Leuze electronic TNT 35 Guida rapida

TNT 35

Test monitoring units

607112 - 2010/11

Subject to change wit-

hout prior notice

CONNECTING AND OPERATING INSTRUCTIONS

Original Instructions

2 TNT 35 und TNT 35/7-24V Leuze electronic

DEUTSCH ENGLISH FRANÇAIS ITALIANO ESPAÑOL NEDERLANDS

Notes on Connecting and Operating Instructions

This conecting and operating instructions manual contains information on the proper use of

test monitoring units TNT 35 and TNT 35/7-24V in accordance with its intended purpose.

All the information contained herein, in particular the safety notes, need to be carefully

observed.

Notes regarding safety and warnings are marked by this symbol .

Notes regarding important pieces of information are marked by the symbol .

This connecting and operating instructions manual must be stored carefully. It must be

available for the entire operating time of the test monitoring units TNT 35 and TNT 35/7-

24V.

The Leuze electronic GmbH + Co. KG is not liable for damages caused by improper

use. Acquaintance with these instructions is an element of the knowledge required

for proper use.

permission of

Leuze electronic GmbH + Co. KG

In der Braike 1

D-73277 Owen - Teck / Germany

Phone +49 (0) 7021 / 573-0

Fax +49 (0) 7021 / 573-199

[email protected]

www.leuze.com

Contents

Leuze electronic TNT 35 und TNT 35/7-24V 3

TNT 35/7-24V DEUTSCHENGLISHFRANÇAISITALIANOESPAÑOLNEDERLANDS

1 General Information...........................................................................................................5

1.1 Certifications ........................................................................................................................5

1.2 General Information .............................................................................................................5

1.3 Definition of Terms...............................................................................................................5

1.4 Selection of Optical Electronic Protective Devices...............................................................6

2 Safety ..................................................................................................................................8

2.1 Approved purpose and foreseeable improper operation......................................................8

2.1.1 Proper use............................................................................................................................8

2.1.2 Foreseeable misuse...........................................................................................................10

2.2 Competent personnel.........................................................................................................10

2.3 Responsibility for safety .....................................................................................................10

2.4 Exemption of liability ....................................................................................................................11

3 Mounting of the Safety System.......................................................................................12

3.1 Mounting of the Protective Photoelectric Sensor ...............................................................12

3.1.1 Multi-axle installation.......................................................................................................... 13

4 Function and Commissioning of the TNT 35.................................................................15

4.1 Function characteristics of the safety system ....................................................................15

4.1.1 Display and Operating Instruments....................................................................................15

4.2 Electrical Installation .......................................................................................................... 16

4.2.1 Supply wiring......................................................................................................................17

4.2.2 Start input wiring ................................................................................................................18

4.2.3 Wiring of single-beam protective photoelectric sensors.....................................................20

4.2.4 Wiring of single-beam protective photoelectric sensors in series ......................................21

4.2.5 Wiring safety output ........................................................................................................... 22

4.2.6 Wiring of the message outputs...........................................................................................25

4.2.7 Setting of the operating mode ............................................................................................26

4.3 Operating states without start- and restart-disable. .....................................................................28

4.4 Operating states with start- and restart-disable without relay monitoring (EDM) .........................31

4.5 Operating states with start- and restart-disable and with relay monitoring (EDM) .......................35

4.6 Fault indication and device reset........................................................................................38

4.7 Technical Data ................................................................................................................... 40

Contents

4 TNT 35 und TNT 35/7-24V Leuze electronic

DEUTSCH ENGLISH FRANÇAIS ITALIANO ESPAÑOL NEDERLANDS

5 Function and Commissioning of TNT 35/7-24V ............................................................ 42

5.1 Function characteristics of the safety system .................................................................... 42

5.1.1 Display and Operating Instruments.................................................................................... 43

5.2 Electrical Installation .......................................................................................................... 43

5.2.1 Supply wiring...................................................................................................................... 44

5.2.2 Sensor voltage supply........................................................................................................ 44

5.2.3 Start input wiring ................................................................................................................ 45

5.2.4 Wiring of single-beam protective photoelectric sensors..................................................... 47

5.2.5 Wiring of single-beam protective photoelectric sensors in series ...................................... 48

5.2.6 Wiring safety output ........................................................................................................... 49

5.2.7 Wiring of the message outputs .......................................................................................... 51

5.2.8 Setting of the operating mode............................................................................................ 52

5.3 Operating states without start- and restart-disable. ........................................................... 54

5.4 Operating states with start- and restart-disable without relay monitoring (EDM).........................57

5.5 Operating states with start- and restart-disable and with relay monitoring (EDM).......................61

5.6 Fault indication and device reset ....................................................................................... 64

5.7 Technical Data............................................................................................................................. 66

6 Applications ..................................................................................................................... 68

6.1 Example with retro-reflective photoelectric safety sensor SRK 96 .................................... 68

6.2 Example with a protective photoelectric sensor SLS 96 .............................................................70

6.3 Example with a protective light barrier ECO ................................................................................ 71

6.4 Example with a protective photoelectric barrier ROBUST ...........................................................72

6.5 Example of a TNT 35 with protective photoelectric sensor SLS 96 and

EMERGENCY SHUT-DOWN function......................................................................................... 73

6.6 Example of a TNT 35/7-24V with a retro-reflective photoelectric safety sensor SRK 96.............74

6.7 Example of a TNT 35/7-24V with two retro-reflective photoelectric safety sensors SRK 96 ....... 75

7 Appendix........................................................................................................................... 76

7.1 Remaining Risks (EN ISO 12100-1) .................................................................................. 76

8 EC Declaration of Conformity......................................................................................... 77

General Information

Leuze electronic TNT 35 und TNT 35/7-24V 5

TNT 35/7-24V DEUTSCHENGLISHFRANÇAISITALIANOESPAÑOLNEDERLANDS

1General Information

1.1 Certifications

The TNT 35 and TNT 35/7-24V monitoring units have been developed and manufactured

in accordance with the applicable European standards and directives.

The manufacturer of the product, Leuze electronic GmbH + Co. KG in D-73277 Owen -

Teck, possesses a certified quality assurance system in accordance with ISO 9001.

1.2 General Information

Note!

There are two device variations described in this connecting and operating instructions.

The difference between the two devices is in their supply voltage. The TNT 35 is intended

for 24V DC operation. The TNT 35/7-24V is intended for 24V AC operation. The basic

remarks concerning the functioning and assembly of the safety system are valid for both

device variations.

An active optoelectronic protective device is part of the electrical equipment which has to

be applied to those machines which contain the potential risk of bodily injury. They provide

protection by causing the machine to move into a safe operating state before a person can

get into a dangerous situation (EN 61496-1).

1.3 Definition of Terms

AOPD type 2

The EN 61496 describes two types of active optical electronic protective devices (AOPD)

with respect to the requirements concerning safety relevant parts of control units

(ISO 13849-1).

The AOPD type 2 fulfills the requirements of category 2 acc. to ISO 13849-1. A periodic

function test has to detect malfunctions in the safety function. In case of a failure, the next

machine cycle may not be released. A malfunction of the AOPD type 2 between the

testings can cause the loss of the safety function. In normal function, at least one output

switching element of the AOPD type 2 has to move into the OFF-position if the sensor

reacts or if the power supply of the AOPD is interrupted.

TÜV NORD CERT GmbH

Zertifizierungsstelle für Produktsicherheit

Benannte Stelle 0044

Langemarckstr. 20

45141 Essen

General Information

6 TNT 35 und TNT 35/7-24V Leuze electronic

DEUTSCH ENGLISH FRANÇAIS ITALIANO ESPAÑOL NEDERLANDS

Contactless active protective device (BWS)

Corresponds to AOPD

Output switching element (OSSD)

The part of the AOPD which is connected to the machine control and which moves into the

OFF-position as soon as the sensor part reacts during normal operation.

Start disable

An equipment which disables the automatic machine start if the power supply of the

contactless active protective device is switched on or if it had been interrupted and

switched on again.

Start testing

A manual or automatic test which is performed after the contactless active protective

device has been switched on. It tests the complete safety-relevant control system before

the normal machine operation is induced.

Muting

The intentional bridging of the safety function, e.g. during material transport into the

hazardous area.

Muting sensors

Muting sensors define between persons and transported material. If the muting sensors are

activated simultaneously or in the intended order, the safety function of the AOPD is

bridged. Material can be brought into the hazardous area without taking the machine out of

operation.

Relay monitoring

The relay monitoring checks before every release of the switching outputs if the succeeding

contactors are open. Only then, a new release is possible.

Restart-disable

A function which prevents an automatic restart of a machine after

• sensor detection during a potentially dangerous motion of the machine,

• a change in the operating mode of the machine and

• a change in the actuation mode of the machine.

1.4 Selection of Optical Electronic Protective Devices

The following strategy is to be applied (iterative process):

1. Determination of the protected area

2. Determination of the protective function

• Finger or hand protection

• Access protection for persons

• Presence detection

3. Determination of the control category

4. Calculation of the safety distance

General Information

Leuze electronic TNT 35 und TNT 35/7-24V 7

TNT 35/7-24V DEUTSCHENGLISHFRANÇAISITALIANOESPAÑOLNEDERLANDS

Determination of the protected area

Through risk calculation, the following has to be observed:

• the size of the safety field

• the access points

• the hazardous areas

• bypassing possibilities

Determination of the protective function:

Finger and hand protection: The user is close to the hazardous area.

Access protection: Access to the hazardous area is protected.

Presence detection: A hazardous area which is completely surrounded by per-

manently installed protective devices is monitored for pres-

ence of objects or access protection and presence

detection are combined.

Safety

8 TNT 35 und TNT 35/7-24V Leuze electronic

DEUTSCH ENGLISH FRANÇAIS ITALIANO ESPAÑOL NEDERLANDS

2 Safety

Before using the Test Monitoring Unit, a risk evaluation must be performed according to

valid standards (e.g. EN ISO 14121, EN ISO 12100-1, ISO 13849-1, IEC 61508,

EN 62061). The result of the risk assessment determines the required safety level of the

Test Monitoring Unit (see Table 2.1-1). For mounting, operating and testing, document

"TNT 35 Test Monitoring Units" as well as all applicable national and international

standards, regulations, rules and directives must be observed. Relevant and supplied

documents must be observed, printed out and handed to the affected personnel.

Before working with the Test Monitoring Unit, completely read and understand the

documents applicable to your task.

In particular, the following national and international legal regulations apply for the start-up,

technical inspections and work with Test Monitoring Units:

• Machinery directive 2006/42/EC

• Low voltage directive 2006/95/EC

• Electromagnetic compatibility directive 2004/108/EC

• Use of Work Equipment Directive 89/655/EEC supplemented by Directive 95/63 EC

• OSHA 1910 Subpart 0

• Safety regulations

• Accident-prevention regulations and safety rules

• Ordinance on Industrial Safety and Health and Labor Protection Act

• Device Safety Act

Notice!

For safety-related information you may also contact the local authorities (e.g., industrial

inspectorate, employer's liability insurance association, labor inspectorate, occupational

safety and health authority).

2.1 Approved purpose and foreseeable improper operation

Warning!

A running machine can cause severe injuries!

Make certain that, during all conversions, maintenance work and inspections, the system is

securely shut down and protected against being restarted again.

2.1.1 Proper use

The Test Monitoring Unit must only be used after it has been selected in accordance with

the respectively applicable instructions and relevant standards, rules and regulations

regarding labor protection and occupational safety, and after it has been installed on the

machine, connected, commissioned, and checked by a competent person.

When selecting the Test Monitoring Unit it must be ensured that its safety-related capability

meets or exceeds the required performance level PLrascertained in the risk assessment.

Safety

Leuze electronic TNT 35 und TNT 35/7-24V 9

TNT 35/7-24V DEUTSCHENGLISHFRANÇAISITALIANOESPAÑOLNEDERLANDS

The following table shows the safety-related characteristic parameters of the TNT 35 and

TNT 35/7-24V series.

Table 2.1-1: Safety-related characteristic parameters of the

TNT 35 and TNT 35/7-24V series

• The Test Monitoring Unit is used in combination with one or more Multiple Light Beam

Safety Devices or Safety Light Curtains to safeguard danger zones or points of

operation.

• The control of the machine or system that is to be safeguarded must be electrically

influenceable. A switch command initiated by a TNT 35 or TNT 35/7-24V must result in

an immediate shutdown of the dangerous movement.

• The "Reset" acknowledgment button for unlocking the start/restart interlock must be

mounted outside the danger zone and in such a way that the entire danger zone can be

seen from its mounting location.

• Message outputs (state outputs) must not be used for switching safety-relevant signals.

• The Test Monitoring Unit is designed for installation in a cabinet or a protective housing

with a protection rating of at least IP 54.

• The 24 V DC ±20% power supply must guarantee safe isolation from the mains voltage

and be able to bridge a power outage period of 20 ms.

• Depending on external wiring, dangerous voltages may be present at the switching

outputs. In addition to the power supply, these must be switched off and safeguarded

against being switched back on prior to all work on the TNT 35.

• These operating instructions must be included with the documentation of the machine on

which the protective device is installed so that they are available to the operator at all

times.

• Manipulating the Test Monitoring Unit also voids all warranty claims against the

manufacturer of the Test Monitoring Unit.

• The Test Monitoring Unit must be tested regularly by competent personnel.

• The safety distance between the AOPD and the point of operation is to be maintained. It

is calculated according to the formulas for machine-specific C standards or given in the

general B1 standard ISO 13855. The reaction time of the Test Monitoring Unit and the

braking time of the machine must be taken into account.

• Two switching contacts must always be looped into the switch-off circuit of the machine.

To prevent welding, relay switching contacts must be fused/protected externally accord-

ing to the technical data.

• The Test Monitoring Unit must be exchanged after a maximum of 20 years. Repairs or

the exchange of parts subject to wear and tear do not extend the service life.

Type in accordance with IEC/EN 61496 Type 2

Performance Level (PL) in accordance with

ISO 13849-1: 2008 PL d

Category in accordance with ISO 13849-1 Cat. 2

Average probability of a failure to danger

per hour (PFHd)8.8 x 10-8 1/h

Mean time to dangerous failure (MTTFd)69 years

Safety

10 TNT 35 und TNT 35/7-24V Leuze electronic

DEUTSCH ENGLISH FRANÇAIS ITALIANO ESPAÑOL NEDERLANDS

2.1.2 Foreseeable misuse

Any use other than that defined under the "intended use" or which goes beyond that use is

considered improper use!

e.g.

• applications in explosive or easily flammable atmospheres

• use on machines with long periods of downtime

Attention!

Such instances can jeopardize the health and lives of the personnel operating the

machinery and/or may cause damage to property.

2.2 Competent personnel

Prerequisites for competent personnel:

• he has a suitable technical education

• he knows the rules and regulations for occupational safety, safety at work and safety

technology and can assess the safety of the machine

• he knows the instructions for the Test Monitoring Unit and the machine

• he has been instructed by the responsible person on the mounting and operation of the

machine and of the Test Monitoring Unit

2.3 Responsibility for safety

Manufacturer and operating company must ensure that the machine and implemented Test

Monitoring Unit function properly and that all affected persons are adequately informed and

trained.

The type and content of all imparted information must not lead to unsafe actions by users.

The manufacturer of the machine is responsible for:

• safe machine construction

• safe implementation of the Test Monitoring Unit

• imparting all relevant information to the operating company

• adhering to all regulations and directives for the safe starting-up of the machine

The company operating the machine is responsible for:

• instructing the operating personnel

• maintaining the safe operation of the machine

• adhering to all regulations and directives for occupational safety and safety at work

• regular testing by competent personnel

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