ACU-RITE DRO 100 User Manual
DRO 100
™
REFERENCE MANUAL
Warranty
ACU-RITE Products and accessories are warranted against defects
in material and workmanship for a period of three years from the
date of purchase. 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.
Notice of the claimed defect must be received by ACU-RITE within
the warranty period.
This warranty applies only to products and accessories installed
and operated in accordance with this reference manual. ACU-RITE
shall have no obligation, with respect to any defect or other
condition caused in whole or part by the customer’s incorrect use,
improper maintenance, modification of the equipment, or by the
repair or maintenance of the product by any person except those
deemed qualified by ACU-RITE.
Responsibility for loss of operation or diminished performance due
to conditions beyond ACU-RITE’s control cannot be accepted by
ACU-RITE.
The foregoing warranty obligations are in lieu of all expressed or
implied warranties. ACU-RITE INCORPORATED shall not be liable
under any circumstances for consequential damages.
30 Day Red Carpet Warranty
All ACU-RITE products are covered by a 30-day Red Carpet
Warranty. If in the first 30 days this product fails for any reason,
repack it in the original packing materials and contact your
Authorized ACU-RITE Distributor for return procedures.
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
Absolute Zero...........................................................................................................6
Incremental Zero.......................................................................................................6
Setup ................................................................................................................................ 7
Display Resolution....................................................................................................7
Linear Error Compensation.......................................................................................8
Count Direction.........................................................................................................9
Encoder Resolution..................................................................................................9
Radius/Diameter.......................................................................................................9
Installation .....................................................................................................................10
Readout Specifications ...............................................................................................13
Troubleshooting........................................................................................................... 14
!
This symbol alerts you to the fact that
important information concerning the
installation and operation of this readout
has been included in this manual.
DRO 100
Keep these instructions in a secure place
for future reference.
DRO 100 Introduction
serial number
Electrical & fuse
Indicators
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.
A Tour of the Readout
Front and Back Views
MM DIA INCR ABS ZERO SET
ZERO
ZERO
INCR
SETUP
MM
ABS
RAD
DIA
Power switch
and voltage
selector
rating information
!
115V
Ground wire
connection
FREQUENCY
VOLTAGE
CURRENT
FUSE
1
INPUT 2
INPUT 1
DRO
PN 2001009
SN 9766554
Encoder
inputs
Model number and
Introduction DRO 100
absolute zero.
Zero an
English / metric
System setup
Selects radius or
Keypad
ZERO
ZERO
axis display
conversion
Selects absolute
or incremental
display
MM
ABS
INCR
SETUP
RAD
DIA
parameters
diameter display
Displays
At the top of the display window is a row of indicators. These tell you the current
state of the readout.
MM DIA INCR ABS ZERO SET
In addition to the lighted indicators along the top of the display, the top axis
display will scroll longer messages that will help you step through some of the
procedures.
Appears when you’re
positioning in metric,
dark when you are
positioning in inches.
Tells you when an
axis is displaying
diameter.
Lets you know when
you are setting an
These tell you if the
position display is
incremental or absolute.
2
DRO 100 Introduction
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. By traversing the
reference marks once in each axis, you will re-establish the display position
relative to the last known zero. The most you will ever have to move an axis is
about one inch. You must move in the positive count direction. A flashing decimal
point indicates that the last position has not been recalled.
If you use an encoder without Position-Trac, the procedure for recovering your
position is slightly different. Reference marks on these encoders are about 8”
apart. You must find a convenient reference mark and then use the same mark
every time.
1. Move near the desired reference mark.
2. Press and hold the
3. Move slowly past the reference mark until the readout recalls its position.
ABS
key until the decimal point starts to flash.
INCR
You must move in a positive direction.
3
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