ACU-RITE DRO 100 Reference Manual
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ACU-RITE DRO 100 Reference Manual

ACU-RITE DRO 100 Reference Manual

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DRO 100
REFERENCE MANUAL

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Summary of Contents for ACU-RITE DRO 100

  • Page 1 ™ DRO 100 REFERENCE MANUAL...
  • Page 2 ACU-RITE will, at its option and expense, repair or replace any part of the ACU-RITE product that fails to meet this warranty. This warranty covers both materials and factory labor. In addition, authorized ACU-RITE service representatives will provide service labor (field service) for a period of one year at no charge.

  • Page 4: Table Of Contents

    DRO 100 Table of Contents Introduction........................1 A Tour of the Readout....................1 Front and Back Views....................1 Keypad ........................2 Displays........................2 Power-On Position Recovery ..................3 Position-Trac ......................3 Readout Operations....................... 4 Absolute and Incremental Displays ................4 Absolute Display.......................4 Incremental Display ....................4 Radius/Diameter Display ..................5 Zeroing the Display ......................6...
  • Page 5 DRO 100 This symbol alerts you to the fact that important information concerning installation and operation of this readout has been included in this manual. Keep these instructions in a secure place for future reference.

  • Page 6: Introduction

    DRO 100 Introduction Introduction ACU-RITE’s DRO 100 readouts provide features for you to obtain increased efficiency and productivity from your manual machine tools. They are designed specifically for grinding applications, but they are also particularly useful for X-Y tables, height gages, and other applications.

  • Page 7: Keypad

    Introduction DRO 100 Keypad English / metric System setup SETUP ZERO conversion parameters Zero an axis display Selects absolute Selects radius or ZERO or incremental diameter display INCR display Displays At the top of the display window is a row of indicators. These tell you the current state of the readout.

  • Page 8: Power-On Position Recovery

    Power-On Position Recovery Position-Trac Certain ACU-RITE encoders, such as the ENC 150, contain closely-spaced reference marks that enable the display to show the correct position after a power interruption. The readout will tell you when power has been lost, and will prompt you to move each axis until a reference mark is located.

  • Page 9: Readout Operations

    Readout Operations DRO 100 Readout Operations Absolute and Incremental Displays Absolute Display Shows the distance from your current position to absolute zero. Grinding Wheel 1.625 Absolute Zero, also called Datum or Workpiece Zero 1.625 ABS Incremental Display Shows the distance from your current position to incremental zero. An incremental zero is set when you zero the incremental display.

  • Page 10: Radius/Diameter Display

    DRO 100 Readout Operations Radius/Diameter Display Pressing the key lets you view the part dimension either as a radius or as a diameter. Workpiece Grinding wheel 1.00 2.00 1.000 2.000 DIA...

  • Page 11: Zeroing The Display

    Readout Operations DRO 100 Zeroing the Display Absolute Zero On many prints, dimensions are measured Absolute zero from one or two surfaces of the part. By setting the readout’s absolute display to zero at a well- chosen surface, you can use the part’s dimensions directly from the print.

  • Page 12: Setup

    DRO 100 Setup Setup key lets you change the system parameters. The keys you use to change SETUP setup parameters are different for one-axis and two-axis readouts. To move from one parameter to the next, press the upper key (the...

  • Page 13: Linear Error Compensation

    Setup DRO 100 Linear Error Compensation Using the readout’s linear error compensation feature, you can compensate for machine inaccuracies. You will need a dial indicator and a measurement standard. Position the standard near the center of the region to be compensated.

  • Page 14: Count Direction

    DRO 100Changing System Parameters Count Direction This determines which way is positive. Move each axis in the positive count direction. The display will show a 1 or a 2 depending on count direction. You can change the count direction by pressing the lower key.

  • Page 15: Installation

    • C (32° to 104°F) with a non-condensing relative humidity of 25% to 85%. Proper Mounting ACU-RITE has developed special mounting kits for the readout which address the most common mounting requirements. Mounting kits include: Column and base machine mountings •...
  • Page 16 DRO 100 Installation Connecting the Encoders Insert the connector from each encoder into the mating connector on the back of the readout. Fasten it with a small screwdriver. Encoder input 1 will be displayed in the readout’s top display and input 2, if any, in the bottom display.
  • Page 17 Installation DRO 100 Checking Voltage and Connecting Power CAUTION Connecting the readout to a power source outside of the acceptable range, or making an inappropriate setting with the voltage selector, may damage the readout, the encoders, or both. Check that the voltage available at the power source is within specification before connecting it to the readout.

  • Page 18: Readout Specifications

    DRO 100 Readout Specifications Readout Specifications Characteristic Specification Operating conditions 0° to 40°C (32° to 104°F) 25% to 85% relative humidity (non-condensing) Storage conditions ° ° -40° to 60 C (-40° to 140 25% to 95% relative humidity (non-condensing) Input requirements...

  • Page 19: Troubleshooting

    This section is intended to provide you with some basic troubleshooting assistance with your readout system. If you cannot correct the problem after following these instructions, contact your authorized ACU-RITE distributor or OEM/OEI for repair or replacement procedures. No Operation...
  • Page 20 DRO 100 Troubleshooting Incorrect Operation If system positioning does not seem to be repeatable, the problem could be with the machine tool or with the readout system. Check the machine tool. Check that the table is not locked. Check the gib •...
  • Page 21 Troubleshooting DRO 100 Working memory—the memory used by the readout for calculations is faulty. While it may be possible to use the readout, it’s position display and other information will not be reliable. MEMORY FAILURE [2] – PRESS CLEAR CAUTION The readout cannot be relied on for correct operation if any memory failure is indicated.
  • Page 22 DRO 100 Troubleshooting Display test Begin by pressing the key. All indicators in all displays will ZERO light. Visually check each portion of each display to ensure that they are functioning properly. Press again to test the display electronics. All decimal points on all displays ZERO will light momentarily, then each segment of all displays will light in turn.
  • Page 23 Troubleshooting DRO 100 where measurements can again be displayed, selecting a lower display resolution, or zeroing the display. This error may also occur when using the automatic compensation routine while setting the LEC parameter. An error indicates that the calculated compensation factor was outside the acceptable range of -9999 to +9999, and usually is the result of incorrectly entering data.
  • Page 24 ACU-RITE Readout Systems are manufactured in the USA ACU-RITE IS AN ISO 9001 CERTIFIED MANUFACTURER ACU-RITE INCORPORATED ONE PRECISION WAY MASON INDUSTRIAL PARK JAMESTOWN, NEW YORK 14701 2001-702 EDITION A PRINTED IN USA...

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