 Holes 3 grip protrusions for good coolant run off 6 400 25 100 5 3 95 at mu 21 8 NI 19 E EE 0 08 29 BS 0 07 pir c SNO eL ul cl NN QN Y o T N 29 2 45077 0 07 90 3 54 Paired holes permit OMM mounting in alternative orientation Figure 2 21 Mounting the OMI 5 2 42 System Installation Extending the OMI Cable Where necessary the OMI cable may be extended in the following manner refer to Figure 2 22 an additional 10 metres 16 4 ft to achieve a total length of 18 metres 59 ft by fitting Renishaw extension cable Part Number M 2115 0045 CAUTION IF THE OMI CABLE IS
93. ical Machine Interface to a Fanuc Controller with CONTROLLER O M I Grey Black Screen 24V 15 to 30V Power Supply OV 24V NC ve 5 to 30V uoise User Input 0 3 Probe Status User Input 1 Low Battery Group A OV NC ve OV 24V NC ve 5 to 30V eu Skip Skip Group Gey B OV NC Grey ve 0V ud OV O ve M Code Switch Start Input 24V ve Standard Skip 24V Common or 0V Common RENISHAW System Installation 2 55 EXAMPLE 2 FANUC CONTROLLERS WITH HIGH SPEED SKIP CAUTION ALTHOUGH CONNECTION TO A HIGH SPEED SKIP IS STRAIGHTFORWARD WHEN THE MACHINE BUILDER HAS PROVIDED THE OPTION THE TASK OF RETROFITTING THE OPTION MAY NOT BE POSSIBLE IF THE MACHINE BUILDER S CONFIGURATION DOES NOT PERMIT ITS USE RELEVANT HARDWARE OPTIONS THAT MAY HAVE BEEN INSTALLED PROVIDE NO GUARANTEE THAT THE OPTION WILL WORK IN PRACTICE IT IS THEREFORE ESSENTIAL TO CONSULT THE MACHINE BUILDER BEFORE ATTEMPTING THIS INSTALLATION The High Speed Skip HSS is located as follows Fanuc 10 11 12 and 15 M T Controllers CONNECTOR MRE20 RMD Fanuc 10 MR20 RM Fanuc 11 CA19 OIPO2 Slot location Fanuc 12 26 Slot location Fanuc 15 Fanuc 0 M T C SERIES CONNECTOR M12 PIN 14 HSS PIN 1 OV PIN 5 5V Fanuc 16 and 18 M T Controllers CONNECTOR JAS CNC Option 2A 2B Board or I O Card E to H RENISHAWE 2 56 System Installation Note If no 5V termination is available i e
94. icate that the signal is too weak or does not exist By turning yellow to indicate that the signal is marginal and that the OMI is at the edge of its operating envelope By turning green to indicate that the signal is strong Probe status is indicated both by The probe status LED within the body of the OMP flashing green The PROBE STATUS LED housed within the front panel of the OMI turning green to indicate that the probe is seated If the probe is unseated this PROBE STATUS LED will turn red The probe status LED within the body of the OMP will also flash red Low battery power is indicated by the LOW BAT LED housed within the front panel of the OMI This flashes on and off at four times a second to indicate a battery life of less than 60 minutes A completely dead battery is indicated when the ERROR LED within the front panel of the OMI remains constantly red If the probe status indications are satisfactory an inspection program can be initiated to drive the probe as required refer to your software or machine tool documentation RENISHAWE 4 8 System Operation Probe Trigger and Reseat Cycles Typical Note Although factory set at 8 milliseconds the probe output signal delay can also be set to zero 2 or 16 milliseconds refer to Chapter 5 Maintenance and Adjustment The purpose of the probe output delay is to prevent triggers occurring due to rapid traversing or machine vib
95. ided at top of probe Assemble the adjustment plate 10 to the probe and secure with four capscrews 11 Torque tighten capscrews to 5 1Nm 3 76 Ibf ft Fully release the four flat point grubscrews 13 then grease the two cone point grubscrews 15 and fit to shank 14 Mount the adjustment plate 10 to the shank 14 and secure in position by lightly tightening cone point grubscrews 15 If stylus on centre adjustment is to be carried out using the adjustment plate without the ball carry out steps 12 through 16 and then perform stylus on centre adjustment If the ball and adjustment plate method is to be used perform stylus on centre adjustment without completing steps 12 through 16 RENISHAWE 2 74 System Installation 12 13 14 15 16 Ensure cover seal 12 is correctly seated and lightly lubricated with mineral oil or grease Reassemble cover 8 and secure with retaining screw 7 Tighten the retaining screw to 1 1Nm 0 8 Ibf ft Reinstall battery 6 ensuring correct polarity Ensure the battery cover seal 5 is correctly seated and lightly lubricated with mineral oil or grease Assemble the battery cover 4 and secure with the two capscrews 3 Tighten the two capscrews to 1 1Nm 0 8 Ibf ft RENISHAWE System Installation 2 75 1 Diaphragm Protection Cover 9 Centre Ball 2 Stylus 10 Adjustment Plate 3 Capscrew 2 off 11 Capscrew 4 off 4 Battery Cover 12 Cover Seal
96. ine tool Chapter 3 System Description which provides detailed information on the MP700 Probe System and its individual parts Chapter 4 System Operation which provides detailed instructions on how to operate the MP700 Probe System Chapter 5 Maintenance And Adjustment which provides a complete guide to the maintenance overhaul and adjustment of the MP700 Probe System Chapter 6 Troubleshooting which provides specific information on how to troubleshoot the MP700 Probe System RENISHAWE 10 Before You Begin Support Services The Renishaw Group World wide Renishaw stands at the forefront of manufacturing technology Its products give manufacturers world wide the ability to machine components right first time with traceability Subsidiary companies exist in the USA Japan Germany France Italy Spain Switzerland Hong Kong The Republic of Singapore and The Peoples Republic of China These subsidiary companies are responsible for the sales product support and customer service of the Group s products Distributors have also been appointed in many other countries around the globe The Renishaw Product Support Network The Renishaw Product Support Network offers you a wide range of choices as well as access to high quality responsive technical support staff Also because Renishaw recognises that support needs vary from user to user the Renishaw Product Support Network is structured in a way that allows you to ch
97. ings To replace a broken window defective PCB or OMM cable Refer to Figure 5 9 1 Using a 2 5mm AF hexagon Allen Key remove the two short screws 1 and the two long screws 2 securing the window 3 to the OMM body 4 2 Insert the two long screws 2 into the two threaded holes A 3 Alternately tighten the long screws 2 to evenly jack the window 3 from the OMM body 4 Gently remove the window from the OMM body 4 Release the label 6 from the OMM body by turning the two quick release screws 5 a 1 4 turn counterclockwise Carefully lift the label from the OMM body to gain access to the range selection switch see 5 5 20 Maintenance And Adjustment 1 Screw short 2 Off 4 OMM Body 2 Screw long 2 Off 5 Retaining Screw 3 Window 6 Label Figure 5 9 Removal of the OMM Window and Label Adjustment of the Range Selection Switch Note The OMM Rx and Tx ranges should only be adjusted by suitably qualified personnel and only when the OMM is known to be affected by optical or electro magnetic interference Adjustment should only prove necessary in extreme cases Adjust the range selection switch Figure 5 10 to the setting shown below to increase or decrease the Reception Rx and Transmission Tx ranges to the percentage you require refer to Figure 5 11 RENISHAW Maintenance And Adjustment 5 21 R
98. ion 2 5 Protection of the OMM Cable CAUTION FAILURE TO ADEQUATELY PROTECT THE OMM CABLE MAY RESULT IN SYSTEM FAILURE DUE TO CABLE DAMAGE OR THE INGRESS OF COOLANT Note Failure of the OMM due to inadequate protection of the cable will invalidate the warranty Whilst coolant and dirt are prevented from entering the OMM by a cable sealing gland it is important that the cable itself is protected from physical damage by fitting either flexible or rigid conduit The OMM is supplied with a Renishaw conduit adapter see Figure 2 3 which supports both methods 1 Cable Sealing Gland 2 Gland Nut 3 Adapter Body 4 Gland Nut Figure 2 3 The Renishaw Conduit Adapter RENISHAWE 2 6 System Installation Fitting Flexible Conduit to the OMM Cable Notes It is recommended that Thomas and Bretts 1 4 in 11mm diameter SHURESEAL Part Number TBEF 0250 50 or equivalent is used when protecting the OMM cable with flexible conduit Use plastic olive 5 when fitting flexible conduit to the conduit adapter When loosening gland nut 6 it is important to ensure that gland nut 1 is not inadvertently loosened To fit flexible conduit to the OMM cable see Figure 2 4 1 Cut flexible conduit 7 to required length 2 Release and remove gland nut 6 from screwed adapter 2 Take care not to slacken gland nut 1 3 Remove gland nut 6 from the OMM cable 3 4 Carefully thread the OMM cable 3 thr
99. ion Action Renew battery PROBE IS TRANSMITTING SPURIOUS READINGS Possible Cause Damaged cables Electrical or optical interference System malfunctioning or inducing intermittent errors RENISHAWE Rectification Action Check all cables for damage Renew cables if damage is found Move transmission cables clear of any cables carrying high voltage currents Shield from intense light sources e g Xenon beacons Electrically isolate OMM from the machine to prevent any possibility of an earth loop Ensure there are no arc welders stroboscopes or other high intensity light sources in close proximity to the probe system Troubleshooting 6 9 PROBE IS TRANSMITTING SPURIOUS READINGS Continued Possible Cause Poorly regulated power supply Excessive machine vibration Lose mountings or stylus Rectification Action Ensure that the power supply is correctly regulated Eliminate machine vibration Check and tighten mountings Tighten stylus PROBE FAILS TO RESEAT CORRECTLY Possible Cause Probe trigger occurred on reseat Inner and or outer diaphragm is damaged Rectification Action Move stylus clear of workpiece Inspect renew diaphragms in accordance with Chapter 5 Maintenance and Adjustment 5 6 10 Troubleshooting THIS PAGE LEFT INTENTIONALLY BLANK RENISHAWE SPARES LIST The following table contains a complete list of spares that may b
100. irectives 89 336 EEC 91 263 EEC 92 31 EEC EMC 93 68 EEC CE Marking All relevant safety information including that incorporated in the installation instructions user instructions and maintenance instructions must be observed FCC Information to User FCC Section 15 105 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 used in accordance with this Installation and User s Guide may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case you will be required to correct the interference at your own expense Information to User FCC Section 15 21 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 Special Accessories FCC Section 15 27 The user is cautioned that any peripheral device installed with this equipment such as a computer must be connected with a high quality shielded cable to ensure compliance with FCC limits RENISHAW Before You Begin 1 Table of Contents BE
101. irt machining residue and or coolant It is therefore important that the probe is maintained in a clean condition free of grease or oil and that both the inner and outer diaphragms are periodically inspected as follows refer to Figure 5 1 Removal and Inspection of the Outer Diaphragm CAUTION THE PROBE IS A PRECISION INSTRUMENT AND CAN BE EASILY DAMAGED To inspect the outer diaphragm 5 1 Unscrew the probe stylus 1 from the probe head 7 2 Unscrew the probe head cover 2 from the probe head 3 Visually inspect the outer diaphragm 5 for damage using 10x magnification and bright light If the diaphragm is found to be damaged renew in accordance with Renewing the Outer Diaphragm later in this chapter This should only be undertaken following satisfactory inspection of the inner diaphragm RENISHAWE Maintenance And Adjustment 5 3 1 Stylus 6 Inner Diaphragm 2 Probe Head Cover 7 Probe Head 3 Screw 3 off 8 O Ring 4 Outer Ring 9 Probe Rear Seal 5 Outer Diaphragm Figure 5 1 Inspection and Renewal of the Inner and Outer Diaphragms 5 5 4 Maintenance And Adjustment To remove the outer diaphragm 5 1 Release and remove the three screws 3 securing the outer ring 4 to the probe head 7 Remove outer ring from probe head 2 Gently remove the outer diaphragm If undamaged carefully wash away any debris If damage is evident discard Inspection of Inn
102. kwise Carefully lift the label from the OMI body to gain access to the OMI switches and terminal block see Figure 5 15 Switch Settings The Optical Machine Interface Unit incorporates the following switches see Figure 5 15 it is important that where necessary each of these switches are set to suit your specific application Switch SW1 CAUTION ALTHOUGH SWITCH SW1 ACTS PRIMARILY AS A RANGE SELECTOR IT ALSO ALLOWS YOU TO SELECT THE WAY IN WHICH THE PROBE IS SWITCHED ON THE MP700 PROBE MUST ONLY EVER BE SWITCHED ON USING A MACHINE START SIGNAL THE AUTO START SETTING MUST NEVER BE USED Switch SW1 is supplied factory set as shown in Figure 5 15 i e to MACHINE START with both the reception Rx and transmission Tx ranges set to 10096 This switch may be used to adjust the optical range setting for signal transmission and reception refer to Adjustment of the Range Selector Switch SW1 later in this chapter In order that a MACHINE START signal can be initiated an input of between 4 25V at 1mA and 30V at 10mA is required between the START wires WHITE ve and BROWN ve This is TTL compatible when connected between 5 and TTL output and is an isolated input The minimum pulse width is 1ms Switch SW2 This switch enables Normally High and Normally Low options to be selected for PROBE STATUS SKIP LOW BAT and ERROR to produce the output waveforms shown in Figure 5 16 The switch is factory set to the
103. l Machine Interface OMI Note Further information on the Optical Machine Interface can be obtained from reading the Optical Machine Interface PSU3 Power Supply Installation and User s Guide H 2000 5062 The OMI an optional alternative to the more traditional OMM and MI12 Machine Interface Unit includes the following LED s refer to Figure 3 10 LED Purpose START Lit when a start signal is transmitted to the probe Yellow This LED will Flash once when a machine controlled start signal is commanded Flash continuously at one second intervals when the system is set to Auto Start SIGNAL Lit when there is power to the system and indicates Tricolour the infra red signal strength received from the probe This LED will Turn red if the signal is too weak Turn_yellow if the signal is marginal Turn green if the signal is OK Note During a start transmission this LED will indicate all three colours in sequence If optical interference is received whilst the probe is not transmitting the LED will flash yellow or green 3 Clear Transmit infra red control signals to the probe Transmit LOW BAT Flashes when the battery needs replacing Red PROBE Lit when the power to the system is on This LED will STATUS Bicolour Turn green when the probe is seated Turn_red when the probe is triggered or when an error has occurred ERROR Lit when an error exists
104. l contact Thus when the probe contacts a surface and subsequently triggers i e deflection of the stylus 4 causes the plate to deflect or pivot on one or more of these bearing points an increase in the electrical resistance through the Kinematic location occurs Once detected this increase in electrical resistance causes the probe system to produce a binary signal to inform the CNC controller that data should be taken As the probe moves away from the surface spring force causes the plate to reseat When the Kinematic location is seated the probe is referred to as Closed When the Kinematic location is deflected the probe is referred to as Open In strain gauge technology touch trigger probes such as the MP700 each bearing point acts only in a mechanical sense to maintain the probe mechanism in an exact but flexible position Thus ensuring that the stylus 4 always returns to the same position RENISHAWE 1 10 Fundamentals 4 1 Pivotal Plate 3 Helical Compression Spring 2 Bearing Point 4 Stylus Figure 1 1 Kinematic Location Typical Strain Gauge Technology Touch Trigger Probes The latest machine tool probe technology to be developed by Renishaw virtually eliminates measurement errors due to pre travel variation see Figure 1 2 By utilising active silicon strain gauges to monitor the forces generated between the stylus and the workpiece these next generation probing systems s
105. lier for wiring details of special OMM C s Figure 2 13 MP700 Probe System Wiring Diagram OMM MII2 Interface Variant 5 2 22 System Installation Connecting Your OMM MI12 Machine Interface Unit and PSU3 Power Supply Unit Together Connecting the OMM and MI12 Machine Interface Unit Together Refer to Figure 2 14 1 Release and remove the four screws 1 securing the top cover 2 to the MI12 Machine Interface Unit 3 remove the cover 2 Release and remove the gland nut 4 from the right hand gland connector 5 when looking down on the printed circuit board at the rear of the MI12 Machine Interface Unit Remove the grommet 6 and the fibre washer 7 from the gland nut 3 Assemble the gland nut 4 fibre washer 7 and grommet 6 to the OMM cable 8 4 Insert the OMM cable 8 through the right hand gland connector 5 when looking down on the printed circuit board Note Wiring instructions for connecting the OMM cable to the terminal block 9 of the MI12 Machine Interface Unit are shown diagrammatically on the underside of the top cover 2 For installation purposes the OMM cable is diagrammatically referred to as OMM 1 see Figure 2 13 5 Connect the OMM cable 8 to the terminal block 9 in accordance with the wiring diagram provided on the underside of top cover 2 see also Figure 2 13 6 Slide the grommet 6 and fibre washer 7 along OMM cable until the grommet ab
106. llowing circumstances e Where alignment must be as exact as possible due to the use of probe vector software Where the probe must be parallel to the spindle axis to prevent the stylus stem contacting the workpiece when gauging deep holes e Where the machine s control software is unable to compensate for the offset of the stylus pe fi O Adjustment Plate with Centre Ball Figure 2 42 Stylus On centre Adjustment Methods 5 2 78 System Installation Stylus On centre Adjustment Using Adjusting Plate CAUTION DO NOT ROTATE THE PROBE RELATIVE TO THE SHANK DO NOT HIT OR TAP THE PROBE DURING THE FOLLOWING PROCEDURE Refer to Figure 2 43 1 2 Where necessary install the probe 1 into the machine tool spindle Visually centralise the probe 1 relative to the shank 4 and partially tighten cone point grubscrews 3 to 2 3Nm 1 47 2 2 Ibf ft Gradually and systematically tighten the four flat point grubscrews 2 backing off after each movement until the stylus run out is less than 20um Fully tighten cone point grubscrews 3 to 6 8Nm 4 4 5 9Ibf ft Continue adjustment using the four flat point grubscrews 2 This is achieved by using each in opposition to the other in order to move the probe first slackening one then tightening the other Using two 2 5mm Allen keys if required progressively tighten
107. lly designed for the harshest of machine tool environments Integral to Renishaw s continuous commitment to technological innovation the MP700 Probe System has been developed to provide Improved repeatability in all probing directions A low triggering force combined with low pre travel variation to provide high accuracy even when used with long styli A proven ten fold improvement in life ten million triggers Faster and more accurate measurement The elimination of reseat failures In addition to providing high accuracy measurement on your machine tool the MP700 Probe System also offers A non lobing design that is not direction dependent thus greatly simplifying probe calibration routines associated with workpiece setup and inspection cycles High resistance to machine tool vibration A 360 Optical turn on facility allowing the probe to be turned on reset in any position Resistance to shock and false triggering through the use of digital multi channel filtering Full compatibility with Renishaw s industry proven Optical Transmission Systems Viton diaphragms and O rings that provide unparalleled protection against all commonly used coolants RENISHAW Before You Begin 15 MP700 A System Overview There are two types of MP700 Probe System The Optical Machine Interface variant The Optical Machine Module MI12 Machine Interface variant The MP700 Probe System Optical Machine Interface Va
108. ment plate and optional centre ball which allows the probe to pivot on the shank and slide across the shank end face Stylus alignment need only be approximate except in the following circumstances e Where alignment must be as exact as possible due to the use of probe vector software e Where the probe must be parallel to the spindle axis to prevent the stylus stem contacting the workpiece when gauging deep holes e Where the machine s control software is unable to compensate for the offset of the stylus C S Adjustment Plate with Centre Ball Figure 5 3 Stylus On centre Adjustment Methods RENISHAW Maintenance And Adjustment 5 9 Stylus On centre Adjustment Using the Adjusting Plate Refer to Figure 5 4 1 Where necessary install the probe 1 into the machine tool spindle 2 Visually centralise the probe 1 relative to the shank 4 and partially tighten cone point grubscrews 3 to 2 3Nm 1 47 2 2 Ibf ft 3 Gradually and systematically tighten the four flat point grubscrews 2 backing off after each movement until the stylus run out is less than 20um 4 Fully tighten cone point grubscrews 3 to 6 8Nm 4 4 5 9Ibf ft 5 Continue adjustment using the four flat point grubscrews 2 This is achieved by using each in opposition to the other in order to move the probe first slackening one then tightening the other Using two 2 5mm Allen keys if required
109. minals 14 amp 15 23 amp 24 PROBE STATUS N O Normally Open N C Normally Closed Switch must be in position shown STATUS Switch can be in N O either position Bleeper on Bleeper off PROBE Factory set to STATUS Bleeper on Figure 2 17 Switch SW3 Settings RENISHAWE System Installation 2 29 Signal Strength Test Points The MI12 Machine Interface Unit incorporates the three signal strength test points detailed below refer to Figure 2 18 T1 OMM 2 Minimum receivable signal approximately 0 36V Maximum signal strength output approximately 7V dc T2 OMM 1 Signal strength levels same as T1 OMM 2 above also available at terminal 19 T3 OV Reference Fuses The MI12 Machine Interface Unit incorporates the following fuses refer to Figure 2 18 FS1 Spare 62mA Quick Blow fuse FS2 62mA Error FS3 62mA Low Battery FS4 62mA Probe Status N C FS5 250mA Audio Extension Protection FS6 62mA Probe Status N O FS7 500mA Anti surge 20mm Power Supply Protection RENISHAW 2 30 System Installation Figure 2 18 MI12 Machine Interface Unit Signal Test Point and Fuse Locations RENISHAWE System Installation 2 3
110. n and Output Configuration The OMI reception Rx and transmission Tx ranges see Figure 5 17 are set by the range selection switch SW1 The output configuration of the OMI is set by the output configuration switch SW2 Both switches are shown in Figure 5 15 To gain access to the range selection and output configuration switches it is first necessary to remove the window and label from the OMI body Removal of the Window and Label from the OMI CAUTION DO NOT ALLOW LIQUIDS OR SOLID PARTICLES TO ENTER THE OMI BODY NEVER REMOVE THE WINDOW 3 BY TWISTING OR ROTATING BY HAND ALWAYS USE THE JACKING SCREWS 2 Note The window 3 must only be removed for the following reasons e To change fuses To change the reception transmission range settings and output options To replace a broken window A bag of spare fuses is located behind the label Take care to ensure that it does not fall out Refer to Figure 5 14 1 Using a 2 5mm AF hexagon Allen Key remove the two short screws 1 and the two long screws 2 securing the window 3 to the OMI body 4 2 Insert the two long screws 2 into the two threaded holes A RENISHAWE 5 26 Maintenance And Adjustment 3 Alternately tighten the long screws 2 to evenly jack the window 3 from the OMI body 4 Gently remove the window from the OMI body 4 Release the label 6 from the OMI body by turning the two quick release screws 5 a 1 4 turn countercloc
111. n order that it is ready for the next M code start signal is 300mS Should the MP700 probe require resetting in the Optical On Optical Off mode then the method used is dependant upon the time elapsed from the initial M code start signal as follows Between 2 1 and 4 2 or 8 4 seconds dependant on the debounce setting of the probe a single M code start signal will reset the probe Any reset occurring within this period will conform to the timings stated for Optical On Timeout mode e At any time after the 4 2 or 8 4 seconds has elapsed a single M code start signal will switch the probe OFF A second M code start signal will be required to switch the probe ON Figure 4 6 shows the timing of these events RENISHAW System Operation 4 15 This M code turns the probe off This M code turns the The duration of this signal must probe on not exceed 190ms M Code Signal Interface Error Open Signal Closed Interface Open Probe Status Closed Orientation Probe Open occurs here Oms 322ms 418ms 1146ms The Probe will only switch off if the 364ms debounce period of 4 2 or 8 4 T seconds has elapsed An M code start signal during the debounce period 300ms minimum period will reset the probe as if it were set in required for system to recover Optical On Time Out mode Figure 4 6 Probe Reset Optical On Optical Off Selected RENISHAWE 4 16 System Operation Switching Off the Probe
112. nit 10 Release and remove the four footpads 11 from the base plate 9 Insert the four grommets 12 into the four footpad location holes within the base plate 9 Mount the base plate 9 between the two brackets 1 Mount the MI12 Machine Interface Unit 10 to the base plate 9 Slide the MI12 Machine Interface Unit forward to abut the bezel 6 Secure the MI12 Machine Interface Unit in position with the four washers 13 and the four screws 14 Mount the pre cut panel together with the assembled mounting kit and MI12 Machine Interface Unit to the machine tool RENISHAW System Installation 2 19 1 Bracket 2 Off 8 Nut 4 Off 2 Screw 4 Off 9 Base Plate 3 Washer 4 Off 10 MI12 Machine Interface Unit 4 Nut 4 Off 11 Foot Pad 4 Off 5 Gasket 12 Grommet 4 Off 6 Bezel 13 Washer 4 Off 7 Washer 4 Off 14 Screw 4 Off Figure 2 11 Panel Mounting the MI12 Machine Interface Unit RENISHAWj 2 20 System Installation Mounting Your PSU3 Power Supply Unit to Your Machine Tool It is recommended that the PSU3 Power Supply Unit see Figure 2 12 is mounted within the machine s electrical cabinet THIS EQUIPMENT MUST BE EARTHE NO USER SERVICEABLE PARTS INSIDE Cable Colour Code USA E Green Yellow Green RENISHAW POWER SUPPLY UNIT 1 PSU3 Power Supply Housin
113. nts Protection of the OMM Cable 2 5 Together Optical Machine Interface Variant 2 48 Setting Up Your Optical Machine Module 2 10 Connecting Your Optical Machine Interface Mounting the MI12 Machine Interface to Your PSU3 Power Supply Unit 2 48 Unit to the Machine Tool 2 16 Mounting Your PSU3 Power Supply Connecting Your System Components Unit to Your Machine Tool 2 20 To Your Machine Tool Optical Machine Interface Variant 2 50 Connecting Your System Components Outputs from the Optical Machine Together OMM MI12 Interface Variant 2 21 Interface ia E DERE dene 2 50 Connecting Your OMM MI12 Machine Connecting Your Optical Machine Interface Unit and PSU3 Power Supply Interface to Your Machine s CNC Unit Together eicere fne 2 22 Controller cress terere 2 62 Setting Up the Optical Machine Interface 2 63 a Connecting Your System Components To Your Machine Tool OMM MI12 Interface Variant 2 26 Installing Your MP700 Probe to Your Machine Tool All Systems 2 72 Connecting Your MI12 Machine Interface Unit to Your Machine Tool s CNC The Diaphragm Protection Cover 2 72 Controller and 24 Volt Power Supply 2 26 Mounting Your MP700 Probe to a Shank 2 73 Connecting Your P
114. o the OMI Cable Notes It is recommended that Bundy Tube 12mm diameter hydraulic pipe is used when protecting the OMI cable s with rigid conduit Use brass olive 4 when fitting rigid conduit to the conduit adapter When tightening or loosening gland nut 5 it is important to ensure that gland nut 1 is not inadvertently loosened To fit rigid conduit to the OMI cable see Figure 2 24 1 Cut rigid conduit to required length 2 Release and remove gland nut 5 from screwed adapter 2 Take care not to slacken gland nut 1 3 Remove gland nut 5 together with conduit termination piece and plastic olive from the OMI cable 3 see Figure 2 23 5 Remove brass olive 4 from its plastic bag and assemble over OMI cable 3 6 Re assemble gland nut 5 to OMI cable 3 T Pass the OMI cable 3 through the rigid conduit 6 8 Locate end of rigid conduit 6 into screwed adapter 2 9 Assemble gland nut 5 to screwed adapter 2 and torque tighten to between 25 and 27Nm 18 55 and 19 91 Ibf ft This action will provide a seal between the rigid conduit and the conduit adapter conforming to BS 5490 IEC 529 IP67 RENISHAWE System Installation 2 47 1 Gland Nut 5 Plastic Olive 2 Screwed Adapter 6 Gland Nut 3 OMI Cable 7 Flexible Conduit 4 Conduit Termination Piece Figure 2 23 Fitting Flexible Conduit to the OMI Cable 1 Gland Nut 4 Brass Olive 2 Screwed Adapter 5 Gland Nut 3
115. od RENISHAWj 5 12 Maintenance And Adjustment Probe Head Removal and Switch Settings CAUTION ONLY FULLY QUALIFIED TECHNICIANS SHOULD RESET THE PROBE HEAD AND OPTICAL MODULE PROBE SWITCH SETTINGS Note The probe head must only be removed to gain access to the probe head and optical module probe switches Removing the Probe Head Refer to Figure 5 6 1 Unscrew probe head cover 1 counterclockwise and remove from probe head 2 2 Release and remove the three retaining capscrews 3 together with the three star washers 4 CAUTION DO NOT TWIST THE PROBE HEAD FROM THE OPTICAL MODULE PROBE OTHERWISE DAMAGE CAN RESULT 3 Gradually tighten the two grubscrews 5 to jack the probe head from the optical module probe Accessing the Probe Head Switch Refer to Figure 5 6 To gain access to the probe head switch 7 peel back the probe rear seal 6 by squeezing it as shown in View A RENISHAWE Maintenance And Adjustment 5 13 1 Probe Head Cover 6 Probe Rear Seal 2 Probe Head 7 Probe Head Switch 3 Retaining Screw 3 Off 8 O Ring 4 Star Washer 3 Off 5 Grubscrew 2 Off Figure 5 6 Probe Head Removal and Assembly 5 5 14 Maintenance And Adjustment Adjusting the Probe Head Switch CAUTIONS DO NOT TOUCH ELECTRICAL COMPONENTS WHEN ADJUSTING SWITCH SETTINGS KEEP ALL COMPONENTS CLEAN DO NOT ALLOW THEM TO BECOME CONTAMINATED WITH MACHINING RESIDUE OR
116. ol input This option must not be used with the MP700 Probe RENISHAW System Operation 4 3 AUTO START 85 MACHINE START OMM 2 Special OMM 2 CN d 20 Standard ee OMM1 OMM ies Figure 4 1 M112 Machine Interface Unit Printed Circuit Board 5 4 4 System Operation Probe Switch On Optical On Time Out or Optical On Optical Off Mode Selected It is recommended that the probe is switched on by using the pre set Machine Start method When this method is used the following will occur A machine controlled M code will be transmitted by way of the MI12 Interface Unit to the OMM OMP The ERROR LED on the front panel of the 12 Machine Interface Unit will extinguish typically 0 3 seconds to indicate that the OMM has transmitted the signal to the OMP The PROBE STATUS LED on the front panel of the MI12 Machine Interface Unit will illuminate typically 236 to 825 milliseconds after the interface error has cleared dependent on vibration This indicates that the kinematic location is seated PROBE CLOSED e The OMP on receipt of the infra red signal transmitted by the OMM will s
117. oose the type of support that will best suit your needs Outside the United Kingdom contact the Product Support Department of the Renishaw Group company that best serves your area For information about Renishaw s subsidiary offices see Product Support World wide later in this section Product Support World wide If you have a question about the MP700 Probe System first consult the documentation and other printed information included with your product If you cannot find a solution you can receive information on how to obtain product support by contacting the Renishaw subsidiary company that best serves your country RENISHAWE Before You Begin 11 Product Support Within the United Kingdom and Republic of Ireland For Product Support Services within the United Kingdom and Republic of Ireland please contact the following Product Support Department Metrology Division Renishaw Plc New Mills Wotton under Edge Gloucestershire England GL12 8JR Tel 44 01453 524524 Fax 44 01453 524901 Calling a Renishaw Subsidiary Office When you call it will help the Renishaw support staff if you have the appropriate product documentation at hand Please be prepared to give the following information as applicable The type of product that you are using e The type of hardware that you are using including all serial numbers e An account of what happened and what you were doing when the problem occurred An a
118. ough the flexible conduit 7 5 Screw the conduit termination piece 4 into the end of the flexible conduit 7 6 Push the flexible conduit 7 upwards until conduit termination piece 4 locates within screwed adapter 2 7 Ensuring the flexible conduit 7 is fully located through plastic olive 5 assemble gland nut 6 to screwed adapter 2 and hand tighten to retain conduit in place Note When tightening gland nut 6 it is important to ensure that gland nut 1 is not inadvertently loosened 8 Ensuring gland nut 1 is not inadvertently slackened tighten gland nut 6 an additional 1 to 272 turns This action will form a seal between the flexible conduit and the screwed adapter that conforms to BS 5490 IEC 529 IP67 RENISHAW System Installation 2 7 1 Gland Nut 5 Plastic Olive 2 Screwed Adapter 6 Gland Nut 3 OMM Cable 7 Flexible Conduit 4 Conduit Termination Piece Figure 2 4 Fitting Flexible Conduit to the OMM Cable 5 2 8 System Installation Fitting Rigid Conduit to the OMM Cable Notes It is recommended that Bundy Tube 12mm diameter hydraulic pipe is used when protecting the OMM cable with rigid conduit Use brass olive 4 when fitting rigid conduit to the conduit adapter When loosening gland nut 5 it is important to ensure that gland nut 1 is not inadvertently loosened To fit rigid conduit to the OMM cable see Figure 2 5 1
119. ration During an inspection cycle when the stylus contacts the workpiece at a force of 2gf 0 02N or above the stylus deflects to transmit a strain through the kinematic location to the strain gauges This strain causes a resultant change in gauge resistance that is detected by the ASIC Once the trigger threshold has been reached the output signal is delayed for 8 milliseconds before finally being outputted to the CNC controller through the optical transmission system Refer to Figure 4 3 As the probe will continue to move dependent on machine speed and CNC update time the kinematic location continues to unseat until the CNC controller issues a stop signal and records the probe position When the probe subsequently reverses clear of the workpiece the kinematic location will reseat to within 0 1um of its original position The probe will indicate a seated condition 1 millisecond after any stylus vibration has decayed to a value below the vibration threshold Thus reducing the probe output delay to a value below 8 milliseconds will make the probe increasingly susceptible to triggers resulting from rapid traverse moves or machine vibration RENISHAW System Operation PROBE TRIGGERS Activated 8ms after e strain gauge reaches the trigger threshold Activated when the vibration stays within the trigger threshold 4 9 Trigger delay Strain gauge time 8ms output 12ms MAX 3ms TYPICAL Trigger thr
120. riant Connecting the MI12 Machine Interface Unit to the Machine Tool s CNC Controller and 24 Volt Power Supply 12 Machine Interface Unit Outputs There are four Solid State Relay SSR outputs comprising two probe complementary outputs an error output and a low battery output Each output has a maximum current of 40mA peak and a maximum voltage of 50V peak The output waveforms of the MI12 Machine Interface Unit are shown in Figure 2 15 below Each SSR is protected from overload by a 62mA fuse In addition an output is also provided for a remote audible indicator or lamp that can be located near the machine tool operator This output will sink 100mA and should have no more than 50V dc applied to it The output will remain active for 44ms after each probe change of state MI 12 OUTPUTS Probe Seated Triggered Seated Error Probe Power Switch Probe Probe eg Error Low Switch Solid f On L1 Trigger Reseat Beam cut Clear Battery Off State Relay Y Y Y Y Y Y fi pu Yet ally Open The output signals from the interface must be compatible with the machine control input Figure 2 15 MI12 Machine Interface Unit Output Waveforms RENISHAWE System Installation 2 27 Switch Settings The MI12 Machine Interface Unit incorporates the following switches see Figure 2 16 it is important that where necessary each of these switches are set to suit your specific application Switch SW1
121. riant The system comprises see Figure 1 e A Renishaw amp MP700 Spindle Probe e A Renishaw Optical Machine Interface OMI optional alternative to the MI12 Machine Interface Unit and Optical Machine Module e A Renishaw PSU3 Power Supply Unit Optional PSUS Power Supply Unit RENISHAW c Y CNC Stylus Machine Control 7 Q O NA Figure 1 MP700 Probe System Optical Machine Interface Variant RENISHAWE 16 Before You Begin The MP700 Probe For information on your MP700 Probe refer to The MP700 Probe System Optical Machine Module Variant later in this chapter The PSU3 Power Supply Unit For information on your PSU3 Power Supply Unit refer to The MP700 Probe System Optical Machine Module Variant later in this chapter The Optical Machine Interface OMI The OMI see Figure 2 is a combined optical receiver and machine interface It is an optional alternative to the more traditional OMM and MI12 Machine Interface Unit see The MP700 Probe System Optical Machine Module Variant later in this chapter For specific information on the OMI refer to Chapter 3 System Description Additional information on the OMI may be obtained by reading the Optical Machine Interface PSU3 Power Supply Installation and User s Guide Publication No H 2000 5062 LOW PROBE ERROR BAT STATUS Figure 2 The Optical Machine Interface RENISHAW Before You Begin 17
122. ry 11 Shank 5 Retaining Screw 12 Cone Point Grubscrew 2 Off 6 Cover 13 Cover Seal 7 Centre Ball Figure 2 44 Stylus On centre Adjustment Centre Ball Method RENISHAWj 2 82 System Installation Adjusting Your MP700 Probe System The component parts of the MP700 Probe System include switches that allow you to select the parameters within which you wish your system to operate These include The way in which you wish the 700 Probe to switch on and off e The debounce period The reception and transmission ranges of the OMM and OMI The vibration resistance of the probe Although these switches will have been set during the initial installation of the MP700 Probe System onto your machine tool subsequent adjustment may be required in circumstances where installation was performed off site or where subsequent installation of probing systems on adjacent machine tools has caused interference to your existing system For information on how to adjust any of the switch settings refer to Chapter 5 Maintenance and Adjustment RENISHAWE System Description 3 1 CHAPTER 3 System Description Reading this chapter will provide you with a detailed knowledge of the MP700 Probe system It includes e A detailed description of each of your system components e A detailed description of how the system components interact e Technical data on the MP700 Probe System Contained In This Chapter Descrip
123. s associated with touch trigger probes fall into two main categories these are e Random errors Systematic errors which are generally application sensitive and can be eliminated or minimised in practice Fixed Error Sources There is only one error source associated with touch trigger probes which must be assumed to be present in all measurements taken It is known as undirectional repeatability and refers to the ability of the probe to trigger at the same point each and every time Quoted statistically as having a 95 confidence level the undirectional repeatability error of resistive touch trigger probes is extremely small typically less than 0 2um Thus whilst it unlikely to be a major source of error its presence must always be considered when assessing the measuring performance of a machine tool or probe system It is also important to remember that the use of very long or complex styli or high trigger forces will slightly increase any probe repeatability error RENISHAWE 1 12 Fundamentals Stylus 50mm Pretravel Variation 0 08um Each division 0 2um Typical Pre travel Variation Chart MP700 Touch Trigger Probe Figurel1 2 Probe Pre travel Variation Typical Systematic Error Sources There are two types of systematic error These are known as Pre travel variation see Figure 1 2 which results from the three point Kinematic location exhibiting a variation in trigger force dependent on trig
124. ses To change the reception transmission range settings and output options To replace a broken window A bag of spare fuses is located behind the label Take care to ensure that it does not fall out Refer to Figure 2 35 1 Using a 2 5mm AF hexagon Allen Key remove the two short screws 1 and the two long screws 2 securing the window 3 to the OMI body 4 2 Insert the two long screws 2 into the two threaded holes A 3 Alternately tighten the long screws 2 to evenly jack the window 3 from the OMI body 4 Gently remove the window from the OMI body 4 Release the label 6 from the OMI body by turning the two quick release screws 5 a 1 4 turn counterclockwise Carefully lift the label from the OMI body to gain access to the OMI switches and terminal block see Figure 2 37 RENISHAWE 2 64 System Installation Switch Settings The Optical Machine Interface Unit incorporates the following switches see Figure 2 36 it is important that where necessary each of these switches are set to suit your specific application Switch SW1 CAUTION ALTHOUGH SWITCH SW1 ACTS PRIMARILY AS A RANGE SELECTOR IT ALSO ALLOWS YOU TO SELECT THE WAY IN WHICH THE PROBE IS SWITCHED ON THE MP700 PROBE MUST ONLY EVER BE SWITCHED ON USING A MACHINE START SIGNAL THE AUTO START SETTING MUST NEVER BE USED Switch SW1 is supplied factory set as shown in Figure 2 36 i e to MACHINE START with both
125. settings shown in Figure 5 15 RENISHAW Maintenance And Adjustment 5 27 SW 1 Screw short 2 Off 4 OMI Body 2 Screw long 2 Off 5 Retaining Screw 3 Window 6 Label Figure 5 14 Removal of the OMI Window and Label O M I SWITCH SW2 Output Configuration Factory setting shown O M I SWITCH SW1 Output Configuration Factory setting shown Xd Iu Probe Status Normally High Low Battery Normally Low Error Normally High Skip Normally Low Machine Start Rx Reception 100 Tx Transmission 100 Tx AUTO Sw1 100 START PROBE SKIP LOW BAT ERROR STATUS Rx Tx MACHINE PROBE SKIP LOW BAT ERROR 100 50 START STATUS H PROBE STATUS i Seated o H PROBE STATUS Seated L Figure 5 15 Range Selection Switch SW1 and Configuration Switch SW2 5 5 28 Maintenance And Adjustment Optical Machine Interface Output Signals and Waveforms The output signals and waveforms of the Optical Machine Interface are shown in Figure 5 16 and can be adjusted by altering the settings of switch SW2 When adjusting switch SW2 it is important to ensure that the output signals from the OMI are compatible with the machine control input Signal Delays Transmission Delay probe trigger to output change of state 144uS Start Delay initiation of start signal to valid signal transmission 410 ms RENISHAWE
126. sher 7 and grommet 6 to the cable 12 RENISHAW 2 32 System Installation Note If you are using multiple cables to connect the MI12 Machine Interface Unit to the machine s CNC controller use the gland connector immediately next to that used to connect the PSU3 Power Supply Unit for the cable you wish to connect to terminal block 9 Use the gland connector immediately next to that used for the OMM cable for the cable you wish to connect to terminal block 11 4 Insert cable 12 through the gland connector 5 Note Wiring instructions for connecting the cable s to terminal blocks 9 and 11 of the MI12 Machine Interface Unit are shown diagrammatically on the underside of the top cover 2 For installation purposes the cable is diagrammatically referred to as Control OP see Figure 2 13 5 Connect cable 12 to terminal blocks 9 and 11 as required in accordance with the wiring diagram provided on the underside of the top cover 2 see also Figure 2 13 6 Slide the grommet 6 and fibre washer 7 along cable 12 until the grommet abuts the gland connector 5 7 Assemble the gland nut 4 to the gland connector 5 tighten the gland nut gently until the grommet 6 seals against the cable 12 RENISHAWE System Installation 2 33 Connecting the MI12 Machine Interface Unit to the Machine Tool s Power Supply Where applicable connect the MI12 Machine Interface Unit to your machine
127. stallation This is necessary to allow for poor probe location in the spindle following a tool change spindle orientation repeatability and hunting of the spindle orientation if not mechanically clamped Stylus ball centre to spindle centre line relationship can be compensated for by suitable calibration of a known feature To relate the actual location of the workpiece surface to the machine tool s reference frame it is necessary to datum your MP700 probe This will allow you to Determine the position of the stylus ball centreline relative to the machine spindle centreline Determine the effective size of the stylus ball electronic ball radius Prior to datuming you will need to establish the optimum length and diameter of the stylus to be used Refer to Selecting The Correct Stylus later in this chapter RENISHAWE Fundamentals 1 5 To datum your MP700 probe Note Prior to datuming the probe on the machine tool time can be saved by centralising the stylus to the shank by use of a tool presetter For instructions on how to perform stylus on centre adjustment refer to Chapter 5 Maintenance and Adjustment 1 Assemble the probe to its shank 2 Assemble the chosen stylus to the probe 3 If available mount the probe to a tool presetter and perform stylus on centre adjustment in accordance with Chapter 5 Maintenance and Adjustment to achieve the best possible reading 4 Insert the probe wi
128. te about the axis with the probe vertical To avoid the probe from going OPEN when it is horizontal and rotated about its own axis e g spindle indexing on a horizontal axis machine do not exceed the rates given below for the stylus in use Probe Axis gue Stylus Max Rate RPM 50mm 1 96 in Ceramic 100mm 3 93 in Ceramic 100mm 3 93 in Carbon Fibre 150mm 5 89 in Carbon Fibre 200mm 7 87 in Carbon Fibre 5 3 24 System Description Probe Specification Continued Battery Specifications Battery Capacity mAh Recommended Battery or Equivalent Zinc Alkaline Ever Ready PP3 P I E C 6F22 230mAh qu Duracell MN1604 6LR61 E 550mAh Battery Life Expectancy Hours CONTINUOUS LIFE STANDBY 5 USAGE LIFE 72 min day Days Optical Switch Optical On Optical Optical On On Off Timer Off On Off Timer Off Alkaline Duracell 26hrs 29hrs 24hrs 26hrs 382 509 20 23 19 2 MN 1604 Days Days Days Days Days Days Ni Cad The use of Nickel Cadmium rechargeable batteries is not recommended Their low capacity will give an unacceptably low life The typical elapsed time between the MI12 Machine Interface Unit s Low Batt LED illuminating and the battery becoming fully discharged is 1 hour It is recommended that the battery is removed from the OMP if the probe is to be left unused or stored for a period exceeding 6 months RENISHAW System Description 3 25 OMP OM
129. te for known errors to produce true results As each MP700 Probe System is unique it is imperative to datum your probe if e It is the first time your Renishaw spindle probe system is to be used e Whenever a new replacement stylus is fitted to your spindle probe e It is suspected that the stylus has become distorted or that the probe has crashed e Accuracy demands that you periodically datum to compensate for thermal growth of your machine tool e The repeatability of relocation of the probe shank is poor in which case datuming may be required each time the probe is selected For detailed information on how to datum the MP700 Probe refer to Chapter 1 Fundamentals RENISHAW Fundamentals 1 1 CHAPTER 1 Fundamentals By reading this chapter you will gain the knowledge that is fundamental to getting the best performance from your MP700 Probe System Contained In This Chapter Workpiece Setup 1 2 Strain Gauge Technology Touch Trigger Probes 1 10 Probe Datuming General 1 2 a Touch Trigger Probes Probe Datuming MP700 Probe 1 5 Performance Characteristics 1 11 Workpiece Inspection 1 6 H Probe Pre travel 1 11 Selecting The Correct Stylus
130. th methods RENISHAW System Installation 2 45 Fitting Flexible Conduit to the OMI Cable Notes It is recommended that Thomas and Bretts 1 4 in 11mm diameter SHURESEAL Part Number TBEF 0250 50 or equivalent is used when protecting the OMI cable s with flexible conduit Use plastic olive 5 when fitting flexible conduit to the conduit adapter When tightening or loosening gland nut 6 it is important to ensure that gland nut 1 is not inadvertently loosened To fit flexible conduit to the OMI cable see Figure 2 23 1 Cut flexible conduit 7 to required length 2 Release and remove gland nut 6 from screwed adapter 2 Take care not to slacken gland nut 1 3 Remove gland nut 6 from the OMI cable 3 4 Carefully thread the OMI cable 3 through the flexible conduit 7 5 Screw the conduit termination piece 4 into end of the flexible conduit 6 Push conduit upwards until conduit termination piece 4 locates within screwed adapter 2 7 Ensuring the conduit is fully located through plastic olive 5 assemble gland nut 6 to screwed adapter 2 and hand tighten to retain conduit in place 8 Ensuring gland nut 1 is not inadvertently slackened tighten gland nut 6 an additional 172 to 2 turns This action will form a seal between the flexible conduit and the screwed adapter that conforms to BS 5490 IEC 529 IP67 RENISHAW EA 2 46 System Installation Fitting Rigid Conduit t
131. the four grubscrews as the final setting is approached When the final setting is achieved bum 0 0002 in total stylus run out or better ensure that the four flat point grubscrews 2 are fully tightened to 1 5 3 5Nm 1 1 2 6lbf ft RENISHAW System Installation 2 79 3 _ 1 700 2 Flat Point Grubscrew 4 Off 3 Cone Point Grubscrew 2 Off 4 Shank Figure 2 43 Stylus On centre Adjustment Adjustment Plate Method RENISHAWE 2 80 System Installation Stylus On centre Adjustment Using The Centre Ball CAUTION DURING ADJUSTMENT CARE MUST BE TAKEN NOT TO ROTATE THE PROBE RELATIVE TO THE SHANK DO NOT HIT OR TAP THE PROBE DURING THE FOLLOWING PROCEDURE Note For applications where the stylus stem has to be parallel with the spindle centre line this centre ball method must be used Refer to Figure 2 44 1 Where necessary release the two capscrews 1 Remove the battery cover 2 Disconnect and remove the battery 4 Release and remove retaining screw 5 Remove cover 6 2 Visually centralise the probe relative to the shank 11 partially tighten cone point grubscrews 12 to 2 3Nm 1 47 2 2 Ibf ft 3 Where necessary install the probe into the machine tool spindle 4 Visually check the alignment of the stylus if adjustment is required realign stylus by capscrews 9 5 Tighten capscrews 9 to as near 5 1Nm 3 76 Ibf ft as possibl
132. thin the spindle of your machine tool 5 Position the stylus of a dial test indicator DTI verdict clock or linear variable differential transducer LVDT against the probe stylus ball and set to zero 6 Rotate the machine spindle and observe reading T If required carry out final stylus on centre adjustment in accordance with Chapter 5 Maintenance and Adjustment to achieve a total stylus run out of 5um 0 0002in or better 8 Perform a probe length calibration cycle in accordance with the manufacturer s instructions supplied with your calibration software 9 Perform a stylus X Y offset calibration cycle in accordance with the manufacturer s instructions supplied with your calibration software 10 Perform a stylus ball calibration cycle in accordance with the manufacturer s instructions supplied with your calibration software RENISHAW 1 6 Fundamentals Workpiece Inspection Selecting The Correct Stylus Note Choosing the best stylus for a given application is critical in order to achieve optimum probe performance Although cranked styli may be used without a detrimental effect on the measuring performance of the MP700 probe poor location of the probe shank within the machine spindle spindle orientation repeatability and or hunting of the spindle orientation may result in a significant degradation in the probe s performance The range of styli suitable for use with the MP700 probe includ
133. ting if the rates given in Probe Orientation earlier in this chapter are exceeded The probe may be rotated when vertically mounted without the need to reset The Battery Whenever the MP700 Probe System indicates that battery power is low renew the battery as soon as possible In instances where the probe has remained inactive for a long period of time and the probe fails to switch on renew the battery as a matter of course Prior to renewing the battery always ensure that all machining residue and coolant have been removed from the probe Probe Calibration It is recommended that calibration datuming of the MP700 Probe is performed using a calibration sphere Dependent on the system accuracy you require and the degree of tolerance to which you wish to machine a single calibration radius may be used RENISHAWE 4 20 System Operation Programming Techniques Ensure that the probing speed is exactly the same as the speed used to calibrate the probe Ensure a minimum speed of 15mm min is observed during all inspection cycles Ensure that the probe remains on the component surface for no more than 30 seconds Ensure that all inspection moves occur outside the machine tool s acceleration and deceleration zones e A maximum of three triggers per second can be achieved e When using existing measurement cycles ensure that these are updated to account for any system time delays e Best accuracy
134. tion of the MP700 Optical Module Machine OMM 3 11 Probe System 3 2 a The MI12 Machine Interface Unit 3 13 a Standard Systems 3 2 The PSU3 Power Supply Unit 3 15 Systems Fitted With Optical Machine Interface 3 2 Optical Machine Interface OMI 3 16 a The MP700 Machine Spindle a Technical Data 3 19 Pr REDE 3 4 Probe Specification 3 19 a The Probe He ad 3 6 OMP OMM Specification 3 24 Stylus On centre Adjustment Plate zio 3 8 OMP OMM Specification 3 25 m The Optical Module Probe OMP 3 8 L Screw Torque Values 3 26 RENISHAW 3 2 System Description Description Of The MP700 Probe System Systems Fitted With Optical Machine Module MI12 Machine Interface Unit Typically as Renishaw designs its systems to meet the individual needs of each customer your MP700 Probe System see Figure 3 1 will comprise of tailored variations of the following each of them geared specifically to meet your needs e A Renishaw amp MP700 Spindle Probe e A Renishaw Optical Machine Module OMM Renishaw
135. tting any panel make sure that you have the MI12 panel mounting kit Part Number A 2033 0690 1 Release and remove the panel into which you wish to mount the MI12 Machine Interface Unit 2 Cut drill and countersink the panel to which you wish to mount the MI12 Machine Interface Unit to the dimensions shown in Figure 2 10 A 2 64 12 SWG 1 0 04 ug p o 45 i hl d 28 5 0 33 27 0 27 85 0 19 24 0 16 B B Y uu 8 88 o si gu 8 5 0 33 4 gt 4 S B 135 5 31 B co 76 2 99 152 5 98 Figure 2 10 MI12 Machine Interface Unit Panel Mounting Dimensions 5 2 18 System Installation Panel Mounting the MI12 Machine Interface Unit Refer to Figure 2 11 1 Obtain an MI12 panel mounting kit Part Number A 2033 0690 Where necessary this may be ordered through your nearest Renishaw company or distributor 2 Assemble the panel mounting kit to the MI12 Machine Interface Unit as follows refer to Figure 2 11 a Assemble the two brackets 1 to the pre cut panel and secure with the four screws 2 the four washers 3 and the four nuts 4 Remove the protective paper from the gasket 5 and assemble the gasket to the bezel 6 Assemble the bezel 6 to the pre cut panel and secure with the four washers 7 and the four nuts 8 Release and remove the base plate 9 from the MI12 Machine Interface U
136. uce the effective range This in turn will reduce the unit s susceptibility to noise Adjust the range selection switch to the setting shown in Figure 2 38 to increase or decrease the Reception Rx and Transmission Tx ranges to the percentage you require RENISHAW System Installation 2 69 Rx 25 Tx 50 Rx 50 Tx 50 100 100 Range Selection Rx Reception Range Tx Transmission Range Switch SW1 Tx AUTO 100 START Reception Transmission Range Range 100 Off Off 100 On t 50 Off 50 Off 25 Off On 50 Off 1 2 3 tart Rx Tx MACHINE 100 50 START Figure 2 38 OMI Reception and Transmission Ranges RENISHAW 2 70 System Installation Replacement of the OMI Label and Window Refer to Figure 2 39 1 Refer to View A and assemble the label 1 and secure with the two quick release screws 2 Rotate screws a quarter turn clockwise to hold label in place Visually examine the OMI body 3 for damage or scratching to the O ring location groove as shown in View A Visually examine the window 4 and O ring 5 for cleanliness as shown in View B Also ensure that both the window and O ring are undamaged Refer to View C and insert the two short screws 6 into the two threaded holes
137. uch as the MP700 measure the amount of pre travel to ensure that triggering Occurs prior to any breaking of the Kinematic location Occurs with a virtually constant degree of pre travel regardless of probing direction Repeatability is also improved in this type of probe resulting in an overall improvement in measurement accuracy approaching a factor of five when compared to standard touch trigger probes For specific information on the MP700 Probe refer to Chapter 3 System Description RENISHAWE Fundamentals 1 11 Touch Trigger Probes Performance Characteristics Probe Pre Travel Triggering does not only occur when the Kinematic location actually breaks but also when microscopic movement of the contacts is induced by just a few microns of stylus deflection It is this distance travelled by the probe between the point at which the stylus touches a surface and a trigger actually occurring that is referred to as pre travel In strain gauge technology touch trigger probes such as the MP700 the strain gauges trigger the probe prior to the kinematics breaking Consequently the force required to cause a trigger as well as that required to induce probe pre travel is the same in all directions Probe pre travel is not generally regarded as a source of error and is typically accommodated and compensated for during probe datuming procedures Potential Error Sources The potential error source
138. ue sphere The above results are based on an MP700 Probe with the probe head delay switch set to zero delay whilst mounted on a dedicated test rig The results that you will encounter on a machine tool will differ due to The speed variation of the machine tool during any time delay typically less than 0 1 The variation in the machine tool s update time The repeatability and positioning accuracy of the machine tool The variation in machine scale resolution RENISHAWE 3 22 System Description Probe Specification Continued Probe Orientation Rotation About An Independent Axis e g Moving Head Machines To avoid the probe going OPEN during probe orientation Such as on a 5 axis moving head machine do not exceed the rates given below for the stylus in use The rates given apply at a radius of 141mm and from the probe stylus location face to the axis of rotation Stylus Rate Min Length Material 50mm 1 96 in Ceramic 100mm 3 93 in Ceramic 100mm 3 93 in Carbon Fibre 150mm 5 89 in Carbon Fibre 200mm 7 87 in Carbon Fibre Note The above table takes no account of spindle rotation during probe orientation RENISHAWE System Description 3 23 Probe Specification Continued Probe Orientation Continued Rotation About the Probe Axis Spindle Indexing Note The following recommendations apply only when the probe is horizontal There are no restrictions on the orientation ra
139. undamentals e After issuing an M start reset code always allow 1 1 seconds of dwell before monitoring the probe s output When operating the probe system a horizontal spindle machine always provide a reset signal after the spindle has been orientated to zero the system This will clear any errors caused by spindle and probe orientation When operating the probe system with vertical horizontal spindle heads always provide a reset signal after indexing the head This will clear any errors caused by spindle and probe orientation When orientating the probe system 5 axis moving head machine reduce the rate of orientation to avoid the probe from going open Alternatively disable the probe monitoring facility during all probe orientation moves RENISHAWE Fundamentals 1 9 How A Probe Works The Kinematic Location The Kinematic location see Figure 1 1 introduced by Renishaw in 1975 is a mechanical device that maintains the probe mechanism in an exact but flexible position Its purpose is to ensure that the stylus 4 always returns to the same position Typically a Kinematic location consists of a pivotal plate 1 which seats across three bearing points 2 and is held in position by a helical compression spring 3 Each bearing point formed by a combination of cylinders and spheres acts in the following manner In conventional touch trigger probes each bearing point also acts as an electrica
140. uts the gland connector 5 T Assemble the gland nut 4 to the gland connector 5 tighten the gland nut gently until the grommet 6 seals against the OMM cable RENISHAW System Installation 2 23 24V OV 13 p POWERIN CONTROL O P OMM 2 OMM 1 A FE ees eee ek ee mh imo zE LE oR ONS 6 r 9 lt M 15318 AO TWNOIS A TWNOIS M 15315 A9 5 WNOIS N Na N z o m o of olle M0739 SV 135 38 EMS Z M0734 SV 135 38 GINOHS ZMS L Y3SN NI Q3NIJ3Q SV SNOILVYNSDISNOD HOLIMS YSHLO LYVLS OLNY OIN OIN SNLWLS SNLYLS ZZ LZ NI LAVIS sr vv dio dio 1 Screw 4 off 9 Terminal Block 2 Top Cover 10 Wires from PSU3 Power 3 MI12 Machine Interface Unit Supply Unit or Machine Tool 24V supply 4 Gland Nut 4 off 11 Terminal Block 5 Gland Connector 4 off 12 Cable To CNC controller 6 Grommet 4 off 13 Terminal Block 7 Washer 4 off 14 PSUS Power Supply Unit 8 OMM Cable 15 Optical Machine Module Figure 2 14 Connecting the Optical Machine Module PSU3 Power Supply Unit and the MI12 Machine Interface Unit Together RENISHAWj 2 24 System Installation Connecting the PSU3 Power Supply Unit to the MI12 Machine Interface Unit Refer to Figure 2 14 Where applicable connect the PSU3 Power Supply Unit to t
141. wer On Indicator Red LED 3 Probe Signal Indicator Green LED 2 Clear LED s 3 off 4 MI12 Signal Indicator Yellow LED Figure 3 6 The Optical Machine Module Vs Note OMM shown with Window and Label removed for clarity Figure 3 7 OMM Range Selection Switch RENISHAWE System Description 3 13 The MI12 Machine Interface Unit Note Further information on the MI12 Machine Interface Unit can be obtained from reading the MI12 Interface PSU3 Power Supply Installation and User s Guide H 2000 5073 The MI12 Machine Interface Unit includes the following LED s refer to Figure 3 8 Purpose ERROR Red Lit when the optical beam is obstructed or the probe is off LOW BATT Red Lit when battery needs replacing PROBE STATUS Red Lit when the probe is seated Off when the stylus is deflected or when a probe error occurs POWER Red Lit when the power supply is active The MI12 Machine Interface Unit also includes A START button 5 which can be pressed to send a start signal to the OMP An audible indicator that sounds whenever the MP700 Probe triggers The MI12 Machine Interface Unit typically draws its power supply from your CNC machine tool 15V to 30V dc Alternatively power may be supplied via a Renishaw PSU3 Power Supply Unit RENISHAWE 3 14 System Description The MI12 Interface Unit supplies four solid state relay
142. will be achieved by minimising and spindle on centre errors RENISHAW Maintenance And Adjustment 5 1 CHAPTER 5 Maintenance and Adjustment This chapter provides step by step instructions to assist you in the setting up adjustment and subsequent maintenance of your MP700 Probe System Contained In This Chapter a Maintenance of the MP700 Machine Spindle Probe Diaphragm Removal Inspection Replacement and Renewal Removal and Inspection of the Outer Diaphragm a Inspection of the Inner Diaphragm Renewal Replacement of the Outer Diaphragm a Battery Installation Renewal E Stylus On centre Adjustment using the Adjustment Plate Stylus On centre Adjustment using the Centre Ball Probe Head Removal Switch Settings Removing the Probe Head a Accessing the Probe Head SWIIGIS 5 cac ct Motes eet a Adjusting the Probe Head Switch a Adjusting the Optical Module Probe Switch a Replacing the Probe Head Maintenance and Adjustment of the Optical Module Machine OMM Range Selection
143. witch Three receiving diodes 7 Six transmitting LED s 8 e Probe status LED 9 e Battery cover seal 10 e Battery cover 11 Battery 12 The OMP 6 which is battery powered and located between the probe head 2 and the shank is made active by the OMM OMI transmitting a start signal a burst of infra red modulated at 7 8125 kHz This start signal results from the receipt of an M code start reset signal sent by the MI12 Machine Interface Unit or the OMI Positioned within the line of sight of the OMM OMI the OMP receives machine control signals by way of three receiving diodes 1 Figure 3 5 providing a 360 envelope The OMP transmits signals back to the OMM OMI by way of six transmitting LED s 2 The OMP also offers a visual identification of both probe and battery status by way of the probe status LED 3 The probe status LED will Flash green to indicate a seated stylus Flash red to indicate a deflected stylus Probe Open Remain a constant red to indicate that the probe battery needs replacing Probe Open will be forced in this condition Continued on page 3 10 RENISHAW System Description 3 9 1 Receiving Diode 3 Off 2 Transmitting Diode 7 Off 3 Probe Status LED Figure 3 5 Optical Module Probe RENISHAWE 3 10 System Description The OMP receiver circuit allows the probe to operate in one of two modes e Stand by mode where the OMP transmitter
144. witch from standby to operational mode typically 0 6 seconds Figure 4 2 below shows the time taken between an M code start signal tO being sent to the probe and the probe becoming ready for use Low Open Closed Open Closed to 322ms 418ms 1146ms 364ms tO Time at which the M code was sent Figure 4 2 Probe Switch On Optical On Time out or Optical On Optical Off Mode RENISHAW System Operation 4 5 Switching on the Probe OMI Variant Probe Switch On Optical On Time Out or Optical On Optical Off Mode Selected Before operation the MP700 Probe must be made active by one of the following switch on options These options are user selectable and can be selected by adjustment of the SW1 switch located within the Optical Machine Interface OMI in accordance with Chapter 5 Maintenance and Adjustment Further information on the Optical Machine Interface may be obtained by reading the Optical Machine Interface PSU3 Power Supply Installation and User s Guide H 2000 5062 Machine Start where M code generated by the CNC controller passes through the OMI where it is converted to a pulse of infra red light recognisable to the OMP This option is factory pre set e Auto Start where an optical start signal is transmitted once every second and does not require a machine control input This option must not be used with the MP700 Probe It is recommended that the probe is switched on
145. wn as the m c ladder For specific information on the MI12 Machine Interface Unit refer to Chapter 3 System Description Additional Information on the MI12 Machine Interface Unit can be obtained by reading the MI12 Interface PSU3 Power Supply Installation and User s Guide Publication No H 2000 5073 Figure 6 The MI12 Machine Interface Unit The Power Supply Unit PSU3 The PSU3 Power Supply Unit see Figure 7 is installed in instances where a 24V power supply is not available from the machine tool s CNC controller For specific information on the PSU3 Power Supply Unit refer to Chapter 3 System Description Additional information on the PSU3 Power Supply Unit can be obtained by reading the PSU3 Power Supply Unit Installation and User s Guide Publication No H 2000 5057 H RENISHAW POWER SUPPLY UNIT PSU3 Figute 7 The PSU3 Powet Supply Unit RENISHAWA 22 Before You Begin Datuming Equipment Optional The datuming equipment supplied with your MP700 Probe System this will typically be a calibration sphere is the hardware used to datum calibrate your spindle probe following the selection of an automatic calibration program By running these datuming programs the position trigger characteristics and effective ball radius of your probe stylus in the X and Z directions can be determined These values can then be used in subsequent inspection programs to automatically compensa
146. x 100 Tx 100 Figure 5 11 OMM Reception and Transmission Ranges 5 5 22 Maintenance And Adjustment Replacement of the OMM Label and Window Refer to Figure 5 12 1 Refer to View A and assemble the label 1 and secure with the two quick release screws 2 Rotate screws a quarter turn clockwise to hold label in place Visually examine the OMM body 3 for damage or scratching to the O ring location groove as shown in View A Visually examine the window 4 and O ring 5 for cleanliness as shown in View B Also ensure that both the window and O ring are undamaged Refer to View C and insert the two short screws 6 into the two threaded holes A in the window 4 Tighten the two screws to 0 3 0 7Nm 0 22 0 51 Ibf ft Lightly smear the O ring 5 with silicone grease and assemble window 4 to OMM body 3 Insert the two long screws 7 into the two plain holes B Tighten each screw a few turns at a time to gradually pull the window 4 evenly against the OMM 3 There may be some resistance due to the compression of air trapped inside the OMM Alternatively tighten screws 7 to pull window 4 evenly into the body of the OMM Finally tighten screws to 1 0 1 8Nm 0 74 1 32 Ibf ft RENISHAW Maintenance And Adjustment 5 23 Inspect O ring location groove for damage Ensure that the window and O ring are cle

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