HEIDENHAIN ND 520 User Manual

HEIDENHAIN

Working with the position display units

ND 520 ND 560 NDP 560

For two axes For three axes For panel mounting

Actual value and input display

(7-segment LED, 8 decades with
sign); top to bottom: X axis,
Y axis, ND 560 / NDP 560 only:
Z axis

• Select coordinate axis

(Z axis only with ND 560 and NDP 560)

• Select axis-specific operating parameters

Numeric keypad
and decimal point

1

REF

HEIDENHAIN

Status indicators

2

in. SCL

• Select datum

• Page backward in
parameter list

X

7

4

Y

1

Z

1

0

2

SPEC

CL

FCT

• Clear entry

• CL plus two-digit number:
select parameter

• Clear parameter entry

MOD

9

8

5

6

3

2

ENT

• Sign

• Change parameter

Confirm entry

• Call operating
parameters

• Page forward in
parameter list

Datum setting

Indicator Meaning

REF Reference mark crossed over – datum points are now stored in

nonvolatile memory.
Blinking: Waiting for confirmation from operator.

1 / 2 Datum point 1 / Datum point 2 currently active

in. Position values displayed in inches

SCL Scaling factor active

→→

→

→→

Set workpiece edge as datum.
Blinking: Waiting for confirmation from operator.

←←

→→

←

→

←←

→→

Set centerline between two workpiece edges as datum.
Blinking: Waiting for confirmation from operator.

The ND 520, ND 560 and NDP 560 are designed for use with HEIDENHAIN linear
encoders with sinusoidal output signals.

The linear encoders have one reference mark or several (preferably distance-coded)
reference marks. When a reference mark is crossed over, a signal is generated which
identifies that position as a reference point.

After switch-on, crossing over the reference marks restores the relationship between
axis slide positions and display values last established by datum setting. With
encoders which have distance-coded reference marks, this requires a traverse of no
more than 20 mm.

Switch-On

Turn on the power

➤ Switch on the display unit with the power switch on the rear panel.

The display shows and REF blinks.

Switch on reference mark evaluation

➤ Press ENT.

The display shows the value last assigned to the reference mark position.

REF glows and the decimal point blinks.

Cross over the reference mark in each axis

➤ Move the axes one after the other until the display becomes active and the

decimal point glows steadily.

The display unit is now ready for operation.
If you do not wish reference mark evaluation, press CL instead of ENT.

Datum Setting

The datum setting procedure assigns a specific axis
position to the associated display value.

You can set two separate datum points and switch
from one to the other with the touch of a key. Use
datum 2 when you want to display incremental
dimensions.

➤ Select the datum.
➤ Select the coordinate axis in which the tool

moves (for example, the X axis).

➤ Touch the workpiece with the tool.
➤ Enter the position of the tool center using the

numeric keypad (for example, X = –5 [mm]). A

minus sign cannot be entered until at least one
digit is in the display.

➤ Press ENT.

This stores the value for the tool position.

Follow same procedure for the other axes.

Touching the workpiece

Z

Y

X

Datum Setting with an Edge Finder

The special functions of your display unit enable you to use a HEIDENHAIN KT edge
finder to set a workpiece edge or the centerline between two workpiece edges as a

datum. The position displays take into account the edge finder diameter which you
entered in operating parameter P25.

If you are using the NDP 560 (which has no edge finder input) or if you want to use
the special functions with a tool, please see the instructions on the next page.

Workpiece edge as datum

➤ Select the datum.
➤ Press the SPEC FCT key once.

The indicator "Workpiece edge as datum" blinks.

➤ Press ENT.

The indicator glows steadily.

➤ Select the coordinate axis in which the tool

moves. The selected axis glows more brightly.

➤ Probe the workpiece with the edge finder until

the LEDs in the edge finder light up and the
display shows the position of the workpiece edge.

➤ Enter the new coordinate value for the probed

edge.

➤ Press ENT.

The workpiece edge is set to the new value, and the display shows the position of
the edge finder relative to the new datum.

This function ends automatically.

Z

Y

Workpiece edge as datum

X

X?

Centerline between two workpiece edges as datum

➤ Select the datum.
➤ Press the SPEC FCT key twice. The indicator

"Centerline as datum" blinks.

➤ Press ENT.

The indicator glows steadily.

➤ Select the coordinate axis in which the tool

Z

moves. The selected axis glows more brightly.

➤ Probe the workpiece with the edge finder until

the LEDs in the edge finder light up and the

Y

decimal point blinks.

➤ Probe the second workpiece edge with the edge

finder until the LEDs in the edge finder light up

X?

and the display shows the position of the
centerline. The decimal point glows steadily.

➤ Enter the new coordinate value for the

centerline.

Centerline as datum

➤ Press ENT.

The centerline is now set to the new value and the display shows the position of
the edge finder relative to the new datum.

This function ends automatically.

To cancel the datum setting function:

➤ When the indicator for the function is blinking: press CL
➤ When the indicator for the function is glowing steadily: press SPEC FCT

X

Datum Setting with a Tool

It is also possible to probe the workpiece with a tool instead of the edge finder. The
functions for datum setting then differ as follows:

• The tool diameter is automatically taken into account during probing

• The position of the probed workpiece edge is not automatically stored.
Tool diameter:

➤ Enter the tool diameter in operating parameter P25.
To store the position of the workpiece edge when the tool is touching the edge:
➤ Press ENT.

Working with Scaling Factors

The ND 510 and the ND 550 can display the axis traverse lengthened or shortened
by a scaling factor. You enter a scaling factor separately for each axis in the user
parameter P12, then activate the scaling factor function with the user parameter
P11. SCL is highlighted.

Error Messages

Message Cause and effect

Traverse distance with datum setting function (SPEC FCT) is
too short

Incorrect input value

Encoder signal too weak (encoder may be contaminated)

Input frequency too high for encoder input
(will occur for example when traverse speed too high)

Encoder signal to strong

Internal counter overflow

Error while crossing over reference marks

To clear the error message: Switch off the display unit.
Should any of these error codes recur,
contact your HEIDENHAIN service agency.

Offset compensation values for encoder signals have been
erased: contact your service agency.

Compensation values for nonlinear axis error compensation have
been erased

Datums have been erased

Erase the operating parameters.

If all decimal points light up, the measured value is too large or too small.
Set a new datum.

To clear error message :

When you have removed the cause of the error,

➤ press CL.

Non-linear Error Compensation

To work with the non-linear error compensation it is necessary to

• activate the function via the operating parameter P40.

• traverse the reference marks after switching on.

• enter the compensation values in the table.
For every axis compensation values can be entered over 16 compensation points. To
determine the compensation values with a comparator system from HEIDENHAIN,
such as VM 101, you must select the REF display.

Selecting the Compensation Value Table

➤ Select the operating parameter P00 and enter the code number 105 296. Use

the following keys for the entries:

Key Function
MOD Save input value and select next input parameter.

1 / 2 Save input value and select preceding input value.

SPEC FCT Select REF display.
ENT • Save entry.

• Exit compensation value table.

CL • Delete entry.

• Delete all compensation values.

➤ Enter the parameters and compensation values as follows:

Display Entry

Enter the axis to be compensated, e.g. X.
Enter the axis causing the error, e.g. X, i.e. X = F(X).
Enter the datum on the axis causing the error.

Enter the distance of the compensation points on the error­causing axis, e.g. 14 (= 2

14

µm = 16.384 mm).
Minimum input value: 10 (= 1.024 mm)
Maximum input value: 23 (= 8388.608 mm)

Select compensation point No. 1. The compensation point
number can be seen while pressing the MOD key. After letting
go of the MOD key the coordinates of the selected compensation
point can be seen in the upper line. Enter the compensation value
in the lower line.

Enter all following compensation points.

Delete all compensation values:

Display Entry

Press key CL.
Press key ENT. Compensation values are deleted.

Operating Parameters

User ParametersUser Parameters

User Parameters

User ParametersUser Parameters
User parameters are operating parameters that can be changed
the codes: P00 to P25

Axis assignment
Axis-specific parameters (those requiring separate entries for each axis) have axis

1

codes:

The axis code is separated from the parameter number by a point.
In the operating parameter list, these parameters are set off with a superscript "A" and
the parameter for the X axis is given (e.g., ).
You select axis-specific operating parameters with the orange axis keys.

To access the operating parameters:

➤ Press MOD

To go directly to an operating parameter:

➤ Press and hold CL and press the first digit of the parameter number
➤ Release both keys and enter the second digit of the parameter number

To page through the operating parameters:

➤ Page forward: press MOD
➤ Page backward: press 1 / 2

To change a parameter setting:

➤ Change the setting with the minus key, or
➤ Enter the desired value directly, e.g. for P25

for the X axis, 2 for the Y axis, and 3 for the Z axis.

Any changes made are automatically activated when you resume paging.

withoutwithout

without entering

withoutwithout

To correct an entry:

➤ Press CL

To exit the operating parameters:

➤ Press ENT

This activates all changes you made.

Operating Parameter List

Parameter Meaning Function / Effect Setting

Code Number 95148: protected operating parameter

105296: select compensation value table
Unit of Dimensions in mm
measurement Dimensions in inch

Radius-/diameter Radius

A

display
Scaling factor Scaling factor active

Scaling

Scaling factor AEnter a value for each axis separately

Tool diameter Enter the tool diameter

Tool

Diameter

Scaling factor inactive

0,1 ≤ P12 ≤ 9,999 999

0 ≤ P25 ≤ 199,999 [mm]

Operating Parameter List – cont'd.

Parameter Meaning Function / Effect Setting

Counting Normal (
direction

A

Inverse (

Signal period of the encoder [µm]

(

Period

:) 2, 4, 10, 20, 40, 100, 200, 12 800

Subdivision of the encoder signals A (

Direction: Positive
Direction: Negative

A

Subdivision

)

)

:)

128, 100, 80, 64, 50, 40, 20, 10, 5, 4, 2, 1, 0.8, 0.5, 0.4, 0.2, 0.1

Select Error compensation not active
error Linear error compensation active
compensation Non-linear error compensation active

A

Compensation

Linear error compensation1)

– 99 999 < P41 < + 99 999 [µm/m]

Reference One reference mark

A

marks

Distance-coded with 500 • SP

(SP =signal period)

Distance-coded with 1000 • SP

(e.g. for LS 303 C / LS 603 C)

Distance-coded with 2000 • SP

Distance-coded with 5000 • SP

Encoder

Encoder Monitoring off
monitoring
Axis display

(

Axis

A

Monitoring on

A

Display measured position

) Do not display measured position /

(Alarm Off)

(Alarm On)

no encoder

Function of the Reset to zero with CL
CL key No reset to zero with CL

1)

Entry value for P41
Example: Displayed measuring length: Ld = 620.000 mm

Display step, signal period and subdivision for linear encoders

Display step P31: Signal period [µm]

[mm] [inches] P32: Subdivision

0.000 02 0.000 001 100 –––––– –

0.000 05 0.000 002 40 80 ––––– –

0.000 1 0.000 005 20 40 100 –––– –

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 –

0.1 0.005 ––0.1 0.2 0.4 1 2 128

0.2 0.01 ––––––– 64

Actual length (as determined with a comparator system such as the VM 101 from
HEIDENHAIN): La = 619.876 mm
Length difference: ∆L = La – Ld = –124 µm

Compensation factor: k = ∆L / Ld = –124 µm / 0.62 m = –200 [µm/m]

2 2

4 4

2

4

2 2

4 4

1010

10

1010

2020

20

2020

4040

40

4040

100100

100

100100

200200

200

200200

1212

12

1212

800800

800

800800

Parameter Settings for HEIDENHAIN Linear Encoders

Display step
Model and signal
period [µm]

LIP 40x 2 one single 0.001 0.000 05 2

LIP 101 A 4 one single 0.001 0.000 05 4
LIP 101 R 0.000 5 0.000 02 8

LIF 101R 4 one single 0.001 0.000 05 4
LIF 101 C dist. cod. 5000 0.000 5 0.000 02 8

LIF 401 one single 0.000 2 0.000 01 20
LIF 401 C dist. cod 5000 0.000 1 0.000 005 40

LID xxx/LID xxx C 10 one/dist.cod. single/2000 0.001 0.000 05 10
LS 103/LS 103 C 10 one/dist.cod. single/1000 0.000 5 0.000 02 20
LS 405/LS 405 C 0.000 2 0.000 01 50
ULS/10 0.000 1 0.000 005 100

LS 303/LS 303 C 20 one/dist.cod. single/1000 0.01 0.000 5 2
LS 603/LS 603 C 0.005 0.000 2 4

Reference
marks

P43

(unit: P01)

mm inches

0.000 5 0.000 02 4

0.000 2 0.000 01 10

0.000 1 0.000 005 20

0.000 05 0.000 002 40

0.000 02 0.000 001 100

0.000 2 0.000 01 20

0.000 1 0.000 005 40

0.000 05 0.000 002 80

Subdi­vision,
P32

LS 106/LS 106 C 20 one/dist.cod. single/1000 0.01 0.000 5 2
LS 406/LS 406 C 0.005 0.000 2 4

LS 706/LS 706 C 0.002 0.000 1 10
ULS/20 0.001 0.000 05 20

0.000 5 0.000 02 40

LIDA 10x 40 one/dist.cod. single/2000 0.002 0.000 1 20
LB 302 0.001 0.000 05 40

0.000 5 0.000 02 80

LIDA 2xx 100 one single 0.01 0.000 5 10
LB 3xx 0.005 0.000 2 20

LB 3xx C dist. cod. 1000 0.002 0.000 1 50

0.001 0.000 05 100

LIM 102 12800 one single 0.1 0.005 128

s

Example: Linear encoder with signal period

a

Desired display step

Subdivision P32

Linear measurement with ballscrew and rotary encoder

If you are measuring linear distance with a ballscrew and rotary encoder, calculate
the signal period as follows:
Signal period s =

Screw pitch [mm] • 1000

Line count

= 0.005 mm

= =

= 0.001

= =

••

• s / a = 4

••

= 20 µm

[µm]

ND 520/ND560: Rear Panel

Inputs for HEIDENHAIN linear encoders

(ND 520: 2, ND 560: 3)

with sinusoidal output signals

(7µA

to 16 µApp),

Connecting cable max. 30 m (98.5 ft),

pp

Input frequency max. 100 kHz

Power switch

Edge finder input

Interfaces X1, X2, X3 and X10 comply with the recommendations in
EN 50 178 for separation from line power.

NDP 560: Front and Rear Panel

X

Y

Z

1

2

CL

2

1

REF

in. SCL

9

7

8

5

6

4

3

1

2

0

SPEC

MOD

ENT

FCT

X 2 X 1

X 3

X 10

Ground terminal

Front panel dimensions [mm]
259+0.5 x 198.5+0.5

Mounting depth min. 140 mm

HEIDENHAIN

PGM
XXXX

X1

X2

X3

Inputs X1 to X3 for HEIDENHAIN
linear encoders with sinusoidal
output signals (see above)

Ground terminal

X51

N

L1

Power connection

ND 520/ND 560: Installation

The display unit can be mounted on a flat
surface or on the tilting base from
HEIDENHAIN (Id.-Nr. 281 619 01) with M4
screws.

93+2

3.66+.08"

20

.79"

43.3

1.704"

92

3.622"

0

21±0.2

1±.008"

4

M

Power Supply and Connection

Danger of electrical shock!

Unplug the power cable before opening the housing.
Connect a protective ground. This connection should never be interrupted.

Danger to internal components!

Do not engage or disengage any connections while the unit is under power.
Use only original replacement fuses.

Primary-clocked power supply.

Voltage range 100 V to 240 V (–15% to +10 %), Frequency 48 Hz to 62 Hz,
Power consumption ND 520: 9 W, ND 560 and NDP 560: 12 W,
Line fuse F 1 A (in unit).

Minimum cross-section of power cable: 0.75 mm

2

56±0.2

2.204±.008"

29+0.5

1.14+.02"

230±0.2

209±0.2

8.228±.008"

9.055±.008"

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

Power connection – ND 520 and ND 560

The ND 520 and ND 560 have a socket on the rear panel for the power cable.

Power connection – NDP 560

The NDP 560 has a terminal (X 51) on the rear
panel for the power connection.

X 51

N

L1

Ambient Conditions

Temperature range Operation: 0°C to +45°C (32°F to +113°F)

Storage: –30°C to +70°C (–22°F to +158°F)

Rel. humidity Annual average: < 75%; maximum: < 90%
Weight 2.5 kg

DR. JOHANNES HEIDENHAIN GmbH

Dr.-Johannes-Heidenhain-Straße 5

D-83301 Traunreut, Deutschland

86

69) 31-0 . 56831

(0

FAX

86

69) 50 61

(0
Service (0 86 69) 31-12 72

TNC-Service (0

FAX

(0 86 69) 98 99

288 391 23 · SW 246 180 05 · 3 · 10/97 · H · Printed in Germany · Subject to change without notice

86

69) 31-14 46

2

)