Renishaw OMI-2 Installation And User Manual
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Renishaw OMI-2 Installation And User Manual

Optical machine interface
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Installation and user's guide
H-2000-5233-03-A
OMI-2 - optical machine interface

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Summary of Contents for Renishaw OMI-2

  • Page 1 Installation and user’s guide H-2000-5233-03-A OMI-2 - optical machine interface...
  • Page 2 © 2005–2009 Renishaw plc. All rights reserved. Trademarks This document may not be copied or reproduced in RENISHAW® and the probe emblem used in the whole or in part, or transferred to any other media RENISHAW logo are registered trademarks of or language, by any means, without the prior written Renishaw plc in the UK and other countries.

  • Page 3: Table Of Contents

    Refitting the OMI-2 label . . . . . . . . . . . . . . . . . .21...

  • Page 4: Ec Declaration Of Conformity

    EC DECLARATION OF CONFORMITY Renishaw plc declares that the product: Name: OMI-2 Description: Optical machine interface has been manufactured in conformity with the following standard: BS EN 61326-1:2006 Electrical equipment for measurement, control and laboratory use – EMC requirements .

  • Page 5: Fcc Declaration (Usa)

    Renishaw cause harmful interference to radio communications . product documentation, and to ensure that adequate guards and safety interlocks are provided .
  • Page 6 60 °C (32 °F to 140 °F) ambient temperature OMI-2 with care . range . Do not apply labels to the front of the OMI-2 . Patent notice Changes to equipment Features of products shown in this guide, and of...

  • Page 7: Introduction

    ‘Modulated’ mode . Power supply The OMI-2 can draw its supply from the CNC machine’s 12 Vdc to 30 Vdc supply . Alternatively, power may be supplied from a Renishaw PSU3 16 (0 .63)

  • Page 8: Mounting Bracket

    . 45° 45 (1 .77) 90 (3 .54) 2 .0 The mounting bracket cannot (0 .08) be used with an OMI-2 in rear 3 pairs of holes Ø5 .3 (0 .20) permit OMI-2 exit configuration . mounting in alternative orientation...

  • Page 9: Omi-2 Visual Diagnostics

    . Magnetic label LED (red) – LOW BATTERY A summary of OMI-2 LED activity is provided on a magnetic label . The label may be placed on any When the OMP battery voltage falls below machine flat metal surface .
  • Page 10 OMI-2 visual diagnostics LED (green, red) – PROBE STATUS NOTE: If the ERROR SSR is activated This bi-colour LED is lit when the OMI-2 is because the blue or yellow condition causes powered . the loss of a good probe signal, or the violet Green –...

  • Page 11: Omi-2 Outputs

    OMI-2 outputs OMI-2 outputs Probe status 2a (5 V isolated driven skip) Load current = 50 mA max . There are five outputs: Output voltages Probe status 1 (SSR) Sourcing = 4 .5 V min at 10 mA . Probe status 2a (5 V isolated driven skip) = 2 .4 V min at 50 mA .
  • Page 12 . All outputs will be switched off . If this occurs, turn off the power supply and remove the source of the problem . Turning on the power supply will reset the OMI-2 .
  • Page 13 (green/yellow), or the red wire and the screen wire (green/yellow), or the red and black wires (power supply), as this could result in permanent damage to the OMI-2 and/or the customer’s power supply . The use of in-line fuses at the machine cabinet end is recommended to provide protection for the OMI-2 and cable .

  • Page 14: Omi-2 Output Waveforms

    OMI-2 output waveforms OMI-2 output waveforms Outputs can be inverted by switches – see page 14 . PROBE Triggered Seated Seated OMI-2 Probe Error Probe SSR/driven switch Probe Probe Error e .g . low switch outputs trigger reseat clear battery...
  • Page 15 OMI-2 output waveforms PROBE Triggered Seated Seated Probe Probe Error OMI-2 e .g . low switch switch Probe Probe Error SSR/driven signal trigger reseat clear battery outputs Power SSR open BATTERY SSR closed Normally open Output high PROBE STATUS 2a/2b...

  • Page 16: Switches Sw1, Sw2 And Start Input

    Level To gain access to the switches, CAUTION: Exercise caution when using remove the OMI-2 window error SSR in N/O mode, as a wiring fault could cause loss of error condition and therefore could result in a non-fail safe condition .

  • Page 17: Switch Sw2 Output Configuration

    Switch SW2 output configuration Switch SW2 output configuration Auto start ‘Auto start’ selection causes the system to send Factory settings shown are for: a START signal at one second intervals, and A-5191-0049 should only be used when there is no available A-5191-0050 output from the machine control .

  • Page 18: Wiring Diagram

    Wiring diagram Wiring diagram (with the output groupings shown) Turquoise OMI-2 Probe status 1 (SSR) Turquoise/black Violet Low battery (SSR) Violet/black Green Error (SSR) Green/black White Machine start input Brown –ve Driver Yellow Signal Probe status 2a Grey Return (5 V isolated driven skip)

  • Page 19: Remote External Audible Output

    Any one of the probe status outputs can be used to drive an external audible indicator when set to On machines where the OMI-2 is to be integrated pulsed – see section “OMI-2 outputs” . with a tool setting probe input, and only one...

  • Page 20: Omi-2 Cable

    OMI-2 cable sealing Coolant and dirt are prevented from entering the Cable termination OMI-2 by the cable sealing gland . The OMI-2 cable can be protected against physical damage A ferrule should be crimped onto each cable wire by fitting flexible conduit if required .

  • Page 21: Fitting Flexible Conduit

    Fitting flexible conduit Fitting flexible conduit Slide nut B and the plastic olive onto the conduit . Screw the conduit termination piece into the end of the conduit . Fit the conduit to adaptor A and tighten nut Adaptor A Conduit termination Cable...

  • Page 22: Removing The Omi-2 Window

    Removing the OMI-2 window Removing the OMI-2 window It is not necessary to remove the OMI-2 from the machine when adjusting the switches or installing new parts . The window may be removed either to change reception/start range settings and output options (see relevant section), or replace a broken window .

  • Page 23: Removing The Omi-2 Label

    Removing the OMI-2 label Window Translucent area The window fits tightly in the OMI-2 body and is removed using the two long screws which are inserted into the threaded holes A . Press the top of the label to enable its removal .

  • Page 24: Changing The Reception Range

    Changing the reception range Changing the reception range (factory set to 100% range) Avoid touching filter To reduce the reception range to 50%, move the filter Avoid touching filter to the position indicated...

  • Page 25: Fitting The Omi-2 Window

    (0 .22 lbf .ft to 0 .37 lbf .ft) . could prevent sealing . Ensure that the ‘O’ ring seating in the OMI-2 body is clean . Place the window complete with ‘O’ ring onto the OMI-2 body .

  • Page 26: Screw Torque Values

    Screw torque values Screw torque values 3 mm AF 2 Nm (1 .47 lbf .ft) 8 mm AF 4 mm AF 5 Nm (3 .68 lbf .ft) HOLD 7/8 in AF 22 Nm (16 .22 lbf .ft) MAXIMUM...

  • Page 27: Fault-Finding

    Probe out of start range Change the CNC program to bring the fails to switch off when probe within the start range of the OMI-2 . in Optical Stop mode . Ensure that the appropriate START RANGE is selected (SW2) .
  • Page 28 Beam obstructed Remove the obstruction . Optical interference Remove the source of interference or reposition the OMI-2 so that the interfering An unexpected error occurs light does not shine into the during a probing cycle OMI-2 window . Intermittent wiring fault Correct the wiring .
  • Page 29 Interfering light source shining Remove the source of interference on, but OMI-2 ERROR directly into the OMI-2 window or reposition the OMI-2 so that the remains active . interfering light does not shine into the OMI-2 window . Check visual diagnostics (see page 7) .
  • Page 30 Change the adjacent probe to from a probe on an adjacent Low Power Mode or change the machine tool OMI-2 RECEPTION RANGE to 50% if this range is acceptable . The probe fails to switch on . Probe was already on when the...

  • Page 31: Parts List

    Type Part number Description OMI-2 kit A-5191-0049 OMI-2 with 8 m (26 ft) cable, magnetic label, tool kit and user’s guide . OMI-2 kit A-5191-0050 OMI-2 with 15 m (49 ft) cable, magnetic label, tool kit and user’s guide .
  • Page 33 Renishaw plc +44 (0)1453 524524 +44 (0)1453 524901 New Mills, Wotton-under-Edge, uk@renishaw.com Gloucestershire, GL12 8JR United Kingdom www.renishaw.com For worldwide contact details, please visit our main web site at www.renishaw.com/contact *H-2000-5233-03*...

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