Mitutoyo ProScale 950 Series User manual

ProScale
Series 950
User
Manual

Mitutoyo America Corp. - ProScale Series 950 DRO 2 of 34
SAFETY WARNING
Before installing ProScale products, turn off the
machine and disconnect it from its power source to
avoid injury.
SAFETY WARNING
Warranty
Mitutoyo America Corporation Inc., (MAC) warrants this product against defective parts
and workmanship for one year, commencing from the date of original purchase. Upon
notification of a defect, MAC shall have the option to repair or replace any defective part.
Such services shall be the customer's sole and exclusive remedy. Expenses incidental to
repair, maintenance, or replacement under warranty, including those for labor and
material, shall be borne by MAC. Freight or transportation charges to MTI shall be paid
by the customer.
Except as expressly provided in this warranty, MAC., does not make any warranties in
respect to the product, either expressed or implied, including implied warranties of
merchantability or fitness for a particular purpose, except as expressly provided in this
agreement.
MAC shall not be liable for any special, incidental, or consequential damages or for loss,
damage or expense directly or indirectly arising from the customer's use of or inability to
use the equipment either separately or in combination with other equipment, or for
personal injury or loss or destruction of other property, or from any other cause.
Revision B, P/N 800-1024-002. Copyright

2002, All rights reserved.
ProScale™
General Instruction Manual
Includes: ProScale Model 150 & 250
ProStop
Measurement Table Kits
ProPanel
ProCaliper
Digital Displays

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Table of Contents
SECTION 1 GENERAL INFORMATION................................................................................................................... 4
Introduction ..................................................................................................................................................... 4
ProScale Terminology..................................................................................................................................... 4
Scales ............................................................................................................................................................. 5
Readheads...................................................................................................................................................... 6
Displays........................................................................................................................................................... 7
Replacement Parts.......................................................................................................................................... 7
Product Specifications..................................................................................................................................... 8
SECTION 2 950-404 AND 950-405.................................................................................................................... 9
Installation:...................................................................................................................................................... 9
Calibration:.................................................................................................................................................... 10
Calibration:.................................................................................................................................................... 11
Maintenance:................................................................................................................................................. 11
SECTION 3 950-406 AND 950-407.................................................................................................................. 12
Installation:.................................................................................................................................................... 12
Calibration:.................................................................................................................................................... 15
Maintenance:................................................................................................................................................. 15
SECTION 4 DIGITAL DISPLAY.......................................................................................................................... 16
Display Power............................................................................................................................................ 16
Programming The Display.......................................................................................................................... 16
Position Display Units................................................................................................................................. 18
Measuring Modes....................................................................................................................................... 18
Offset Adjustment....................................................................................................................................... 19
Lock Mode ................................................................................................................................................. 19
Display Hold Mode..................................................................................................................................... 19
Position Monitor Mode................................................................................................................................ 20
Segment Offset Adjustment........................................................................................................................ 20
Sending position to SPC device ................................................................................................................. 21
Jumpers..................................................................................................................................................... 21
Changing the Batteries............................................................................................................................... 22
Mounting the Display.................................................................................................................................. 22
SECTION 5 MISCELLANEOUS .......................................................................................................................... 23
Scales........................................................................................................................................................ 23
Readheads................................................................................................................................................. 23
Frequently Asked Questions ...................................................................................................................... 24
Error Codes & Factory Service................................................................................................................... 25
Communicating With Other Equipment....................................................................................................... 25
Read Head Output ..................................................................................................................................... 25
Abbe Error.................................................................................................................................................. 27
Appendix A................................................................................................................................................. 28
SECTION 6 ACCESSORIES .............................................................................................................................. 31
ProMUX-3 ..................................................................................................................................................... 31
ProMUX-4, ProMUX-8................................................................................................................................... 32
Pro RF........................................................................................................................................................... 33

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SECTION 1 GENERAL INFORMATION
Introduction
ProScale digital measuring systems are affordable precision electronic devices for
making linear measurements with speed and accuracy. ProScale consists of a scale, a
readhead (or encoder) and a digital display. It uses capacitive encoder technology, the
same technology used in digital calipers.
ProScale is ideal for most measuring requirements where high –(<10 μm) –accuracy is
not needed. Because ProScale shows the exact measurement on its display, it
eliminates the guesswork involved in reading and interpreting tape, pointer, or shaft
encoder scales. It is compatible for retrofitting or as original equipment on most
machinery and as a result, machine setup time can be reduced considerably, maximizing
throughput on a machine.
ProScale's measurement mode can be changed to display sixteenths, thirty-seconds,
sixty-fourths, or thousandths of an inch; millimeters or centimeters. In any mode,
ProScale is designed to provide and maintain its accuracy for years.
ProScale is extremely rugged and durable. Unlike optical measurement systems, the
accuracy of capacitive systems is not affected by sawdust or other non-conductive
contaminants. Additionally, power consumption is much less than magnetic or optical
measurement systems.
Because ProScale is a solid-state electronic device there's very little to wear out. The
readhead and scale are designed to withstand shop dirt, dust, and other airborne
contaminants, and the controls are sealed with a protective cover for long life. With
normal care, ProScale will last for years.
ProScale Terminology
All ProScale systems consist of a SCALE, a READHEAD, and a digital DISPLAY.
The SCALE consists of a series of conductive patterns bonded to an aluminum extrusion.
The READHEAD contains a computer chip, which transmits and receives signals to the
scale using capacitive coupling. The received signal is used by the readhead to calculate
it’s position to within 0.005mm. This position data is then sent to the digital DISPLAY,
where it can be displayed in millimeters, centimeters, inches, or sent to an external data
acquisition device.
Absolute technology systems use a robust and sophisticated method to measure
position, resulting in a high immunity to electrical interference and one that does not
forget its position when power is removed.

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Scales
An absolute, (ABS), system measures its actual position by reading a pattern which is
unique at any given location over its length. The maximum length of a ProScale absolute
pattern is 430mm (16.932 in.). The pattern must then repeat itself.
Consider the illustration above to represent a ProScale ABS. There are three absolute
patterns (each pattern is 430mm long), joined together end to end. Within each pattern
the system is totally absolute. However, crossing over a pattern joint now presents the
readhead with information identical to what it read in the previous pattern. At this point
the system must be able to recognize that it has crossed over a pattern joint and
therefore must add or subtract the value of 1 pattern offset - 430mm. In fact, each time
the readhead passes over a pattern joint it must keep track of how many patterns it has
passed, and in which direction. This action is accomplished by the digital display.
What does all this mean? If the readhead remains on the same absolute pattern, it can
have power removed, its position changed and power restored without loss of position
information. However, if power is removed and the readhead passes over a pattern joint,
the transition will not be recognized. When power is restored the system knows its
absolute position on the new pattern, but does not know how many patterns it has
passed, or in which direction!
ProScale displays provide the operator with a method to adjust the pattern offset so the
system displays the correct reading at all times without loss of accuracy. See Section 4
All ABS scales have a “zigzag” pattern etched onto the green laminate. Take care to not
damage this etching or remove the green coating. There should also be a pattern
“break” approximately every 430mm (17in.). Do not attempt to shorten ABS style
scales; call Accurate Technology 800-233-0580 for assistance.
All 950-404 & 405 Series scales should be mounted to machinery using the supplied M5
(or 10-32) machine screw and Connector Link. This Connector Link is specially designed
to flex slightly if there is any mechanical binding in the readhead-to-scale mounting.
The Connector Link should always be mounted in the same direction as the scale (see
the diagram Section 2). Warranty is void if the Connector Link is not used.
All 950-406 & 407 scales are designed to be mounted on machinery using M4 (or 6-32)
Flathead screws. MAC provides a Guide Clip to attach the readhead to a moving part of
a machine, see the diagram in Section 3 Warranty is void if the Guide Clip is not used.

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ABS Style Pattern
Readheads
ABS readheads have “BLACK END OF SCALE” labels on the cover, and the wire exits
from the corner of the housing. Extreme care must be taken not to damage the six brass
“fingers” inside the readhead housing. ABS style readheads, used in all 950 Series
systems, must be mounted on ABS scales with a particular orientation. Each readhead
has an arrow on the label pointing in the direction of the “BLACK END OF SCALE”
(each ABS style scale will have one end painted black). This relationship is very
important, since the readhead will work, but produce erratic results if incorrectly installed.
To insure proper operation, be sure the arrow on the readhead is pointing toward the
BLACK end of the scale. The standard readhead has 2m (10 ft.) of cable. For special
cable lengths, contact MAC.
ABS Readhead
ABS Scale

Mitutoyo America Corp. - ProScale Series 950 DRO 7 of 34
Displays
Refer to Section 4 - Digital Displays - for installation, programming and operation.
General Purpose LCD Display
(Replaces all previous displays)
Replacement Parts
Part
Part Number
950-404 Scale only
700-1510-001
950-405 Scale only
700-1518-001
950-406 Scale only
700-2504-001
950-407 Scale only
700-2508-001
950-404 & 405 Flex link
100-1025-001
950-406 & 407 Guide clip
100-1026-001
Instruction Manual
800-1024-002
Digital Display
701-1006-001
Read head
701-1003-001

Mitutoyo America Corp. - ProScale Series 950 DRO 8 of 34
Product Specifications
Measuring Range:
950-404 Up to 250mm (10in)
950-405 Up to 450mm (18in)
950-406 Up to 1200mm (4ft)
950-407 Up to 2400mm (8ft)
Accuracy: + .165mm/m to + .20mm max error @ 2 meters
+ .002in/ft to + .008in max error @ 8 feet
Repeatability: .01mm or .001in
Display Range: + 9999.99 mm; + 999.999 cm; + 394.000 in; + 99 63/64 in.
Operating Temp: 0 to 51

C, 32 to 120

F
Power: 2 AA Batteries
Temp Coef: 25ppm/1°C (i.e. .06mm / over 2.5m / 10° C)
Max. Slew Rate: 450 mm/sec. (18 inches/sec.)
Input Format: Mitutoyo SPC (mm only)
Output Format: Mitutoyo SPC (mm or inch)
Readhead: 2m, 10-conductor Mitutoyo 936937 termination
Dimensions: See Appendix A
US Patents: 4420754, 4879508, 4878013, 4959615
Warranty: One year from date of purchase.
All ProScale products are MADE IN USA

Mitutoyo America Corp. - ProScale Series 950 DRO 9 of 34
SECTION 2 950-404 AND 950-405
ProScale 950- 404 and 950-405
General Purpose system with standard measuring ranges of 250mm and 450mm.
950-404/405 systems use ABS style scales, ABS style readheads, and general-purpose
digital displays. Neither the scale nor readhead are compatible with other MAC ProScale
incremental systems.
ProScale is easy to install. By following the basics of good installation in this section,
reliable, error-free operation is assured. Because ProScale can be installed on many
different types and brands of equipment, all installations will be a little different.
Therefore, it's the responsibility of the installer to choose the bolts, screws, or other
mounting hardware that guarantee proper installation for optimum operation.
Installation:
1. Note the orientation of the readhead on the scale. Be sure the arrow on the readhead
points towards the “BLACK END OF SCALE”. This orientation is critical for proper
operation of ProScale. Be sure the mounting location for the readhead and scale will
allow this orientation.
2. Determine an appropriate mounting location for the system. The readhead should be
mounted to a stationary part of the machine. The scale should be mounted to the
moving part of the machine with the connector link. Be sure to allow sufficient space
to accommodate the connector link, which is used to mount the scale to the moving
part of the machine. The Display should be mounted in a location which allows for
easy viewing by the machine operator. The location of the parts should also
safeguard the cable from possible damage. All ProScale wiring should be kept as far
away as possible from the machine’s wiring and motors and dust collection systems.
Avoid running the readhead wiring parallel to high voltage/current wiring.

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Connector Link
3. Mount the readhead using three screws or bolts. It may be necessary to use washers
or spacers to ensure a good mount (if the readhead is to be mounted on an uneven
surface).
4. Check that the scale is properly aligned with the direction of motion of the moving part.
The connector link will compensate for only a small amount of
misalignment. The connector link must be mounted in the
same direction as the scale (as in the figure below).
Note: Failure to use the connector link will void the
warranty.
5. Mount one end of the connector link to the scale using an M5
(or 10-32) screw and the other end to the moving part of the
machine. Check that both connections are secure;
inaccurate/erratic readings may otherwise occur.
6. Plug the readhead into the display. See Section 4 regarding
mounting and use of different display versions.
MOVING PART OF MACHINE
DISPLAY
CONNECTOR LINK
MOVEMENT
A Typical Model 950-404 Installation
READHEAD