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Summary of Contents for ACU-RITE DRO 200G
- Page 1 ™ DRO 200G REFERENCE MANUAL...
- Page 2 Readout Parameter Access Code An access code must be entered before machine-related parameters can be set or changed. This prevents inadvertent adjustments to the setup parameters. IMPORTANT The access code is 8891 Refer to the Setup section. Begin by pressing the key.
- Page 4 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.
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Page 6: Table Of Contents
DRO 200G Table of Contents Introduction........................1 A Tour of the Readout....................1 Front and Back Views....................1 Keypad ........................2 Displays........................3 Power-On Position Recovery ..................4 Position-Trac ......................4 Readout Operations....................... 5 Clear Key........................5 Absolute and Incremental Displays ................5 Absolute Display.......................5 Incremental Display ....................5 Radius/Diameter Display ..................6... - Page 7 DRO 200G 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.
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Page 8: Introduction
DRO 200G Introduction Introduction ACU-RITE’s readout series provides application-specific features DRO 200 required for you to obtain the most productivity from your manual machine tools. is designed specifically for grinding and general applications. DRO 200G Special features include presetting, radius/diameter conversion, and Position- Trac. -
Page 9: Keypad
Introduction DRO 200G Keypad Selects absolute or incremental display English / metric System setup INCR SETUP conversion parameters Selects radius or diameter display Enter all numeric values with these Begin a preset Zero an axis display ZERO ZERO ENTER CLEAR... -
Page 10: Displays
DRO 200G Introduction Displays At the top of the display window is a row of indicators. These tell you the current state of the readout. DIA INCR ABS ZERO SET Lets you know when Tells you when an Appears when... -
Page 11: 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 indicate when power has been lost, and will prompt you to move each axis until a reference mark is located. -
Page 12: Readout Operations
DRO 200G Readout Operations Readout Operations Clear Key Use the key to erase digits that you entered by mistake, or to take you back if CLEAR you’ve pressed a wrong function key. Absolute and Incremental Displays Absolute Display Shows the distance from your current position to absolute zero. -
Page 13: Radius/Diameter Display
Readout Operations DRO 200G Automatic Display Switching Sometimes the readout will switch from one display to another automatically. When you enter a preset, for example, the display switches to the incremental display so you can move to zero. Whenever the readout does an automatic display switch, INCR will appear briefly in the display. -
Page 14: Zeroing The Displays
DRO 200G Readout Operations Zeroing the Displays Absolute Zero On many prints, dimensions are measured from one or two Absolute zero surfaces of the part. By setting the readout’s absolute display to zero at a well- chosen surface, you can enter the part’s dimensions directly from the print, using absolute presets. -
Page 15: Incremental Zero
Readout Operations DRO 200G Setting Absolute Zero Using an Electronic Edge Finder Install the electronic edge finder and connect it to the readout. Make sure that the absolute position is displayed. INCR ZERO Press the key for the appropriate axis. -
Page 16: Presetting
DRO 200G Readout Operations Presetting When you preset a dimension, the readout places an incremental zero at the location you specify. Then, the display automatically switches to incremental display so that you can move to zero. Begin a preset by pressing an axis key ( for example). -
Page 17: Absolute And Incremental Presets
• incremental presets for incremental dimensions. • When you enter an absolute preset, it does not matter where the tool position is. The DRO 200G calculates the desired location automatically. 2.44 1.44 ENTER INCR 0.72... -
Page 18: Near Zero Warning
DRO 200G Readout Operations Near Zero Warning When you are moving to zero, the readout can “warn” you when you are getting close. This allows you to machine faster and avoid overshooting your desired location. You can set the near zero range in Setup. -
Page 19: Setup
Setup DRO 200G Setup key lets you change the system parameters. Some of these parameters SETUP are job related, meaning that they may change from job to job. Others are machine related and should be set as part of the installation. The machine-related... -
Page 20: Job Setup Parameters
DRO 200G Setup Job Setup Parameters Display Resolution The display resolution will be the same as the encoder resolution. If the job tolerance is coarser than the encoder resolution (±0.005 for example), you can adjust the display resolution so you won’t be tempted to waste time by machining to a finer resolution. -
Page 21: Linear Error Compensation
Setup DRO 200G Linear Error Compensation Segment 1 Segment 2 Segment 3 includes a linear error DRO 200G compensation feature that enables you to Machine table front view compensate for machine tool inaccuracies. (slightly exaggerated) You can have up to three different compensation segments per axis. -
Page 22: 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 23 Installation DRO 200G 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, input 2 in the next display, and input 3, if any, in the bottom display.
- Page 24 DRO 200G Installation 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.
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Page 25: Readout Specifications
TTL square wave signal in quadrature ° nominal phase relationship) Maximum input rate: 50 KHz Reference signal: TTL square wave Edge finder input Compatible with ACU-RITE electronic edge finder Size 12.5”W x 5.125”D x 6.5H” Weight 7.5 lbs. Mounting Bottom: two ¼ -20 threaded inserts... -
Page 26: 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 27 Troubleshooting DRO 200G 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. Ensure that the •...
- Page 28 DRO 200G Troubleshooting 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 29 Troubleshooting DRO 200G Keypad test Begin by pressing the key, then press each key (except the key) in turn to verify that it is functioning properly. When a key is pressed, the X- axis activates a “plus sign” indicator and increments a count. When you release the key, the plus sign disappears.
- Page 30 DRO 200G Troubleshooting If the problem remains in the same display, the readout is in error. • If the problem follows the connection change, the linear encoder may be in • error. Refer to the Checking the Linear Encoders section of your encoder reference manual.
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Page 31: Printed In Usa
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 2001-708 EDITION A PRINTED IN USA...
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