HEIDENHAIN ND 200: 4 Installation

Installation Instructions

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ND 200

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4 Installation

NOTICE

Disturbances caused by lack of grounding or improper

grounding!

Never operate the unit without proper ground

connection.

Connect the ground connector on the rear panel to

the central grounding point of the unit.

Minimum cross section of the conductor: 6 mm

2

.

NOTICE

Risk of damage to internal components!

Do not engage or disengage any connecting elements

while the unit is under power.

Depending on the unit's equipment, the

installation may differ from the procedure

described in this chapter. If the Addendum

shipped with the product contains information

on the installation, the information given in

the Addendum takes precedence over the

information in this chapter.

The safety of any system incorporating the

use of this product is the responsibility of the

assembler or installer of the system.

The illustrations of pin layouts always show the

pin assignments of the connections on the unit,

and not of the connectors.

Personnel requirement

The following steps are only to be performed by

qualified personnel!

For more information: see "Personnel

qualification", page 16.

4.1 Product overview

Rear panel

See Figure "A" on the front fold-out page. The figure

shows the rear of the ND 287. The ND 287 and ND 280 are

identical in their design, except for the additional connection

possibilities provided by the ND 287, which are listed below.

1

Power switch

2

Power connector

3

Line fuse

4

Ground

X1

15-pin D-sub connection for HEIDENHAIN

encoder with

11 µA

PP

 interface or 1 V

PP

 interface or EnDat interface (purely serial)

Only ND 287 (option)

:

Replacing the encoder module by an analog

module for connection of an analog sensor

X31

Serial 9-pin D-sub connection RS-232-C/V.24

for data transmission

X32

Serial USB connection type B (UART) for da-

ta transmission

Only ND 287:

X41

25-pin D-sub connection for switching in-

puts and outputs

X2

Option: Addition of an expansion module

(as for connection X1)

X26(X27)

Option: Addition of an Ethernet expansion

module (100baseT) for network connection

via TCP/IP protocol

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Installation Instructions

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4.2 Connecting the line voltage WARNING

Risk of electric shock!

Improper grounding of electrical devices involves a risk of

serious injury or death by electric shock.

Always use 3-wire power cables.

Make sure the ground wire is correctly connected to

the ground of the building's electrical installations.

WARNING

A risk of fire exists if a power cord not meeting minimum

specifications is used!

Use only power cables that fulfill or exceed the

specified minimum requirements.

Use the supplied power cable to connect the power

connection to a 3-wire grounded power outlet. For

information about the location of the power connection

on the rear panel, see "Rear panel", page 20

4.3 Electrostatic discharge NOTICE

This product contains components

that can be destroyed by electro-

static discharge (ESD).

It is essential to observe the safety

precautions for handling ESD-sensiti-

ve components.

Never touch connector pins without

ensuring proper grounding.

4.4 Connecting encoders Connections

Encoders are connected to the encoder inputs X1 (X2)

provided on the rear panel. For information on the location

of the connections, see "Rear panel", page 20.

The number and type of connections available for encoders

may vary depending on the type of unit.

Connecting the encoder cables

Connect the cables of the encoders tightly to the

respective connections on the rear panel.

If the cable connectors include mounting screws, do not

overtighten them.

Vacant pins or wires must not be used.

Pin layout X1 (X2)

For pin layout for 11 µA

PP

, 1 V

PP

 and EnDat 2.1, see "H" in

the Appendix.

Only ND 287: For pin layout if an analog module is being

used, see "M" in the Appendix.

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4.5 Connecting computers and printers

The unit provides two serial interfaces for bidirectional data

communication:

X31: 9-pin RS-232-C/V.24 D-sub interface

X32: USB interface (UART)

You can use only one serial interface for data

transfer at a time.

Software updates can only be transferred to the

unit via the USB interface X32.

Connecting computers or printers via the RS-232-C/V.24

interface

A computer or a printer with a serial RS-232-C/V.24 data

interface can be connected to connection X31.

Use a serial cable (see "Accessories", page 19) to

connect the COM port of the computer or printer to

connection X31. For information on the location of the

connections, see "Rear panel", page 20.

Make sure the cable is securely attached. Do not

overtighten the connector screws.

RS-232-C/V.24: Pin layout X31

The wiring of the connecting cable depends

on the device being connected (see technical

documentation for external device).

Pin layout:

With handshake: See Figure 1 in "I" in the Appendix.

Without handshake: See Figure 2 in "I" in the Appendix.

For signal level, see "Specifications", page 24.

Connecting a computer via USB

A computer can be connected to connection X32 via the

USB interface.

Connect the USB port of the computer to connection

X32 using a USB cable (see "Accessories", page 19). For

information on the location of the connections, see "Rear

panel", page 20.

USB Type B (UART): Pin layout X32

For pin layout, see "J" in the Appendix.

4.6 Only ND 287: Wiring of switching inputs and outputs

The wiring of the switching inputs and outputs depends

on the customer's peripherals (see manufacturer's

documentation).

Personnel requirement

Depending on the peripherals to be connected,

the connection work may need to be carried out

by an electrical specialist.

Example: SELV exceeded.

Connection X41

Functional assignment of the 25-pin D-sub connection

(I = switching input, O = switching output):

Pin Function

1

0 V

2

I Reset, clear error message

3

I Set axis / coupled axes to value for datum point

4

I Ignore reference mark signals (X1)

5

I Start series of measurements / f(X1,X2) display

6

I Externally select display value for series of measure-

ments / X1 display

7

I Display minimum value of series of measurements /

X2 display

8

I Display maximum value of series of measurements /

X1+X2 display

9

I Display difference Max-Min of series of measure-

ments / X1-X2 display

10

0 V

11

Vacant

12

Do not assign

13

Do not assign

14 O Display value is zero

15 O Measured value is greater than or equal to trigger li-

mit A1

16 O Measured value is greater than or equal to trigger li-

mit A2

17 O Measured value is less than the lower sorting limit

18 O Measured value is greater than the upper sorting li-

mit

19 O Error

20

Vacant

21

Vacant

22 I Pulse: Measured value output,

see Figure 1 in "L" in the Appendix

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Pin Function

23 I Contact: Measured value output,

see Figure 1 in "L" in the Appendix

24 I Ignore reference mark signals (X2, optional)

25 I Enable or disable REF mode (current REF status is

changed)

For pin layout, see "L" in the Appendix.

Switching inputs for measured value output

See Figure 1 in "L" in the Appendix.

The respective switching input is active when a Low signal

U

L

 is applied (contact or pulse to 0 V).

Input signals: Signal Value

Internal

pull-up resistor

1 k

Ω

, active Low

Activation

Trigger by making contact against

0 V or by low-level signal over TTL

logic device

Delay time for

preset/reset

t

V

 ≤

 2 ms

Minimum pulse du-

ration for all signals

(except for pin 22

and pin 23)

t

min

 ≥

 30 ms

For signal level of inputs, see "Specifications", page 24.

Open-collector outputs

See Figure 2 in "L" in the Appendix.

The unit features open-collector outputs that switch to 0 V

(= active Low).

Output signals: Signal Value

Open-collector out-

puts

Active Low

Delay until signal out-

put

t

V

 ≤

 20 ms

Signal duration of ze-

ro crossover, trigger

limit A1, A2

t

0

 ≤

 180 ms

For signal level of outputs, see "Specifications", page 24.

4.7 Only ND 287: Installing optional expansion modules

For information on the location of the slots, see "Rear

panel", page 20.

Installing expansion modules

See "D" on the front fold-out page.

1

2

Ethernet expansion module

Analog module or encoder module

Switch the unit off and disengage the power plug.

Loosen the Torx screws of the selected input.

Remove the cover from the slot, or remove any module

that might be inserted.

Insert the new input assembly.

Re-tighten the Torx screws: 

Tightening torque 1.5 Nm.

Connecting connectors

Connect the connector tightly to the respective

connection on the rear panel.

X1, X2: If the connectors include mounting screws, do

not overtighten them.

X26(X27): Insert the terminal of the RJ-45 connector so

that it engages.

Pin layouts

X1, X2: For connection of analog module, see "M" in the

Appendix.

X1, X2: For connection of the 11 µA

PP

/1 V

PP

 /EnDat 2.1

module, see "H" in the Appendix.

X26(X27): For connection of the Ethernet module, see

"K" in the Appendix.

Vacant pins or wires must not be used.