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6

Operating instructions

Opto-Tube

AST LC ST-AS

EN

There are no residual risks, provided that the safety instructions as well 

as the instructions regarding mounting, commissioning, operation and 

maintenance are observed.

1.6  Warning about misuse

In case of improper use or manipulation of the safety 

switchgear, personal hazards or damages to machinery 

or plant components cannot be excluded. The relevant 

requirements of the standard EN 1088 must be observed.

1.7  Exclusion of liability

We shall accept no liability for damages and malfunctions resulting from 

defective mounting or failure to comply with this operating instructions 

manual. The manufacturer shall accept no liability for damages 

resulting from the use of unauthorised spare parts or accessories.

For safety reasons, invasive work on the device as well as arbitrary 

repairs, conversions and modifications to the device are strictly 

forbidden; the manufacturer shall accept no liability for damages 

resulting from such invasive work, arbitrary repairs, conversions and/or 

modifications to the device.

2.  Product description

2.1  Ordering code

This operating instructions manual applies to the following types:

AST LC ST-AS

2.2  Special versions

For special versions, which are not listed in the order code below 2.1, 

these specifications apply accordingly, provided that they correspond  

to the standard version.

2.3  Purpose

The Opto-Tube AST LC ST-AS is a safe connecting module with two 

semi-conductor (p-type) inputs for non-contact safety guards. The 

Opto-Tube is suitable for connecting a light grid (to EN 61496) with two 

monitored semi-conductor outputs (OSSD). The Opto-Tube must be 

exclusively operated in combination with the ASM safety monitor.

The component status can be evaluated through a PLC with  

AS-Interface master. The safety-related functions are enabled  

by means of the AS-i safety monitor.

The user must evaluate and design the safety chain in 

accordance with the relevant standards and the required 

safety level.

LED display

The LED's have the following meaning (to EN 50295):

Green LED:

AS-Interface supply voltage

Red LED:

AS-Interface communication error 

Yellow LED:

Enabling status OSSD 1/2

2.4  Technical data

Standards:

 

EN 50295, EN 60947-5-1, EN ISO 13849-1, IEC 61508

Enclosure:

 

glass-fibre reinforced thermoplastic

self-extinguishing

AS-Interface connection:

 

M12 connector

Protection class: 

IP67 to IEC/EN 60529

AS-Interface voltage range:

 

26.5 ... 31.6 VDC,  

through AS-Interface, reverse polarity-proof

AS-interface power consumption:

 

≤ 50 mA

AS-Interface specification (V2.1):

 

Profile: S-0.B 

IO-Code: 0 x 0 

ID-Code: 0 x B 

IO-Code1: 0 x F 

IO-Code2: 0 x E

AS-interface inputs:Contact 1:

 

Data bits D0 / D1 =  

static 00 or dynamic code transmission  

Contact 2: Data bits D2 / D3 = static 00  

or dynamic code transmission

Outputs:

 

A0 ... A3 no function

Parameter bits:

 

P0 ... P3 no function

Input module address:

 

preset to address 0,  

can be changed through AS-interface bus master  

or hand-held programming device

Diagnostic information: 

LED indication:

 

LED green: Supply voltage 

LED red: Communication error 

LED yellow: Enabling status OSSD 1/2

Voltage supply for non-contact safety switchgear:

 

PELV unit  

to IEC 364-4-41

Response time:

 

≤ 20 ms

EMC rating:

 

to EMC-Directive

Ambient temperature: 

 

−25 °C ... +60 °C

Storage and transport temperature:

 

−25 °C ... +85 °C

2.5  Safety classification

Standards:

 

EN ISO 13849-1, IEC 61508

PL:

 

up to e

Control category:

 

up to 4

PFH value:

 

1.74 x 10

-9

 /h

SIL:

 

up to 3

Service life: 

20 years

3.  Mounting

3.1  General mounting instructions

The component can be mounted in any position. The cylindrial AS-i 

slave can be fitted in an M30 mounting hole; alternatively, the H 30 

clamp (accessory) can be used for the fitting. The connecting cables 

for the safety components and the bus connection must be laid without 

sharp edges or buckling.

3.2  Dimensions

All measurements in mm.

2

ca. 2000

70

66

¤

2

8

25

16,5

M30x1,5

ca. 500

ST2

ST1

Connection of the components: 

AS-i, voltage supply (ST1) and light grid (ST2)

mrl_opto-tube_en.indd   6

23.11.2017   16:10:13

Summary of Contents for AST LC ST-AS

Page 1: ...hr nderungen die dem technischen Fortschritt dienen vorbehalten Werden mehrere Sicherheitskomponenten in Reihe ge schaltet wird der Performance Level nach EN ISO 13849 1 aufgrund verringerter Fehlere...

Page 2: ...ionen freigegeben Die Bewertung und Auslegung der Sicherheitskette ist vom Anwender entsprechend der relevanten Normen und Vor schriften und in Abh ngigkeit vom erforderlichen Sicherheits niveau vorzu...

Page 3: ...der Verwendung des berwachungsbaustei nes zweikanalig abh ngig mit Synchronisationszeit unendlich muss zus tzlich der Anlauftest aktiviert werden Der Automatische Start ist ohne zus tzliche Startbedi...

Page 4: ...08 Teile 1 7 2010 Bevollm chtigter f r die Zusammen stellung der technischen Unterlagen Oliver Wacker M ddinghofe 30 42279 Wuppertal K A Schmersal GmbH Co KG M ddinghofe 30 D 42279 Wuppertal Postfach...

Page 5: ...in the online catalogue on the Internet www schmersal net The information contained in this operating instructions manual is provided without liability and is subject to technical modifications If mul...

Page 6: ...nd design the safety chain in accordance with the relevant standards and the required safety level LED display The LED s have the following meaning to EN 50295 Green LED AS Interface supply voltage Re...

Page 7: ...ependent monitoring device with synchronisation time endless is used the start up test must be activated An automatic start is not authorised without additional start condition The configuration of th...

Page 8: ...13849 1 2016 IEC 61508 parts 1 7 2010 Person authorised for the compilation of the technical documentation Oliver Wacker M ddinghofe 30 42279 Wuppertal K A Schmersal GmbH Co KG M ddinghofe 30 D 42279...

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