HEIDENHAIN ND 730 User Manual v.1

User’s Manual

Position Display Units
for Lathes

6/ 99

Position display

(ND 730 only two axes)

• Select coordinate axis
(ND 730 only X and Z)

• Select axis-based operating parameters

Status display:

SET = Set datum
REF = Blinking:

Traverse reference
marks
Lighting:
Reference marks have
been traversed

= Distance-to-go

∆

Inch= Inch display
SCL = Scaling factor

R = Radius/diameter

display

T = Tool selected

HEIDENHAIN

••

• Tool compensation

••

• Scroll backwards in special functions
list

• Scroll backwards in parameter list

Numerical input

• Change sign

• Call last dialog

• In parameter list:
Change parameter

• Confirm entry

• Scroll forwards in parameter list

Select radius/diameter display
in X axis

• Select special functions

• Scroll forwards in special
functions list

• Abort entry

• Reset operating mode

• Reset selected axis to zero

(if activated via P 80)

• Select parameter:

CL plus two-digit number

This manual is for ND display units with the following
software numbers or higher:

Part I Operating Instructions

ND 730 for two axes AA00
ND 770 for three axes AA00

About this manual!

This manual is divided into two parts:

Part I: Operating Instructions:

• Fundamentals of positioning

• ND functions

Part II: Installation and Specifications:

• Mounting the display unit on the machine

• Description of operating parameters

Fundamentals 4
Switch-On, Reference-Mark Traverse 10
Selecting Radius or Diameter Display 11
Separate Value/Sum Display

(only ND 770) 12
Datum Setting 13

Setting the absolute workpiece datum 13
Entering tool data (relative datums) 14

Holding Positions 15
Moving the Axes with Distance-To-Go 17
Taper Calculator 19
Error Messages 23

Part II
Installation and Specifications 25

Part I Operating Instructions

3

Fundamentals

You can skip this chapter if you are already familiar with
coordinate systems, incremental and absolute dimensions,
nominal positions, actual positions and distance-to-go!

Coordinate system

Fundamentals

To describe the geometry of a workpiece, a rectangular or
coordinate system is used. The Cartesian coordinate system consists
of three mutually perpendicular axes X, Y and Z. The point of
intersection of these axes is called the datum or origin of the
coordinate system.

Think of the axes as scales with divisions (usually in millimeters) that
allow us to fix points in space referenced to the datum.

To determine positions on a workpiece, the coordinate system is
“laid” onto the workpiece.

With lathe work (i.e. rotationally symmetrical workpieces), the Z axis
moves along the axis of rotation, and the X axis moves in the direction
of the radius or diameter. The Y axis can be disregarded since it would
always have the same values as the X axis.

Cartesian

+Y

+Z

Graduation

+X

1)

–X

–Z

Datum or
origin

–Y

X

Z

1)

Named in honor of the French mathematician and philosopher

4

René Descartes (1596 to 1650)

Cross slide, saddle and top slide

Z

Z

O

X

+Z

+X

+Z

O

On conventional lathes, the tool is mounted on a slide that moves in
the direction of the X axis (the cross slide) and in the direction of the Z
axis (the saddle).

Most lathes have a top slide above the saddle. The top slide moves in
Z axis direction and is designated Zo.

Fundamentals

5

Datum setting

The workpiece drawing is used as the basis for machining the
workpiece. To enable the dimensions in the drawing to be converted
into traverse distances of machine axes X and Z, each drawing
dimension requires a datum or reference point on the workpiece
(since a position can only be defined in relationship to another
position).

Fundamentals

The workpiece drawing always indicates one absolute datum (the
datum for absolute dimensions). However, it may contain additional,
relative datums.

In the context of a numerical position display unit,

datum setting

means bringing the workpiece and the tool into a defined position in
relation to each other and then setting the axis displays to the value
which corresponds to that position. This establishes a fixed
relationship between the actual positions of the axes and the
displayed positions.

With the ND, you can set one absolute datum point and as many as
9 relative datum points (tool datums), and store them in nonvolatile
memory.

3530

Relative
datum

Absolute
datum

Z

5

10

X

6

Tool datums (tool compensation)

Your display unit should show you the absolute position of the
workpiece, regardless of the length and shape of the particular tool
being used. For this reason you must determine the tool data and
enter it. First touch the workpiece with the cutting edge of the tool
and then enter the associated display value for that position.

You can enter tool data for up to 9 tools. When you have set the
absolute workpiece datum for a new workpiece, all tool data (= relative
datum points) are referenced to the new workpiece datum.

Fundamentals

Nominal position, actual position and distance-to-go
The positions to which the tool is to move are called the nominal

S

positions (
given moment is called the actual position (I).

The distance from the nominal position to the actual position is called
the distance-to-go (

Sign for distance-to-go

When you are using the distance-to-go display, the nominal position
becomes the relative datum (display value 0). The distance-to-go is
therefore negative when you move in the positive axis direction, and
positive when you move in the negative axis direction.

). The position at which the tool is actually located at any

).

R

R

T1

T2

IS

T3

Z

X

7

Absolute workpiece positions

Each position on the workpiece is uniquely defined by its absolute
coordinates.

Example Absolute coordinates of position

:

1

X = 5 mm
Z = –35 mm

Fundamentals

If you are working according to a workpiece drawing with absolute
dimensions, you are moving the tool to the coordinates.

Relative workpiece positions

A position can also be defined relative to the previous nominal
position. The datum for the dimension is then located at the previous
nominal position. Such coordinates are termed relative coordinates or
chain dimensions. Incremental coordinates are indicated by a
preceding I.

65

35

0

Z

1

5

15

X

Example Relative coordinate of position referenced to

position

1

:

2

3530

IX = 10 mm
IZ = –30 mm

If you are working according to a workpiece drawing with incremental
dimensions, you are moving the tool by the dimensions.

Sign for incremental dimensioning
A relative dimension has a positive sign when the axis is moved in the

1

2

Z

5

10

X

positive direction, and a negative sign when it is moved in the

8

negative direction.

Position encoders

The position encoders on the machine convert the movements of the
machine axes into electrical signals. The ND display unit evaluates
these signals, determines the actual position of the machine axes and
displays the position as a numerical value.

If the power is interrupted, the relationship between the machine axis
positions and the calculated actual positions is lost. The reference
marks on the position encoders and the REF reference mark
evaluation feature enable the ND to quickly re-establish this
relationship again when the power is restored.

Reference marks

The scales of the position encoders contain one or more reference
marks. When a reference mark is crossed over, a signal is generated
identifying that position as a reference point (scale datum = machine
datum).

When this reference mark is crossed over, the ND's reference mark
evaluation feature restores the relationship between axis slide
positions and display values as you last defined it by setting the
datum. If the linear encoders have distance-coded reference marks,
you need only move the machine axes a maximum of 20 mm to
restore the datum.

Workpiece

Scale in linear
encoder

Z

Fundamentals

Encoder

Distance-coded
reference marks

Reference mark

9

Switch-On, Reference-Mark Traverse

0 è 1

ENT ... CL

ENT

Crossing over the reference marks stores the last relationship
between axis slide positions and display values for all datum points in
nonvolatile memory.

Switch-On, Reference-Mark Traverse

Note that if you choose not to cross over the reference marks (by
clearing the dialog ENT ... CL with the CL key), this relationship will be
lost if the power is switched off or otherwise interrupted!

You must cross over the reference marks if you want to use
the multipoint axis error compensation function.
(See “Multipoint Axis Error Compensation”)

Turn on the power (switch located on rear panel).
REF is blinking in the status display.

Confirm reference-point traverse.
REF is now lighting. Decimal points are blinking.

Cross over the reference marks in all axes (in any
sequence). Each axis display becomes active when
its reference mark is crossed over.

10

Selecting Radius or Diameter Display

Your ND can display positions in the cross slide as a diameter or as a
radius. Drawings of lathe parts usually indicate diameters. When you
are turning the part, however, you infeed the tool in the cross slide
axis in radius values.

Example: Radius display position  X = 20 mm

Diameter display position  X = 40 mm

To switch the display:

Press

¬

Z

¯40

1

20

X

When radius display for the X axis is selected, R
When diameter display is selected, R

goes out.

X

lights up.

X

Selecting Radius or Diameter Display

11

Separate Value/Sum Display (ND 970 only)

Separate value display

In this mode the positions of the saddle and top slide are displayed
separately. The position displays are referenced to the datum points
that you set for the Zo and Z axes. When an axis slide moves, only the
position display for that axis changes.

Sum display

In this mode the position values of both axis slides are added together.
The sum display shows the absolute position of the tool, referenced to
the workpiece datum.

Z

40

Z

0 +10 +25

Z

Z

0

Example Separate value display: Z = +25.000 mm

Sum display: Z

The sum display will only show correct values if the actual
position values of both axis slides were correctly added and
entered (with sign) when setting the datum for the “sum.”

To switch the display

Separate Value/Sum Display (ND 770 only)

➤ Sum display: Press the keys Zo and Z at the same time.
➤ Separate value display: Press the key Zo.

When the ND 770 displays sums, the Zo display is switched
off.

12

Zo = +15.000 mm

= +40.000 mm

S

Z

0

Ð10

0 +15

Datum Setting

•If you want datum points to be stored in nonvolatile memory,
you must first cross over the reference marks.

•Note that the correct value to be entered for the datum in the
X axis depends on whether you have selected radius or
diameter display.

With the ND 730/ND 770 position displays, you can set one absolute
workpiece datum and data for up to 9 tools (relative datums).

Setting the absolute workpiece datum

When you enter a new value for the absolute workpiece datum, all tool
data are then based on the new workpiece datum.

Touch the workpiece end face with the tool.

Z=0

Z

Datum Setting

Z

ENT

0

Enter further axes in the same way.

Select the axis, SET begins to blink

Enter the position of the tool tip, e.g. 0 mm.
Confirm with ENT.

13

Entering tool data (relative datums)

3

Datum Setting

SPEC

SPEC

FCT

TOOL SET

Z

14

FCT

Touch the workpiece or turn the first
diameter.

Select the axis (for example X), enter the

ENT

ENT

Select tool, T begins to blink.

Enter tool number, e.g. 3,
and confirm with ENT.

X

0

2

position of the tool tip (for example

Touch the workpiece with the tool.

20 mm), and confirm with ENT.

To set additional tools, change the tool,
select a new tool number and enter the

Select Special Functions.

Select the Tool Set function.

ENT

The decimal point beside "T" and

SPEC

FCT

or

data for the next tool.

End the function.

the decimal points beneath it begin
to blink.

ENT

0

Select the axis (for example Z), enter the
position of the tool tip (for example
0 mm), and confirm with ENT.

•

•

•

When you work with the sum display, also set the
tool data when the sum display is active (ND 770
only)!

Holding Positions

If you want to measure the workpiece after turning the first diameter,
your display unit has to capability to “freeze” (hold) the actual position
before you retract the tool.

?

Z

SPEC

FCT

SPEC

FCT

POS. HOLD

e.g.

X

•

•

•

Turn the first diameter, for example in the X axis.

Select Special Functions.

Select the Hold Position function.

Select the axis whose position is to be held and

ENT

confirm with ENT.

Retract the tool. The X axis display remains
stopped. Measure the workpiece.

?

1

X

Holding Positions

2

15

e.g.

SPEC

FCT

1

or

ENT

2

Holding Positions

Enter the measured position, for example 12 mm,
and confirm with ENT. The display shows the
current tool position.

End the function.

16

Moving the Axes with the Distance-To-Go Display

Normally, the display shows the actual position of the tool. However, it
is often more helpful to display the remaining distance to the nominal
position (distance-to-go). You can then position simply by moving the
axis until the display value is zero.

Application example: Finish turning a shoulder by traversing to zero

Select Special Functions.

Select Delta Mode.

SPEC

FCT

SPEC

FCT

or

DELTA MODE

Confirm the distance-to-go, ∆ lights up.

Select the axis, e.g. X, enter the nominal

ENT

coordinate, e.g. 15 mm (radius), confirm with ENT.

X

ENT

5

1

Move the X axis until the display value is zero.
The tool is at position 1.

•

•

•

20

2

3

0

Z

1

15

5

X

Moving the Axes with Distance-To-Go

17

X

0

2

Z

ENT

2

0

Select the axis, e.g. Z, enter the nominal
coordinate, e.g. –20 mm, and confirm with ENT.

Move the Z axis until the display value is zero.
The tool is at position 2.

Select the axis, enter the nominal coordinate,

ENT

e.g. 20 mm (radius), confirm with ENT.

Move the X axis until the display value is zero.
The tool is at position 3.

Moving the Axes with Distance-To-Go

SPEC

FCT

or

and

End the distance-to-go mode.

ENT

The ∆ symbol goes out.

18

Taper Calculator

The taper calculator enables you to calculate the angle for the top
slide. There are two possibilities:

• Calculation from the taper ratio:

- Difference between the taper radii to the length of the taper

1:3

• Calculation from two diameters and the length:

- Starting diameter

- Final diameter

- Length of the taper

Calculation from the taper ratio

SPEC

FCT

SPEC

FCT

Select Special Functions.

Select Taper Calculator.

TAPER CALC.

ENT

Confirm function.

•

•

•

Taper Calculator

19

TAP. RATIO

ENT

1. VALUE

ENT

Taper Calculator

1

2. VALUE

ENT

3

ANGLE = 18.435

Confirm function.

Enter the first value, e.g. 1, and confirm with ENT

Enter the second value, e.g. 3, confirm with ENT
(length of taper is three times as large as radius
difference).

The result is displayed in the message field.

20

SPEC

FCT

or

End the taper calculator.

You can change entered values later by selecting them with
the ENT key or the TOOL key.

Calculation from two diameters and the length

SPEC

FCT

SPEC

FCT

TAPER CALC.

ENT

TAP. RATIO

TAP. DIMENS.

ENT

•

•

•

Select Special Functions.

Select Taper Calculator for input of diameters and
length.

Confirm function.

Select Taper Dimensions function.

Confirm function.

20

30

10

Taper Calculator

21

DIA. RIGHT

01

DIA. LEFT

Taper Calculator

2 0

LENGTH

3 0

ANGLE = 9.462

SPEC

or

FCT

You can change entered values later by selecting them with
the ENT key or the TOOL key.

22

ENT

ENT

ENT

Enter value, e.g. 10 mm, confirm with ENT.

Enter value, e.g. 20 mm, confirm with ENT.

Enter value, e.g. 30 mm, confirm with ENT.

The result is displayed in the message field.

End the taper calculator.

Error Messages

Message Cause and Effect

SIGNAL X The encoder signal is too weak.

The scale may be contaminated.

ERR. REF. X The spacing of the reference

marks as defined in P43 is not
the same as the actual spacing.

FRQ. ERR. X The input frequency for this

encoder input is too high. This
can occur when the scale is
moved too fast.

ERR. MEMORY Checksum error!

Check the datum, operating
parameters and compensation
values for multipoint axis-error
compensation. If this error recurs,
contact your service agency.

To clear error messages

When you have removed the cause of the error:
➤ press the CL key.

Error Messages

23

Part II Installation and

Specifications

Items Supplied 26
Connections on Rear Panel 27
Mounting 28
Power Supply 28
Connecting the Encoders 29
Operating Parameters 30

Entering/changing operating parameters 30
Operating parameter list 31

Linear Encoders 33

Setting the display step 33
Display step, signal period and subdivision 33
Compatible HEIDENHAIN linear encoders 34

Multipoint Axis Error Compensation 36

Input in compensation value table 36
Selecting compensation value table,
entering axis error values 37
Deleting compensation value table 38

Specifications 39

Dimensions ND 730/770 40

Part II Installation and Specifications

25

25

Items Supplied

• ND 730 for 2 axes
or

• ND 770 for 3 axes

• Power connector Id. Nr. 257 811-01

Items Supplied

• User's Manual

Optional Accessories

• Tilting base for mounting on underside of housing
Id. Nr. 281 619-01

26

Connections on Rear Panel

ID label

Power switch

Power input

Connections X1, X2, X3 meet the regulations for safe
separation from line power according to EN 50178!

Ground terminal

Encoder inputs X1 to X3

Connections on Rear Panel

Rubber feet with M4 thread

27

Mounting

H

E

ID

E

N

H

A

IN

To mount the display unit on a support, use the M4 threaded holes in
the rubber feet. You can also mount the display unit on the optional
tilting base.

Power Connection

Power Connection/Mounting

N

Hot leads and
Protective ground

L

• Danger of electrical shock!
Connect a protective ground. This connection must
never be interrupted.

• Unplug the power cord before opening the housing.

To increase the noise immunity, connect the ground terminal
on the rear panel to the central ground point of the machine
(minimum cross-section: 6 mm

2

).

Tilting base

Support

28

The display unit will operate over a voltage range of 90 Vac to 260 Vac.
A voltage selector is not necessary.

Connecting the Encoders

Z Zo X

Your display unit will accept all HEIDENHAIN linear encoders with
sinusoidal output signals (7 to 16 µA
reference marks.

Assignment of the encoder inputs for the ND 730

Encoder input X1 is for the X axis
Encoder input X2 is for the Z axis

Assignment of the encoder inputs for the ND 770

Encoder input X1 is for the X axis
Encoder input X2 is for the Zo axis
Encoder input X3 is for the Z axis

Encoder monitoring

Your display unit features a monitoring system for checking the
amplitude and frequency of the encoder signals. If it detects a faulty
signal, one of the following error messages will be generated:

SIGNAL X
FRQ. ERR. X

Encoder monitoring can be activated with parameter 45.
If you are using linear encoders with distance-coded reference marks,

the encoder monitoring system also checks whether the spacing of
the reference marks as defined in parameter P43 is the same as the
actual spacing on the scales. If it is not, the following error message
will be generated:

) and distance-coded or single

pp

Connecting the Encoders

ERR. REF. X

29

Operating Parameters

Entering/changing operating parameters

Operating parameters allow you to modify the operating
characteristics of your display unit and define the evaluation
of the encoder signals. Operating parameters that can be
changed by the user are called user parameters, and can be
accessed with the SPEC FCT key and the dialog PARAMETER
(user parameters are identified as such in the parameter list).
The full range of parameters can only be accessed via the
dialog "CODE" and input of the code number 95148.

Operating parameters are designated by the letter P and a

Operating Parameters

number. Example: P11. The parameter designation is shown
in the X display when a parameter is selected with the TOOL
and ENT keys.
The parameter setting is shown in the Z = ND 730/
Zo = ND 770 display.

Some operating parameters have separate values for each
axis. Such parameters have an additional index number from
1 to 3 with the ND 770 and from 1 to 2 with the ND 730.
Example: P12.1 scaling factor, X axis

P12.2 scaling factor Zo axis (only ND 770)
P12.3 scaling factor, Z axis

The operating parameters are preset before the unit leaves
the factory. These factory settings are indicated in the
parameter list in boldface type.

Calling operatingparameters

➤ Press the SPEC FCT key
➤ Press SPEC FCT or TOOL until "PARAMETER" is

displayed in X.

➤ Confirm with ENT.
➤ If you wish, use the TOOL key to select the dialog for

entering the code number 95148 to access the full
range of operating parameters.

Scrolling through the operating parameter list

➤ Scroll forwards: Press the ENT key.
➤ Scroll backwards: Press the TOOL key.

Changing parameter settings

➤ Press the minus key or enter the value and confirm

with the ENT key.

Correcting an entry

➤ Press CL. This restores the old value.

Exiting the operating parameters

➤ Press SPEC FCT or CL.

30

List of operating parameters

P1 Unit of measurement

1)

Display in millimeters MM
Display in inches INCH

P3.1 to P3.3 Radius/diameter display

1)

Display position value as radius RADIUS
Display position value as diameter DIAMETER

P11 Activate scaling factor

1)

Scaling factor active SCALING ON
Not active SCALING OFF

P12.1 to P12.3 Enter scaling factor

1)

Enter a scaling factor separately for each axis:
Entry value > 1: workpiece will “grow”
Entry value = 1: workpiece will remain the same size
Entry value < 1: workpiece will “shrink”
Input range: 0.111111 to 9.999999
Factory setting: 1

P30.1 to P30.3 Counting direction

Positive counting direction with
positive direction of traverse DIRECT. POS

Negative counting direction with
positive direction of traverse DIRECT. NEG

P32.1 to P32.3 Subdivision of the encoder signals

1024 / 1000 / 800 / 512 / 500 / 400 / 256 / 200
128 / 100 / 80 / 64 / 50 / 40 / 20 / 10 / 8 / 5 / 4 / 2 / 1 / 0.8 /

0.5 / 0.4 / 0.2 / 0.1

P33.1 to P33.3 Counting step

0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9
0 - 2 - 4 - 6 - 8
0 - 5

P38.1 to P38.3 Decimal places

1 / 2 / 3 / 4 / 5 / 6 (up to 8 with inches display)

P40.1 to 40.3 Define axis error compensation

Axis error compensation not active CORR. OFF
Linear axis error compensation active CORR. LIN
Multipoint axis error compensation active CORR. ABS
(See "Multipoint Axis Error Compensation")

Operating Parameters

1)

User parameter

31

P41.1 to P41.3 Linear axis error compensation

Linear axis error compensation is activated via parameters

40.1 to 40.3.
Input range
Default setting: 0

Example: Displayed length La = 620.000 mm

Operating Parameters

P43.1 to P43.3 Reference marks

One reference mark SINGLE REF.
Distance-coded with 500 • SP 500 SP
Distance-coded with 1000 • SP 1000 SP
Distance-coded with 2000 • SP 2000 SP
Distance-coded with 5000 • SP 5000 SP
(SP = signal period)

P44.1 to P44.3 Reference mark evaluation

Evaluation active REF. X ON
Evaluation not active REF. X OFF

[µm]: – 99999 to + 99999

Actual length (as determined for example with
the VM 101 from HEIDENHAIN)
La = 619.876 mm
Difference ∆L = La – Ld = –124 µm
Compensation factor k:
k = ∆L/Ld = –124 µm/0.62 m = –200 [µm/m]

P45.1 to P45.3 Encoder monitoring

Amplitude and frequency
monitoring active ALARM ON

Amplitude and frequency
monitoring not active ALARM OFF

P48.1 to P48.3 Activate axis display

Axis display active AXIS ON
Axis display not active AXIS OFF

P80 Function of CL key

Reset with CL CL...RESET

No reset with CL CL......OFF

P98 Dialog language
German LANGUAGE D

English LANGUAGE GB
French LANGUAGE F
Italian LANGUAGE I
Dutch LANGUAGE NL
Spanish LANGUAGE E
Danish LANGUAGE DK
Swedish LANGUAGE S
Finnish LANGUAGE FI
Czech LANGUAGE CZ
Polish LANGUAGE PL
Hungarian LANGUAGE H
Portuguese LANGUAGE P

1)

32

1)

User parameter

Linear Encoders

Setting the display step with linear encoders

The display step depends on the:

• Subdivision (P32)

• Counting step (P33)

• Decimal places (P38)

Example

Linear encoder with signal period 10 µm

Required display step .............. 0.000 5 mm

Subdivision (P32) ..................... 20

Counting step (P33) ................. 5

Decimal places (P38) ............... 4

The tables on this page and the next pages will help
you selecting your parameters.

Display step, signal period and subdivision for
linear encoders

Signal period [µm]
Display step 2 4 10 20 40 100 200 12 800
[mm] [inch] P32: Subdivision

0,000 005 0,000 000 2 400 –––––– –

0.000 01 0.000 000 5 200 –––––– –

0.000 02 0.000 001 100 –––––– –

0.000 05 0.000 002 40 80 ––––– –

0.000 1 0.000 005 20 40 100 200 ––– –

0.000 2 0.000 01 10 20 50 100 ––– –

0.000 5 0.000 02 4 8 20 40 80 –– –

0.001 0.000 05 2 4 10 20 40 100 ––

0.002 0.000 1 1 2 5 10 20 50 100 –

0.005 0.000 2 0.4 0.8 2 4 8 20 40 –

0.01 0.000 5 0.2 0.4 1 2 4 10 20 –

0.02 0.001 ––0.5 1 2 5 10 –

0.05 0.002 ––0.2 0.4 0.8 2 4 256

0.1 0.005 ––0.1 0.2 0.4 1 2 128

0.2 0.01 ––––––– 64

Linear Encoders

33

Parameter settings for HEIDENHAIN linear encoders with 11 µA

Model

CT

Linear Encoders

MT xx01
LIP 401A/401R

2

Reference
marks

Signal period

[µm]

P 43

single 0,0005

-/single

Millimeters Inches

Display
step [mm]

0,0002
0,0001
0,00005

Recommended only for LIP 401

0,00002
0,00001
0,000005

LF 103/103C
LF 401/401C
LIF 101/101C
LIP 501/501C
LIP 101

4

single/5000 0,001

0,0005
0,0002
0,0001

single

0,00005

Recommended only for LIP 101

0,00002
0,00001

MT xx 10 single 0,0005

0,0002
0,0001

LS 303/303C
LS 603/603C

20 single/1000 0,01

0,005

signals

PP

Subdi-

vision

Count

P 32 P 33 P 38

4
10
20
40

100
200
400

4
8
20
40
80

200
40021

20
50
100

2
4

5
2
1
5

2
1
5

1
5
2
1
5

5
2
1

1
5

Decimal

4
4
4
5

5
5
6

3
4
4
4
5

5
5

4
4
4

2
3

Display
step [inch]

places

0,00002
0,00001
0,000005
0,000002

0,000001
0,0000005
0,0000002

0,00005
0,00002
0,00001
0,000005
0,000002

0,000001
0,0000005

0,00002
0,00001
0,000005

0,0005
0,0002

Subdi-

vision

Count

P 32 P 33 P 38

4
10
20
40

100
200
400

4
8
20
40
80

200
40015

20
50
100

2
4

2
1
5
2

1
5
2

5
2
1
5
2

2
1
5

5
2

Decimal

5
5
6
6

6
7
7

5
5
5
6
6

6
7

5
5
6

4
4

places

34

Parameter settings for HEIDENHAIN linear encoders 11 µAPP (continued)

Signal period

Reference
marks

[µm]

P 43

single/1000

-

Millimeters Inches

Display
step [mm]

0,001
0,0005

0,005
0,002
0,001
0,0005

Subdi-

vision

Count

P 32 P 33 P 38

20
40

8
20
40
80

1
5

5
2
1
5

3
4

3
3
3
4

Decimal

Display
step [inch]

places

0,00005
0,00002

0,0002
0,0001
0,00005
0,00002

Model

LS 106/106C
LS 406/406C
LS 706/706C

ST 1201

LB 302/302C

LIDA 10x/10xC

20

40 single/2000

Recommended only for LB 302

0,0002
0,0001

LB 301/301C 100 single/1000 0,005

0,002
0,001

LIM 102 12800 single 0,1

0,05

Example:

Your encoder: LS 303 C, desired display step: 0,005 mm (5 µm), parameter settings: P01 = mm,
P43 = 1 000, P32 = 4, P33 = 5, P38 = 3

200
40021

20
50
100

128
25615

4
4

5
2
1

3
3
3

1
2

0,000001
0,0000005

0,0002
0,0001
0,00005

0,005
0,002

Subdi-

vision

Count

P 32 P 33 P 38

20
40

8
20
40
80

200
40015

20
50
100

128
25652

5
2

2
1
5
2

2
1
5

Decimal

5
5

4
4
5
5

5
6

4
4
5

3
3

places

Linear Encoders

35

Multipoint Axis Error Compensation

Entries in the compensation value table

If you want to use the multipoint axis error compen­sation feature, you must

• Activate this feature with operating parameter P40
(see "Operating Parameters")

• Traverse the reference marks after switching on the
display unit.

• Enter compensation value table

Your machine may have a non-linear axis error due to factors
such as axis sag or drivescrew errors. Such deviations are
usually measured with a comparator measuring system. This
allows you to determine, for example, the screw pitch error
[X = F(X)] for the X axis.

An axis can only be corrected in relation to one axis causing
the error. You can create a compensation value table for each
axis, with each table containing 16 compensation values.

Multipoint Axis Error Compensation

The compensation value table is selected with the SPEC FCT
key and the dialog "PARAMETER/CODE". All of the input
values required for the multipoint compensation are
requested via dialog.

To determine the compensation values (e.g. with a VM 101),
the REF display must be selected after selecting the
compensation-value table.

Select REF display.

36

• Axis to be compensated: X, Zo or Z
(Zo only ND770)

• Axis with error: X, Zo or Z
(Zo only ND770)

• Datum for the axis to be corrected:

Here you enter the point starting at which the axis with
error is to be corrected. This point indicates the absolute
distance to the reference point.

Do not change the datum point after measuring the
axis error and before entering the axis error into the
compensation table.

• Spacing of the compensation points

The spacing of the compensation points is expressed as

x

2

[µm]. Enter the value of the exponent

compensation value table.
Minimum input value: 6 (= 0.064 mm)
Maximum input value: 20 (= 1052.672 mm)

23 (= 8388.608 mm)

Example: 900 mm traverse and 15 compensation points:

results in 60.000 mm spacing between points.
Nearest power of two: 2
Entry in compensation value table: 16

• Compensation value

You enter the measured compensation value (in
millimeters) for the displayed compensation point.
Compensation point 0 always has the value 0 and
cannot be changed.

x

into the

16

[µm] = 65.536 mm

To select comp. value table and enter an axis correction

SPEC

FCT

SPEC

or

FCT

PARAMETER

ENT

CODE

1

0

5 2

6

9

AXIS X

ENT

X

X = FCT. X

ENT

X

Select Special Functions

Select the Parameter function if required,

by repeatedly pressing the TOOL key.

Select dialog for entering the code
number.

Enter 105296 and confirm with ENT.

ENT

Select the axis to be corrected, e.g. X,
confirm with ENT.

Enter the axis causing the error, e.g. X
(screw pitch error), confirm with ENT.

DATUM X

2

7

SPACING X

0

1

27.000

ENT

0

0

1

28.024

ENT

Enter the active datum for the error on

ENT

the axis to be corrected e.g. 27 mm, and
confirm.

Enter the spacing of the compensation

ENT

points on the axis to be corrected, e.g.

10

2

µm (equals 1.024 mm), and confirm.

Select compensation point no. 1, enter
the associated compensation value
e.g. 0.01 mm, and confirm.

ENT

Enter all further compensation points. If
you press the MINUS key, the number
of the current compensation point is
shown in the X display.

Multipoint Axis Error Compensation

SPEC

or

•

FCT

•

Conclude entry.

37

Deleting a compensation value table

Select Special Functions.

Select the Parameter function.

SPEC

FCT

SPEC

FCT

PARAMETER

ENT

Select the dialog for entering the code
numebr.

CODE

1

0

5

ENT

6

9

Enter105296 and confirm with ENT.

2

Multipoint Axis Error Compensation

AXIS X

Z

DELETE Z

ENT

Select the compensation value table,
e.g. for Z axis, and delete the table.

Confirm with ENT, or cancel with CL.

38

SPEC

FCT

or

Conclude entry.

Specifications

Housing ND 730/ND 770

Bench-top design, cast metal
Dimensions (W • H • D)
270 mm x 172 mm x 93 mm

Operating temp. 0° to 45° C (32° to 113° F)
Storage temp. –20° to 70° C (–4° to 158°F)
Weight Approx. 2.3 kg
Relative humidity <75% annual average

<90% in rare cases

Power supply 90 Vac to 260 Vac

48 Hz to 62 Hz

Power consumption 15 W
Protection IP40 according to EN 60 529

Encoder inputs For encoders with

7 to 16 µA
Grating period 2, 4, 10, 20, 40, 100,
200 µm and 12.8 mm
Reference-mark evaluation for
distance-coded and single reference
marks.

Input frequency Max. 100 kHz

with 30 m (66 ft) cable

Display step Adjustable

(see "Linear Encodes")

Tool datums 9 (nonvolatile)
Functions − Distance-to-go display

− Radius/diameter display

− Separate value/sum display

(only ND 770)

− Hold position

− Set absolute datum

− Taper calculator

− Scaling factor

PP

Specifications

39

Specifications

240

9.45"

56

2.205"

210 ± 0.2

8.268 ± .008"

15
.6"

8
.32"

4.5

.18"

120 + 0.5

4.73 + .02"

38 ± 0.5

1. 5

±

.02"

20

°

92

3.622"

4.5

.18"

Tilting baseDimensions in mm/inches

40

DR. JOHANNES HEIDENHAIN GmbH

Dr.-Johannes-Heidenhain-Straße 5

83301 Traunreut, Germany

{ +49/8669/31-0
| +49/8669/5061

e-mail: [e-mail]

{ Service
{ TNC-Service
|+49/8669/98

+49/8669/
+49/8669/

99

31-12 72
31-14 46

e-mail: [e-mail]

http://www.heidenhain.de

HEIDENHAIN (G.B.) Limited

200 London Road, Burgess Hill
West Sussex RH15 9RD, Great Britain

{ (0 1444) 24 7711
| (014 44) 8700 24

341 697-21 . SW AA00 . 15 . 7/2000 . F&W . Printed in Germany . Subject to change without notice