Pepperl+Fuchs VAA-2E-G4-SN Manuale utente

FACTORY AUTOMATION

INSTRUCTION MANUAL

AS-Interface Safety at Work

VAA-2E-G4-SN

Version 1.2

With regard to the supply of products, the current issue of the following document is applicable:

The General Terms of Delivery for Products and Services of the Electrical Industry, as published by

the Central Association of the "Elektrotechnik und Elektroindustrie (ZVEI) e.V.",

including the supplementary clause "Extended reservation of title".

We at Pepperl+Fuchs recognize a duty to make a contribution to the future.

For this reason, this printed matter is produced on paper bleached without the use of chlorine.

VAA-2E-G4-SN

Table of content

Date of issue 20.05.2005

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com

Table of content

Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1 Symbols used in this document . . . . . . . . . . . . . . . . . . . . . . 5

2 Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2 General Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4 Connections, displays and control elements . . . . . . . . . 11

5 Power supply of the modules . . . . . . . . . . . . . . . . . . . . . . 16

6 Assignment of the connections . . . . . . . . . . . . . . . . . . . . 17

6.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6.2 Connection examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

7 Operating the modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

7.1 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

7.2 Addressing of the modules . . . . . . . . . . . . . . . . . . . . . . . . . . 23

7.3 Operation of the AS-Interface safety input modules . . . . . . . 23

8 Transfer time of safety-related information . . . . . . . . . . . 24

9 Certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

10 Summary of the requirements for categories . . . . . . . . . 24

VAA-2E-G4-SN

Declaration of conformity

Date of issue 20.05.2005

4Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com

Declaration of conformity

The AS-Interface safety slave for mechanical switches and SN/S1N

proximity switches VAA-2E-G4-SN was developed and manufactured

taking into consideration applicable European standards and regulations.

The manufacturer of the product, Pepperl+Fuchs GmbH in

D-68301 Mannheim, has a certified quality assurance program in

accordance with ISO 9001.

A corresponding declaration of conformity may be

requested from the manufacturer.

Note

ISO9001

VAA-2E-G4-SN

Symbols used in this document

Date of issue 20.05.2005

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com

1 Symbols used in this document

This symbol indicates a warning about a possible danger.

Failure to observe this warning may result in consequences

ranging from personal injury to death or from damage of

equipment to destruction.

This symbol warns of a possible fault. Failure to observe the

instructions given in this warning may result in developing a

fault or even complete failure of the device and any facilities

or systems connected to it.

This symbol brings important information to your attention.

Warnin

Attention

Note

VAA-2E-G4-SN

Safety

Date of issue 20.05.2005

6Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com

2 Safety

2.1 Intended use

Protection of operating personnel and the system is only

ensured if the AS-Interface safety slave is used in

accordance with the usage for which it is properly intended.

The device can only be operated by trained professionals in

accordance with the available instruction manual.

It must only be used as a safety-oriented slave on an AS-

Interface line with a corresponding AS-Interface safety

monitor in accordance with the intended purpose.

The requirements for external cabling and selection of

connected sensors are based on both the functionality to be

fulfilled and the required category (EN 954-1/ISO 13849-1).

This category is determined either with the aid of risk

analysis (for example in accordance with EN 1050) or from

a C standard. The category of the safety monitor must

correspond at least to the category required by the

application.

The correct design of the desired safety function also

depends on the circuitry and programming of the safety

monitor. This also applies to the desired safety response

after a code malfunction or failure. See also the

documentation for the safety monitor and the section of

connection assignment. The safety function (including all

safety-related sensors) must be verified before the unit is

placed in service for the first time.

Warnin

VAA-2E-G4-SN

Safety

Date of issue 20.05.2005

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com

2.2 General Safety Instructions

Any other type of operation than what is described in this

manual places the safety and functionality of the device and

systems connected to it in question. Only professionals

trained in electronics are permitted to connect the device

and to perform maintenance tasks while operation.

If malfunctions cannot be eliminated, the device must be

taken out of operation and protected from being

inadvertently placed back info operation.

Repairs may only be performed at the manufacturer's

facility.

No changes and operations made to the device are

permitted and will render any warrantee claim void.

The operator is responsible for adhering to local safety

regulations and directives.

Warnin

Note

VAA-2E-G4-SN

General information

Date of issue 20.05.2005

8Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com

3 General information

The Actuator Sensor Interface (AS-Interface) is established as a system

for networking primarily binary sensors and actuators on the lowest level

of the automation hierarchy. The high number of installed systems, simple

handling and the reliable operating behaviour make AS-Interface

promising for the area of machine safety as well.

System features

When used according to the intended purpose in combination with an

appropriately programmed AS-Interface Safety at Work safety monitor,

the AS-Interface safety slave described here makes it possible to operate

sensorcontrolled personal protection equipment up through Category 4 in

accordance with EN 954-1.

The safety monitor must be sufficient for the requirements of the system

specification "Specification of secure AS-Interface transfer" Version 2.01

dated May 12, 2000.

The slave is equipped with two safety-related inputs. A mechanical switch

in accordance with EN/IEC 60947-5-1 or a proximity switch of

Pepperl+Fuchs with defined behavior in case of a failure in accordance

with the SN/S1N Specification and EN/IEC 60947-5-3, Type S

(corresponding to Category 3 in accordance with EN 954-1/ISO 13849-1)

can be connected to each of these.

VAA-2E-G4-SN

General information

Date of issue 20.05.2005

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com

Principle of operation

The slave generates a code sequence internally. This code sequence is

monitored by a safety monitor (additional bus participant) for the correct

sequence.

Transferring the code sequence is affected by the status of externally

connected sensors.

Voltage

reference

AS-Interface

chip

AS-Interface

bus

Switch 1

Sensor 1

Sensor 2

Code-

generator

Comparator

voltage

monitoring

Switch 2

Comparator

VAA-2E-G4-SN

General information

Date of issue 20.05.2005

10 Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com

Information regarding the activation of the connected sensors (for

example with Emergency Stop activated, SN proximity switch muted,

code transfer is interrupted) is transferred as follows:

Code words 0000, XX00 and 00XX cause the safety monitor to bring the

system to a safe state (for example in Emergency Stop) without reporting

a malfunction. If a bit of a code word deviates from the target code word,

the safety monitor switches the system into the safe state and indicates a

malfunction in the slave.

An input circuit consists of two dynamically controlled comparators that

affect 2 of the 4 data inputs of the AS-Interface interface component. One

input for SN/S1N proximity switches and one input for mechanical position

switches each are switched logically in series.

Example: An Emergency Stop with two separate circuits (Fault detection

behaviour according to Category 4) assigns both module channels.

Activated input channel Code Data bit D4, D3, D2, D1

1 and 2

None

XX00

00XX

0000

XXXX

1.1

S+1

1.3

S-1

2.1

S-2

2.3

S+2

VAA-2E-G4-SN

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