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Digital Readouts
for Manually Operated
Machine Tools
October 2003
2
HEIDENHAIN Digital Readouts
for Manually Operated Machine Tools
Increased productivity with
HEIDENHAIN digital readouts
By retrofitting your manually operated
machine tools or measuring equipment
with digital readouts from HEIDENHAIN,
you’ve made a decision for increased
productivity, higher precision and more
operating ease.
Regardless of whether you’re installing on
new equipment or retrofitting machines
already in operation, HEIDENHAIN digital
readouts can easily be retrofitted to any
model of machine or type of equipment,
whatever the application and number of
displayed axes.
Save time and reduce cost
A digital readout from HEIDENHAIN will
save you valuable time. The distance-togo
function allows you to move swiftly to
the next nominal position, simply by
traversing to the display value zero.
Or, you can use the multiple datum set
function to enter position values quickly
and without tedious calculation work.
To enable you to machine directly from
the dimensions in your drawing, digital
readouts offer the following support:
Absolute/incremental dimensioning
Radius/diameter switching (for lathes)
Aids for fast datum setting
And POSITIP speeds up small-batch
production – repetitive machining
sequences can be saved as a program in
POSITIP and used as often as you like.
HEIDENHAIN linear encoders for
accurate positioning
HEIDENHAIN digital readouts work with
HEIDENHAIN linear encoders, which are
renowned for high accuracy and reliability.
The linear encoders are sensors that
directly record the movement of the axis
slide and convert it into electrical measuring
signals. These signals are evaluated by the
display, which shows traverse paths and
accurate positions as numerical values.
Backlash in machine transfer elements
does not affect the accuracy of the display.
Made-to-measure solutions
HEIDENHAIN offers digital readouts for
every application – even for large traverses
of 30 m and longer. Expert advice is
provided by the competent staff at all
HEIDENHAIN distributors. They are familiar
with our wide product range and will find the
optimal solution for your situation. You will
find the retrofit agent closest to you on the
back page of this brochure.
Turning
For HEIDENHAIN digital readouts in the Internet:
www.positionsanzeigen.de
3
Contents
Milling
Drilling
Eroding
Grinding
Practical Application Examples 4
Advantages of HEIDENHAIN Digital Readouts 6
HEIDENHAIN Display Units
Overview 8
POSITIP 880: Display for max. 6 axes 10
The ND 700 Series: Displays for 2 and 3 Axes 12
The ND 200 Series: Universal 1-Axis Displays 14
Functions
Convenient Datum Setting on Milling Machines 16
Convenient Datum Setting on Lathes 17
Features for Working with Lathes 18
Hole Patterns and Rectangular Pockets 19
Positioning with Distance-To-Go Display 20
Programming the POSITIP 21
HEIDENHAIN Linear Encoders 22
Return on Investment 28
Length Gauges from HEIDENHAIN 30
Cables 32
Dimensions Display Units and Linear Encoders 33
4
Circular grinding
ND 730 display unit
Linear encoders on X and Z: LS 406C
Display step: 1 µm
HEIDENHAIN digital readouts have universal
application: In addition to standard
tasks on milling, drilling, boring machines
and lathes, they also offer ideal solutions
for many applications on machine tools,
measuring and testing equipment, and
special machines—in fact all machines
where axis slides are traversed manually.
HEIDENHAIN Digital Readouts at Work
Drilling
POSITIP display unit
Linear encoders on X and Y: LS 406C
Display step: 1 µm
p. 10
p. 12
ND 760 display unit
Linear encoders on X and Y: LS 603C,
On Z: LS 303C
Display step: 5 µm
Milling p. 12
5
Turning
ND 770 display unit (sum display Z and ZO)
Linear encoders on X and ZO: LS 303C
On Z: LS 603C
Display step: 5 µm
p. 12
p. 14
Grinding
ND 221B display unit
Linear encoders on X and Y: LS 406C
Display step: 1 µm
p. 14
Eroding
ND 750 display unit
Linear encoders on X and Y: LS 106C
On Z: LS 406C
Display step: 1 µm
Measuring and inspection
ND 281B display unit
Linear encoders on X and Y: LS 406C
Display step: 0.5 µm
p. 12
6
Advantages of HEIDENHAIN
Digital Readouts
p. 10
Fast
HEIDENHAIN’s digital readouts save time.
The distance-to-go display feature allows
you to approach the next nominal position
quickly and reliably, simply by traversing to
a display value of zero. Datums can be set
wherever you need them. This simplifies
positioning, especially for workpieces with
complicated dimensions.
When milling or boring hole patterns or
rectangular pockets, the geometric data
can be entered simply and quickly and the
positions approached directly using the
distance-to-go display.
On lathes, the sum display feature for
saddle and top slide contributes to more
accurate positioning. If taper dimensions
are not complete, the position display will
help you to calculate the angles.
The POSITIP is ideal for small-batch
production, because repetitive machining
sequences can be stored as programs and
then used as often as you require.
ND 770
Vernier scales are no longer necessary
if your machine is fitted with a HEIDENHAIN
readout
LS 303 C on the Z axis
of a milling machine
Reliable
A highly readable display shows the measured
positions referenced to the selected
datum. As a result, the probability of error
is reduced and machining becomes more
reliable.
POSITIP’s graphic positioning aid improves
the speed and reliability of the distance-togo
display. Input of geometric data is made
easy with the graphic display function.
Accurate
On older machine tools, precise machining
in the range of 0.01 mm (0.0005 in.) is a
matter of luck. Worn machine elements
make exact dial and vernier settings
impossible. Linear encoders from HEIDENHAIN
sense machine slide movement
directly, bypassing the backlash caused by
mechanical transfer elements such as
leadscrew/nuts, racks and gears. By
determining the slide position directly, you
achieve higher machining accuracy and
reduce scrap rates.
8
POSITIP 880 ND 700 Series
Display with conversational guidance and Displays with conversational
guidance and
contextual help on a flat screen; advanced features
graphic features, program memory
Applications Primarily for Primarily for Primarily for
milling machines lathes milling machines
Axes POSITIP for milling POSITIP for lathes ND 710 X, Y ND 720 X, Y
up to 6 axes from up to 6 axes from ND 750 X, Y, Z ND 760 X, Y, Z
A to Z A to Z and ZO, ZS
Display step 5 µm, 1 µm or finer 5 µm or 1 µm 5 µm, 1 µm or finer
Datums 99 1 2 (switchable to 9)
Tool data For 99 tools For 1 tool
Features Probing functions for • Radius/diameter Probing functions for
Probing functions for
datum setting, display datum setting datum setting,
primarily with the • Separate value or sum with the tool: “Edge,”
primarily with the KT
KT edge finder: display ZS for Z and ZO “Centerline” and edge finder:
“Edge,”
“Edge,” “Centerline” “Circle Center“ “Centerline“ and
and “Circle Center”
Distance-to-go display with nominal position input Distance-to-go
display with nominal position input
in absolute or incremental values in absolute values
Calculation and graphic Oversize allowance, Calculation and display of
circular and linear
display of hole pattern Multipass cycle hole patterns
positions and rectangular
pockets
Cutting data calculator Taper calculator –
Programming and storage of max. –
999 program blocks per program
Interface RS-232-C/V.24, Centronics – RS-232-C/V.24
Versatile, ergonomic, Well Designed:
HEIDENHAIN Display Units
Digital readouts from HEIDENHAIN are
designed with special emphasis on user
friendliness.
Typical characteristics:
• Highly readable digital display.
• Simple, logically arranged keypad helps
you quickly master the available functions
and enter positions rapidly and
reliably.
• Ergonomically designed push-button
keypad with symbols that withstand
years of use.
• Splash-protected front panel prevents
damage to the display unit from coolant.
ND 700 POSITIP
9
ND 200 Series
Universal displays for 1 axis
Primarily for Positioning devices, measuring and testing equipment,
lathes milling machines
ND 730 X, Z ND 221B ND 281B ND 282B
ND 770 X, ZO, Z 1 axis 1 axis 1 axis
5 µm, 1 µm or finer 5 µm, 1 µm or finer
1 2
For 9 tools –
• Radius/diameter – • Tolerance check,
display • min./max. evaluation from a series
• Separate value or
sum display
for Z and ZO
–
– –
Taper calculator –
– –
– RS-232-C/V.24 BCD
ND 200
• Sturdy cast-metal housing built for the
worst of day-to-day workshop conditions.
10
The POSITIP 880 is a versatile display
unit designed primarily for milling machines,
boring machines and lathes with up to six
axes. In addition to the features offered on
the ND series displays, POSITIP offers
advanced capabilities. It supports all
operations with straightforward interactive
menus on its large, easy-to-read flat
screen. And it does it on big machines as
well: Because the POSITIP 880 permits the
connection of a separate display and
control unit, you can have all position
values and functions available at a second
position.
The POSITIP 880
Diverse functions—ease of operation
Soft keys enable POSITIP to offer a wide
range of functions such as zero reset or
entry in absolute or incremental dimensions.
The functions of all soft keys are
identified either with words (in the language
of your country) or with easily understood
symbols. Each operating mode, work step
and screen display has individualized onscreen
operating instructions, often with
graphic illustrations, which can be called
simply by pressing the HELP key. The
INFO feature gives you additional onscreen
support such as a pocket calculator,
a stopwatch, a cutting data calculator
for milling and a taper calculator for settings
on the top slide for turning. The MOD
key calls up user parameters such as
radius/diameter switchover or separate/
sum display of two axes.
p. 21 Programs for small-batch production
The programming capabilities of POSITIP
make it ideal for small-batch production on
manual machine tools: up to 999 program
blocks per program can be stored in its
memory. Programs can be created either
by keying them in step-by-step or generating
them through actual position capture
(teach-in programming). The subprogramming
capability lightens your work load:
repetitive machining sequences on the
same workpiece only have to be entered
once. Fixed cycles such as Bolt Hole
Circle, Linear Hole Pattern or Rectangular
Pocket (boring, milling) or Multipass (turning)
keep your programs short and save
you programming time.
11
POSITIP 880
Application Milling and boring machines Lathes
Axes Up to 6 axes from A to Z Up to 6 axes from A to Z and ZO, ZS
Encoder inputs 11 µAPP, 1 VPP or EnDat
Display step 5 µm, 2 µm, 1 µm (0.0002 in., 0.0001 in., 0.00005 in.) or
finer, and 0.01° or finer
Display Color flat-panel display for position values, dialog and input,
graphic functions,
graphic positioning aid
Status display Operating mode, REF, distance-to-go positioning cursor,
inches, scaling factor, feed rate
Datum number, tool number and axis, Tool number, diameter display ,
tool radius compensation R–, R+, R0 sum display
Features • REF reference mark evaluation for distance-coded and single
reference marks
• Distance-to-go mode with input of nominal positions (absolute and
incremental)
• Contour monitoring with magnify function
• Scaling
• Any axis combinations
• HELP: on-line operating instructions
• INFO: pocket calculator, stopwatch
• 99 datums, 99 tools • 1 datum, 99 tools
• Probing functions for datum acquisition, • Freezing the tool position
for back-off
primarily with the KT edge finder: “Edge,” • Oversize allowance
“Centerline” and “Circle Center”
• Tool radius compensation
• Calculation of positions for bolt hole
circles and linear hole patterns
• Positioning aids for rectangular pockets
• INFO: cutting data calculator • INFO: taper calculator
Programming 999 program blocks per program; subprogramming with rotation
and
mirroring; teach-in programming
Cycles Line segments, circular arcs, chamfers, Line segments, circular
arcs, chamfers,
circular and linear hole patterns, rectangular multipass
pockets
Axis error compensation Linear and multipoint linear with 128
compensation points
Data interface Serial RS-232-C/V.24; 300 to 115 200 baud
for output of programs, measured values and parameters;
for downloading programs and parameters
Parallel Centronics for measured value output
Switching inputs and outputs On request (over separate AMI input/output
unit)
Accessories Tilting base, second operating unit
KT 130 edge finder –
Power source 100 V to 240 V (–15% to +10%), 50 Hz to 60 Hz (± 2 Hz);
power consumption 35 W
Operating temperature 0° C to 45° C (32° F to 113° F)
Protection (IEC 60529) IP 40, front panel IP 54
Weight 3.2 kg (7.1 lb)
12
The ND 700 series consists of display
units with special features for milling and
boring machines (ND 710/ND 720 for two
axes, ND750/ND 760 for three axes) or for
lathes (ND 730 for two axes, ND 770 for
three axes).
These models all feature conversational
programming to assist the machine
operator with positioning tasks and explain
the special display functions.
For positioning tasks, all models have a
distance-to-go display feature that allows
you to quickly and reliably approach
positions simply by traversing to a display
value of zero.
With the ND 710 and ND 750 displays,
it is possible to “freeze” tool position
values to set the datum without using
an edge finder. After touching the
workpiece you can retract the tool to
facilitate workpiece measurement.
The ND 720 and ND 760 displays also
allow you to connect the KT edge finder
from HEIDENHAIN (see ”Datum Setting
for Milling and Drilling”) and use the probing
functions to locate 2 datum points.
The ND 700 Series Displays
The ND 710/750 and ND 720/760 are
equipped with hole-pattern functions for
milling, drilling and boring machines.
The ND 730 and ND 770 display units
for lathes include a tool memory for 9 tools
whose data can be referenced to any
datum point. To set the datums, touch the
workpiece and freeze the tool position.
Then retract the tool and measure the
workpiece.
The ND 770 is the recommended choice if
the lathe is equipped with a saddle and top
slide: the sum display feature allows you to
display the saddle and top slide either
together or separately—at the touch of a
key.
p. 19
p. 16
p. 20
ND 760
13
Primarily for milling Primarily for
and boring machines lathes
ND 710 ND 750 ND 720 ND 760 ND 730 ND 770
Axes X, Y X, Y, Z X, Y X, Y, Z X, Z X, ZO, Z
Display Axis positions (9 decades and sign),
dialog and input display
Status display Active axis (SET), REF, distance-to-go ∆, inches, scaling
factor SCL
Datum number, Tool number
tool compensation R+, R- Radius/diameter
Probing functions
Display step 5 µm or 1 µm 5 µm, 2 µm, 1 µm (0.0002 in., 0.0001 in.,
0.000 05 in.) or finer
Features • REF reference mark evaluation for distance-coded or single
reference marks
• Distance-to-go mode with input of nominal positions (absolute)
• Shrinkage compensation
• Freezing the tool position value for back-off
• Tool radius compensation –
• 2 datums (switchable to 9), •2 datums (switchable to 9), • 1 datum, 9
tools
1 tool 1 tool
• Probing functions for datum • Probing functions for datum
acquisition with the tool: acquisition, primarily with the
“Edge”, “Centerline” and KT edge finder: “Edge”,
“Circle center” “Centerline“ and “Circle center”
Calculating the position values for hole patterns Taper calculator
(bolt hole circles, linear hole patterns)
Axis error compensation Linear and multipoint over 64 compensation
points
RS-232-C/V.24 – For output of programs –
data interface and measured values
Data transfer rates – 110 to 38400 Baud –
Switching inputs – Two inputs: measured value –
output (pulse and contact)
Accessories – KT edge finder –
Tilting base
Power source 100 V to 240 V (–15% to +10%), 50 Hz to 60 Hz (± 2 Hz);
power consumption 15 W
Operating temperature 0° C to 45° C (32° to 113° F)
Protection (IEC 60529) IP 40, front panel IP 54
Weight 3 kg (6.6 lb)
Separate or sum
display for Z and Z0
–
14
The ND 200 series display units are
designed for use with one linear encoder
or length gauge. For simple positioning
tasks such as infeed for a circular
saw or press travel, as well as for
For One Axis:
The ND 200 Series Universal Displays
measuring and inspection stations, an
ideal choice is the ND 221B. Numerical
position displays make it possible to
transfer the measuring results over an
RS-232-C interface to a PC or printer.
For measuring tasks with special requirements
such as sorting and tolerance
checking or minimum/maximum display
in a measurement series, HEIDENHAIN
recommends the ND 281B (with RS-232-C
interface) and the ND 282B (with BCD
data output). The switching inputs and
outputs of these two models permit their
use also in simple automated environments.
p. 30
ND 281B
15
Single-Axis Displays
ND 221B ND 281B ND 282B
Display Position values (9 decades and sign; ND 282B: 8 decades)
Status displays REF, inches, datum 1, datum 2, SET datum setting
− PRINT, MIN/MAX/DIFF/ACTL,
START
Sorting and tolerance checking (< = >)
Display step 5 µm, 2 µm, 1 µm (0.0002 in., 0.0001 in., 0.000 05 in.) or
finer
Features • REF reference mark evaluation for distance-coded or single
reference marks
• 2 datums
• Fast zero reset
– • Sorting and tolerance checking
• Minimum/maximum display in a measurement series
Axis error compensation Linear or multipoint over 64 compensation points
–
Data interface RS-232-C/V.24 BCD
Data transfer rates 110 to 38400 Baud –
Switching outputs − • Zero crossover
for tasks in automation • Switching point 1
• Switching point 2
• Tolerance signal “<”
• Tolerance signal “>”
• Malfunction
Switching inputs − • Zero reset
for tasks in automation • Preset
• Measured value output, display
freeze if necessary (pulse or contact)
• External MIN/MAX selection
• MIN display
• MAX display
• DIFF display
• Start measurement series
• Pass over reference mark
• Inhibit reference pulse
Power source 100 V to 240 V (–15% to +10%), 50 Hz to 60 Hz (± 2 Hz);
power consumption 8 W
Operating temperature 0° C to 45° C (32° to 113° F)
Protection (EN 60529) IP 40, front panel IP 54
Weight 1.5 kg (3.3 lb)
16
Convenient Datum Setting
on Milling Machines
150
43
Ř16 h6
Ř30
Ř25
Ř6
LED
50
p. 10
p. 12
Accessory: KT edge finder
The KT is a 3-D triggering edge finder. The
cylindrical stylus is spring-mounted in the
edge finder housing. When the stylus
contacts the workpiece, it is deflected and
a trigger signal is sent over the connecting
cable to an ND or POSITIP.
The KT edge finder allows you to set the
datum quickly and easily, without leaving
marks on the workpiece.
Datum setting with the tool
The probe functions can also be carried out
with the tool. This is particularly relevant
for the ND 710 and ND 750, which do not
have a connection for an edge finder.
Easy setup with probing functions
A very useful accessory for datum setting
is the HEIDENHAIN KT edge finder: Simply
move the edge finder toward a side of the
workpiece until the stylus deflects. The
counter automatically stores the exact
position, taking into account the direction
of approach and the radius of the stylus.
The milling machine displays
• ND 720, ND 760
• POSITIP 880
support the edge finder with the features
• Workpiece edge as datum
• Workpiece centerline as datum
• Circle center as datum
17
Convenient Datum Setting
on Lathes
p.12
Determining and storing tool
compensation values
With the ND 730, ND 770 (9 tools) and the
POSITIP (99 tools) displays, you can store
the dimensional data for the tools you
insert in the turret or quick-change holder:
• Enter the tool position directly when
turning the first diameter, or
• “Freeze” the current axis display value,
retract the tool, measure the turned
diameter and then enter that value.
Changing datums
If you change the workpiece or the
workpiece datum, you can fix the new
datum without having to change the stored
tool-offset values. The tool data are
automatically referenced to the new
datum.
18
Radius/diameter display
All lathe displays show the X-axis positions
as either radius or diameter values. You
can switch between displays using a
keystroke.
Sum display of longitudinal axes
The ND 770 and POSITIP lathe displays
can display the positions of the saddle and
the top slide either separately or as the
sum of both values.
• If you select separate displays, the
position values are referenced to the
datum for each individual axis. If only the
saddle is moved, the displayed
value for the top-slide axis remains
unchanged.
• If sum display is selected, the counter
adds both values. You can now read the
absolute position of the tool in relation to
the workpiece datum – without having to
calculate!
Taper turning made easy
If taper dimensions do not include the
angle, POSITIP or the ND 730/ND 770 will
help with the calculations. Simply enter the
taper ratio or the two diameters and the
length. POSITIP and ND 730/ND 770 will
immediately display the correct angle for
the top slide.
Features for Working with Lathes
p. 10
Multipass cycle
The POSITIP display unit features a cycle
for turning a shoulder in several passes.
The distance remaining to the target
position is shown both in the longitudinal
and tool axes. You decide on the best
infeed increment.
19
Automatic calculation of bolt hole
patterns for milling and drilling
With the milling machine displays series
ND 700 and POSITIP you can produce bolt
hole circles (full circles and circle
segments) without a rotary table or linear
hole patterns (rows or areas) without
manual calculation.
Simply enter the geometric dimensions and
the number of holes from the drawing, and
the display calculates the coordinates of
the individual holes in the working plane.
You need only traverse “to zero” and
drill—the display then shows you the next
position.
The POSITIP also has a particularly
useful feature: a graphic display of the
programmed bolt-hole pattern lets you
verify your input before machining.
Fast and Accurate Hole Patterns and
Rectangular Pockets
p. 10
p. 12
p. 10
Hole 1
CLIMB
Milling and roughing-out rectangular
pockets
The POSITIP aids you in milling and
roughing-out rectangular pockets. The
display unit calculates from your input the
required positioning steps, and you
simply traverse to the zero position value.
20
Distance-to-go display for turning
and milling
The distance-to-go display feature of
the ND 700 series and POSITIP simplifies
your work considerably. You enter the next
nominal position, and the display shows
you the distance remaining to the target
position. You simply traverse to
the display value zero.
The displays for milling can also
compensate the cutter radius. You can
machine your parts directly from the
drawing dimensions without having to do
any calculations, and there’s no need to
remember complicated numbers.
Easy Positioning with
the Distance-To-Go Display and Contour Monitoring
Oversize Z
Oversize X
p. 10
POSITIP:
Contour monitoring for overseeing
manual 2-D operations
Specially conceived for 2-D milling and
turning work, the contour monitoring
feature shows you whether the tool is still
within the position tolerances that you
have chosen. The magnify function makes
this possible even for relatively narrow
tolerances while a second window provides
an overall view.
POSITIP’s distance-to-go display
With POSITIP, offsets can be taken into
consideration when turning. Simply enter
the offset value and traverse to the display
value zero using distance-to-go.
On POSITIP, the distance-to-go display
is enhanced by a graphic positioning aid:
As you traverse to zero, a square
cursor moves into a target fork. If you
prefer (e.g. for turning), POSITIP can show
the absolute position value instead of the
graphic.
21
POSITIP’s programming functions allow
you to save repetitive machining steps.
Thus for example you can save all of the
machining sequences required for a smallbatch
workpiece as a program. In the
programming mode of operation, the
distance-to-go display will guide you stepby-
step to the programmed positions.
Programs can be created either by keying
them in step-by-step or generating them
through actual position capture (teach-in
programming).
POSITIP also allows you to generate
program-section repeats and subprograms.
If you are machining point patterns, you
can program incremental positioning steps
and then repeat them as often as
necessary (program-section repeat). If you
need to run the same program sequence at
separate locations on the workpiece, you
can write a subprogram and call it as
needed. Both techniques save you time
and reduce the chance of incorrect entries.
In addition, fixed cycles such as Bolt Hole
Circle, Linear Hole Pattern or Rectangular
Pocket (boring, milling) or Multipass
(turning) keep your programs short and
save you programming time. In the course
of your work, POSITIP presents each
nominal position in the proper sequence.
You need only move from one position to
the next.
Programming Functions:
Small-Batch Production Made Easy
p. 10
Example of a POSITIP program:
Multiple-recess turning on
one workpiece
HEIDENHAIN has a wide range of linear
encoders to suit any application—for
different display steps, installation spaces
and traverse lengths.
The housing of the linear encoder is
mounted onto the movable slide, and
the mounting block is screwed onto the
machine element that is stationary relative
to the measured axis. Thus, the linear
encoder measures the exact position of an
axis directly at the axis slide. As a result,
backlash in machine transfer elements,
They Determine the Accuracy:
HEIDENHAIN Linear Encoders
Scanning unit
Aluminum
housing
Mounting block
DIADUR scale
Sealing lips Adapter cable
DIADUR scale
Scanning unit
Mounting block
p .24
spindle and gears has no effect on the
measuring result, and spindle pitch error is
not reflected in the measured position
display.
The precision of the scale is the determining
factor for the accuracy of the measurement:
HEIDENHAIN linear encoders
incorporate accurate scales or scale tapes.
The scanning unit travels on a low-friction
guide within the scale housing. It is connected
to the external mounting block
through a coupling that compensates the
axial misalignment due to wear.
Coupling
p. 25
p. 26
Robust design for years of service
HEIDENHAIN linear encoders are robust,
vibration-resistant and durable.
The LS and LB linear encoders are sealed
with an aluminum housing and flexible
sealing lips at the bottom. This effectively
protects them from chips, swarf, dirt and
splashwater.
The photoelectric scanning of the LS and
LB scales is a contact-free process,
rendering the scales less subject to wear.
The electrical wiring runs through the
connecting web to the mounting block,
then through a metal-armored cable with
plastic cover to the display.
23
Reference marks
The reference marks on the scale are
required so that the display can show the
correct position values after any intentional
or unintentional interruption in power. With
HEIDENHAIN digital readouts the procedure
is very simple: by traversing the
reference mark once in every axis you reestablish
the assignment of display values
to axis positions according to the datum as
it was last defined. To save you having to
traverse possible long distances after
switch-on, HEIDENHAIN offers distancecoded
reference marks on both LS and LB
scales: after a maximum traverse of
20 mm (LS) or 80 mm (LB) in any direction
the display value is automatically referenced
to the last valid datum. Especially on
machines with large traverses, this feature
can bring you significant savings in time
spent reproducing the datum points.
Datum setting
To set the datum, you must move the axes
to some known point, such as a corner of
the workpiece, from which all dimensions
are to be measured. You then set the
display values to zero or otherwise enter
the values of the known position to define
the assignment of display values to axis
positions.
p. 16
24
Incremental Linear Encoders
for Measuring Lengths up to 3040 mm (120 in.)
LS 303
• Slimline scale housing for limited installation
space
• Accuracy grade better than ± 10 µm per
meter traverse
For typical applications on manual machine
tools such as milling machines or lathes,
display steps of 10 µm or 5 µm are
sufficient. Such display steps are provided
by the LS 303 and LS 603 linear encoders
with an accuracy grade of better than
± 10 µm per meter traverse.
Jig boring machines, grinding machines,
and measuring and inspection tasks
normally require display steps of 1 µm
and better. Linear encoders for these more
stringent requirements typically feature
accuracy grades of ± 5 µm per meter
traverse.
For limited installation space, for example
on the slide of a lathe, the LS 303 and
LS 406 slimline linear encoders may be
the best solution. They are available in
measuring lengths up to 1240 mm (48 in.).
When mounted with a back-up spar,
these encoders are also available for
measuring lengths up to 2040 mm (80 in.)
and permit higher acceleration.
The LS 603 and LS 106 with full-sized scale
housing function as universal linear encoders
under normal mounting conditions
for measuring lengths up to 3040 mm
(120 in.).
LS 406
• Slimline scale housing for limited installation
space
• Accuracy grade better than ± 5 µm
or ± 3 µm per meter traverse
• Defined thermal behavior
LS 603
• Universal linear encoder for normal
mounting conditions
• Accuracy grade better than ± 10 µm per
meter traverse
• Horizontal mounting possible
LS 106
• Universal linear encoder for normal
mounting conditions
• Accuracy grade better than ± 5 µm
or ± 3 µm per meter traverse
• Horizontal mounting possible
• Defined thermal behavior
LS 303 without mounting spar
LS 406 with mounting spar
25
LS 303 LS 406 LS 603 LS 106
Scale housing Slimline Full size
Accuracy grade ± 10 µm ± 5 µm or ± 10 µm ± 5 µm or
± 3 µm to ML 1240 ± 3 µm
Measuring standard Glass scale with DIADUR graduation; grating period 20
µm
Measuring lengths ML in mm
Reference marks LS 303, LS 406 LS 603, LS 106
Selectable by magnet every 50 mm; Selectable by magnet every 50 mm;
Standard setting: Standard setting:
ML 70 mm: One reference mark at midpoint of
One reference mark at midpoint of ML; measuring length
up to ML 1020 mm: LS 603C, LS 106C
Two, each 35 mm from beginning/end; Distance-coded; for finding the
absolute
from ML 1140 mm: position value after max. 20 mm traverse
Two, each 45 mm from beginning/end;
LS 303C, LS 406C
Distance-coded; for finding the
absolute position value after
max. 20 mm traverse
Max. traversing speed 120 m/min (4720 ipm) 60 m/min (2362 ipm) 120 m/min
(4720 ipm)
Vibration IEC 60068-2-6 (55 to 2000 Hz) 100 m/s2 without mounting spar
30 m/s2 200 m/s2
200 m/s2 with mounting spar
Shock IEC 60068-2-27 (11 ms) 300 m/s2 200 m/s2 400 m/s2
Required moving force 5 N 10 N 4 N
Type of protection IEC 60529 IP 53 when mounted as per instructions
IP 64 with compressed air
Operating temperature 0 to 50 °C (32 to 122 °F)
Weight 0.4 kg + 0.4 kg/m ML 0.7 kg + 2 kg/m ML 0.2 kg + 2.6 kg/m ML
Power supply 5 V ± 5 % < 100 mA
Output signals 11 µAPP; signal period 20 µm
Electrical connection Separate adapter cable (1 m/3 m/6 m/9 m)
with or without armor (see Cables and Pin Layouts)
Permissible cable length 30 m (98.5 ft) max.
to subsequent electronics
70, 120, 170, 220, 270, 320, 370, 420,
470, 520, 570, 620, 720, 770, 820, 920,
1020, 1140, 1240,
Only with mounting spar:
1340, 1440, 1540, 1640, 1840, 2040
170, 220, 270, 320,
370, 420, 470, 520,
570, 620, 720, 770,
820, 920, 1020
140, 240, 340, 440,
540, 640, 740, 840,
940, 1040
1140, 1240, 1340, 1440, 1540, 1640, 1740,
1840, 2040, 2240, 2440, 2640,
2840, 3040
26
Incremental Linear Encoders
for Large Traverses
LIM 501
• For large measuring lengths
up to 28 m (92 ft)
• Accuracy grade better than ± 100 µm
per meter traverse
• For limited installation space
On large boring or milling machines, but
also on lathes with long Z axes, traverse
ranges can extend three meters and more.
HEIDENHAIN has the proper linear encoders
for such special applications.
The LB 302 universal linear encoder with
full-size scale housing is designed for
accuracy better than ± 5 µm per meter
measuring path for display steps of 10 µm,
5 µm and 1 µm. In measuring lengths from
440 mm to 3040 mm it is supplied a singlesection,
complete encoder. For measuring
lengths from 3240 mm to 30 040 mm, the
housing is assembled from sections and
the single steel scale tape is then pulled
into its slot.
The LIM 501 magnetic linear encoder is
intended for reduced accuracy requirements,
such as on the Z axes of lathes.
It permits a display step of 10 µm at an
accuracy of better than ± 100 µm per
meter traverse. Measuring lengths up to
2040 mm are available as single-section,
complete units. For larger measuring
lengths up to 28 040 mm, the housing is
assembled on the machine from sections
and a single scale tape is inserted.
LB 302
• For large measuring lengths
up to 30 m (100 ft)
• Accuracy grade better than ± 5 µm
per meter traverse
• Defined thermal behavior
• With linear machine error compensation
• Two mounting positions
27
LB 302 LIM 501
Scale housing Full size Slimline
Accuracy grade (per meter traverse) ± 5 µm ± 100 µm
Measuring standard Stainless steel strip with AURODUR Magnetized plastic
layer on
graduation; grating period 40 µm steel support tape
coefficient of thermal expansion: grating period 10.24 mm
therm 10 ppm/K
Measuring length ML in mm 440 mm to 3040 mm 440 mm to 2040 mm
in 200 mm steps Single-section encoders, complete Single-section scale
3240 mm to 30040 mm 2240 mm to 28040 mm
Kit with single-section AURODUR Kit with single-section scale tape
scale tape and housing sections
Reference marks LB 302 Every 10.24 mm by magnets
Every 50 mm by selector plates;
Standard setting:
One reference mark at midpoint
LB 302C
Distance-coded; for finding the absolute
position value after max. 80 mm traverse
Max. traversing speed 120 m/min (4720 ipm) 600 m/min (23 620 ipm)
Vibration IEC 60068-2-6 (55 to 2000 Hz) 300 m/s2 200 m/s2
Shock IEC 60068-2-27 (11 ms) 300 m/s2
Required moving force 15 N
Protection IEC 60529 IP 53 when installed as per instructions IP 64
IP 64 with compressed air
Operating temperature 0 to 50 °C (32 to 122 °F)
Weight 1.8 kg + 3.3 kg/m ML 0.25 kg + 0.375 kg/m ML
Power supply 5 V ± 5 % < 100 mA 5 V ± 5 % < 150 mA
Output signals 11 µAPP; signal period 40 µm 11 µAPP; signal period 10.24
mm
Electrical connection Separate adapter cable (1 m/3 m/6 m/9 m) Cable (3
m) with metal armor tubing
connectable to mounting block and connector
(see Cables and Pin Layout)
Permissible cable 30 m (98.5 ft) max.
length to subsequent
electronics
28
Digital readouts from HEIDENHAIN
provide greater ease of operation in your
production. That means user friendliness
that, aside from the greater convenience,
also increases your productivity—both on
standard machine tools and in very special
applications:
• You machine parts according to the data
given on the drawing, without calculations.
Why? Because you can choose
whether to work with incremental or
absolute dimensions, with several
datums if necessary, in millimeters or
inches.
• You can read the exact tool position at all
times. This reduces machine idle time
while preventing scrap and reworking.
Better, Faster, More Efficient
= 2 months
Return on investment within a few months
Example: Milling machine with 3 axes
• Cost of HEIDENHAIN linear encoders and ND 700 display, including
installation:
U.S. $2500 (approx.)
• Increase in production and profit: Min. 20 %
• Hours of operation: 160 h/month
Machine cost per hour: $40/hour
Saving in production costs: 20 % . $40 . 160 h = $1280
100 % h month per month
Payback period: $2500
$1280/month
29
Example
This workpiece was machined both
conventionally with vernier scales and
with a HEIDENHAIN digital readout. Both
operations were timed. The digital readout
enabled a 20% reduction in machining
time.
30
Incremental Length Gauges from HEIDENHAIN:
Measuring Equipment for the Workshop
Quality of the finished workpieces is
guaranteed
The HEIDENHAIN METRO MT length
gauges are characterized by high accuracy:
± 0.2 µm (for traverses of 12 mm and
25 mm), ± 0.5 µm (for traverses of 60 mm)
or ± 1 µm (for traverses of 100 mm). An
individual calibration chart is included with
each length gauge. Thus a reference to the
national standard is guaranteed and the
length gauges can be used for certification
of the finished workpieces.
The CT 2500 length gauges (25 mm
traverse) and CT 6000 (60 mm traverse)
from the HEIDENHAIN CERTO program
are available for the increased accuracy of
± 0.1 µm.
Incremental length gauges from HEIDENHAIN
offer high accuracy over long measuring
ranges. They feature well-thought-out
design characteristics in sturdily made
models for industrial use.
They have a wide range of applications in
production metrology, in multipoint inspection
stations, measuring equipment and as
position measuring devices.
Fast on-site inspection
Installing inspection apparatus near your
machine means that you will be able to
monitor changes on your machine—caused
by tool wear or thermal expansion—and
react to correct them on time. Because of
the large traverse ranges and the simple
use of the length gauges as well as the
accurate and clear digital displays,
HEIDENHAIN length gauges are an optimal
choice for universal, fast and accurate
measurements at your machining location.
31
ured value with an upper and a lower
limit value previously entered via the
keyboard. The result of the evaluation
(whether the measured value is below,
above or within tolerance) is indicated in
the status display with different symbols.
In addition, a corresponding signal
is available at the switching outputs.
• The measuring results can be output to a
printer for documentation purposes or a
PC for further processing via the
RS-232-C/V.24 data interface.
p. 14
With their small dimensions and measuring
ranges of 12 mm or 30 mm and ± 1 µm
accuracy, the HEIDENHAIN SPECTO
length gauges are specifically designed for
multipoint inspection devices.
The measured value displays of the
ND 200 series are suitable for typical
applications in quality assurance.
• Checking the dimensional accuracy of
workpieces is simple with the sorting
and tolerance check function. The
display unit compares the current meas-
Further information
For more detailed product information, see
our Length Gauges brochure.
32
Cable
Connecting cable PUR 8 mm
[3(2 x 0.14 mm2) + (2 x 1.0 mm2)]
Complete with 309774-xx
coupling (female) and connector (male)
Complete with 309775-xx
metal armor
coupling (female) and connector (male)
Complete with 368172-xx
coupling (female) and D-sub connector
(female)
With one coupling 309780-xx
(female)
With one connector 309776-xx
(male)
Cable only 244955-01
For ND 700 and ND 200 LS 106, LB 302 LS 303, LS 406 LS 603
Adapter cable with connector (male) 310130-xx 310125-xx 310573-xx
Cable length 1 m/3 m/6 m/9 m
Cable diameter 6 mm
310129-xx 310124-xx 310731-xx
Cable length 1 m/3 m/6 m/9 m Cable length 1 m/3 m/6 m
Cable diameter 10 mm
Adapter cable with metal armor,
with connector (male)
Connecting element on encoder Cnnctr. (male), 9-pin
For encoder cable 4.5 mm 291697-02
6 mm 291697-03
Mating element on connecting cable Coupling (female),
to the encoder connector, 9-pin
For connecting cable 8 mm 291698-01
Connector on connecting cable Cnnctr. (male), 9-pin
to subsequent electronics
For connecting cable 8 mm 291697-04
For PT 880 LS 106, LB 302 LS 303, LS 406 LS 603
368178-xx 368179-xx –
Cable length 1 m/3 m/6 m/9 m
Cable diameter 6 mm
– 367321-xx 368605-xx
Cable length 1 m/3 m/6 m/9 m Cable length 1 m/3 m/6 m
Cable diameter 10 mm
Adapter cable with metal armor,
with D-sub connector (female)
Adapter cable with D-sub connector
(female)
Dimensions
Position Display Units
POSITIP 880 ND 700 Series
ND 200 Series
Dimensions
in mm
Tilting base for PT 880
Tilting base for ND 700
34
LS 303
Mounting spar
ML m
70 ... 520 0
570 ... 920 1
1020 ... 1340 2
1440 ... 1740 3
1840 ... 2040 4
= Reference mark position on LS 303
= Reference mark position on LS 303C
= Beginning of measuring length (ML)
Two reference marks for measuring lengths
70 ... 1020 1140 ... 2040
z = 35 mm z = 45 mm
zi = ML – 70 mm zi = ML – 90 mm
Dimensions
in mm
= Scanning unit with permanent cable
= Scanning unit, cable connectible
= Without mounting spar
= With mounting spar
F = Machine guideway
P = Gauging points for alignment
= Required mating dimensions
= Compressed air inlet
= Without mounting spar
= With mounting spar
F = Machine guideway
P = Gauging points for alignment
= Required mating dimensions
= Compressed air inlet
LS 406
Mounting spar
ML m
70 ... 520 0
570 ... 920 1
1020 ... 1340 2
1440 ... 1740 3
1840 ... 2040 4
= Reference mark position on LS 406
= Reference mark position on LS 406C
= Beginning of measuring length (ML)
Two reference marks for measuring lengths
70 ... 1020 1140 ... 2040
z = 35 mm z = 45 mm
zi = ML – 70 mm zi = ML – 90 mm
Dimensions
in mm
36
LS 603
= Mounting options
F = Machine guideway
P, Q = Gauging points for alignment
= Required mating dimensions
= Compressed air inlet
= Reference mark position on LS 603
= Reference mark position on LS 603C
= Beginning of measuring length (ML)
Dimensions
in mm
37
= Mounting options
F = Machine guideway
P = Gauging points for alignment
= Required mating dimensions
= Compressed air inlet
= Reference mark position on LS 106
= Reference mark position on LS 106C
= Beginning of measuring length (ML)
LS 106
Dimensions
in mm
= Mounting options
F = Machine guideway
= Required mating dimensions
= Compressed air inlet
= Reference mark position on LB 302
= Reference mark position on LB 302C
= Beginning of measuring length (ML)
= Housing section lengths
(available lengths 1000, 1200,
1400, 1600, 1800, 2000)
LB 302 up to 30040 mm measuring length (multi-section housing)
Dimensions
in mm
39
= Single-section housing
= Multi-section housing
= Mounting options
F = Machine guideway
= Required mating dimensions
= Assembled from housing sections
(available lengths 1000, 1200,
1400, 1600, 1800, 2000)
= Reference mark position
= Beginning of measuring length (ML)
LIM 501
Dimensions
in mm
D Cable
4.5 Without armor
10 With armor
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