IFM Electronic AC030S Manual de usuario

Operating instructions

Safe AS-i output module

AC030S

7390740 / 02 11 / 2009

Contents

1 Safety instructions ��3

2 Installation / Set-up��4

3 Operating and display elements��6

4 Installation ��6

5 Electrical connection��6

6 Response times��9

7 Consideration of the residual error probability to IEC 61508��10

8 Addressing�� 11

9 Programming�� 11

10 Operation��12

11 Technical data��13

12 Approvals��14

13 Scale drawing��15

1 Safety instructions

Follow the operating instructions�

Non-observance of the instructions, operation which is not in accordance with use

as prescribed below, wrong installation or handling can affect the safety of people

and machinery�

For installation and prescribed use of the unit the notes in the operating

instructions must be carefully observed and the applicable technical standards

relevant for the application have to be considered�

In case of non-observance of notes or standards, specially when tampering with

and/or modifying the unit, any liability is excluded�

The unit must be installed, connected and put into operation by a qualified

electrician trained in safety technology�

After installation the system has to be subjected to a complete function check�

Disconnect the unit externally before handling it� Also disconnect any

independently supplied relay load circuits�

For installation the requirements according to EN 60204-1 must be observed�

In case of malfunction of the unit please contact the manufacturer� Tampering with

the unit can seriously affect the safety of operators and machinery� This is not

permitted and leads to an exclusion of liability and warranty�

2 Installation / Set-up

Applications

The safe AS-i relay output module with conventional inputs is a decentralised

output module for safe triggering of actuators in the AS-Interface Safety at Work

system�

For this purpose, a code table with 7 x 4 bits is transmitted via the AS-i system;

sent by the AS-i safety monitor (e�g� AC031S / AC032S) and received by the safe

AS-i output module�

When operated correctly, the system can be used in applications up to the control

category 4 according to EN 954-1 / PL e to EN ISO 13849-1 or IEC 61508/SIL3

(see notes Electrical connection)�

Attention!

Depending on the safety components used the complete safety system

can also be classified for a lower control category�

Function and electrical connection:

Observe all information in the description of the configuration software (e�g�

E7040S) and the operating instructions of the AS-i safety monitor� These

documents provide all required instructions concerning installation, configuration,

operation and maintenance of the AS-i safety system�

Information on the parameterizable safety functions of the safe AS-i output module

can be found in the chapter "Monitoring devices" of the configuration software

manual�

Important note:

The products described herein are designed to be components of a safety-

oriented machine or control system� A complete safety-related system

normally includes sensors, evaluation units, actuators and signalling

components� It is the responsibility of each manufacturer of a machine

or installation to ensure a correct functioning of the whole system� The

manufacturer of the safe AS-i output module, his subsidiaries and affiliates

are not in a position to evaluate all of the characteristics of a given

machine or product�

The manufacturer accepts no liability for any recommendation that may be implied

or stated herein�

The warranty contained in the contract of sale is the sole warranty� Any statements

contained herein do not create new warranties or modify existing ones�

The complete description of the configuration software, the operating

instructions of the AS-i safety monitor and the operating instructions of the

safe AS-i output module must be taken into account!

Maintenance requirement

A minimum of one testing per year is compulsory by a demand on the

safety function!

3 Operating and display elements









Slide switch R/P1:

Addressing plug2:

Combicon connector with screw terminals (option)3:

4 Installation

Install the safe AS-i output module on a 35 mm raised rail� The protection rating

of the unit is IP 20, therefore it should be mounted in a protected location (e�g�

control cabinet)�

The mounting orientation has no adverse effect on the function� Ensure that there

is sufficient air circulation in the control cabinet�

5 Electrical connection

Mechanical switches or inductive sensors, for example, can be connected to the

inputs� Connect the non-safe inputs e�g� with the screw terminals of the Combicon

connectors�

Attention!

Do not connect the non-safe inputs to an external potential!

Wiring

A+: AS-i +

 

 

   

   

   

   











A-: AS-i -

I+: sensor supply from AS-i

(+24 V output)

I-:: sensor supply from AS-i (0 V)

I1��I3 / 1�Y1: non-safe switching inputs

13-14 / 23-24: safe relay output

LEDs 1: switching status indication

inputs / input feedback circuit

LEDs 2: AS-i, FAULT

LEDs 3/4: switching status indication code

release / LED alarm output /

process release

ADR: addressing interface

R/P slide switch

run / programming mode

Wiring example safe relay output



  







 

 

   

   

   

   







Data bits

Data bit D3 D2 D1 D0

In/Out 1�Y1 I-3 I-2 / O-2 I-1 / O-1

Activated inputs Bit D3-D0

I-1 XXX1

I-2 XX1X

I-3 X1XX

1�Y1 1XXX

Activated alarm output Bit D3-D0

O-1 XXX1

Activated process output Bit D3-D0

O-2 XX1X

X = random

Parameter bits

Parameter bit P3 P2 P1 P0

default: - 1 1 1

Parameter bit Description

P0 1: input I1

0: auxiliary signal 1 (error reset)

or auxiliary signal 2 (restart disable)

P1 1: process release

0: process release via output O-2 = 1

P2 1: feedback safe internal release

0: input I3

The code words 0000, XX00 and 00XX cause the AS-i safety monitor to bring the

installation into the safe state�

For more details on the effect of the data bits on the transmission sequence refer

to the configuration software manual (see the chapter "Monitoring devices")�

Note: safe relay output

The safe relay output is implemented with two positively driven relay

contacts� If one of the two internal relays does not switch (e�g� due to

fusing of the contacts), this is detected in the safe output module�

The relay contacts 13-14 and 23-24 are potential-free normally open

contacts�

Attention!

The wiring influences the achievable control category.

The requirements for external wiring and the selection of the

connected switching contacts refer to the functionality to be

accomplished and to the required control category (EN 954-1

/ ISO 13849-1 or EN/IEC 61508). The control category is either

determined by means of a risk analysis (e.g. to EN 1050) or taken

from a C standard. The control category or SIL level of the AS-i safety

monitor must at least correspond to the control category or SIL level

necessary for the application.

6 Response times

The response time of the safe AS-i relay output module to a safety request is

maximum 50 ms from the application of the code sequence until the switch-off of

the safe relays�

Calculation of the total response time

For the calculation of the response time of the total system, the response times of

the other components also have to be added (mechanical switching contacts, data

transmission, safety monitor and external relays or contactors possibly connected

to the safe relay output)�

Here, the switching times of the mechanical contacts (e-stops) and external relays

or contactors possibly connected to the relay output of the output module have not

been taken into account�

7 Consideration of the residual error probability to

IEC 61508

To calculate the PFH (probability of a dangerous failure per hour) of a safety-rela-

ted function the PFH values of all components used in this function must be taken

into account�

The probability of failure on demand (PFD) is 2�0 x 10-5�

The probability of a dangerous failure per hour (PFH) is 3�3 x 10-9 /h (per hour)�

The indicated PFD and PFH values refer to the maximum switch-on time of 12

months�

The maximum service life (T) is 20 years� The unit can be used in applications up

to SIL 3 (PLe / EN ISO 13849-1 or cat� 4 / EN954-1)�

Explanation of the abbreviations:

PFD = probability of failure on demand

PFH = probability of a dangerous failure per hour

SIL = safety integrity level

T = life time (= service life)

The PFD / PFH values of the other components, especially of the AS-i safety

monitor, can be found in the corresponding documentation�

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