04.2

020

Distance protection system

in Performance Level PL b, PL c and PL d

The application or the building statics may make distance protection for crabs and/or cranes necessary. Nowadays state of the art technical developments allow for distance protection systems whose structure and operation are convenient, reliable, low-maintenance and extremely cost-effective. STAHL CraneSystems’ team of engineers and technicians always keeps up to date. You can rely on their practice orientated experience. Crane and crab distance protection is provided by light barriers or laser distance sensors and, depending on the version, by the field-proven evaluation device SMC or the two-channel safety shut-off device SCC.

Versions for Performance Level PL b, PL c and PL d employ the recognised and reliable laser scanner technology. These elevate the technology to a higher level of safety and convenience compared to light barrier solutions. The laser scanners continuously monitor the distance, so that any break in the visual range is detected immediately and the crane is brought to a stop. Performance Level PL b is used for crane distance protection with no static relevance, for example to prevent mechanical collisions. Performance Level PL c is the minimum specification if a collision between cranes must be prevented for static reasons. Transporting molten metal or applications with a similar hazard potential demand Performance Level PL d.

The operating company performs the hazard analysis and determines the Performance Level required. As an alternative, the Performance Level may be specified by the applied standard.

Distance protection system

� Innovative technology with economic advantages� For safety levels PL b, PL c and PL d� Laser system with extremely long

distance measurement up to 75 m (up to 100 m as an option)� Temperature range –10 °C to +60 °C� Parametrisable� Flexible, adaptable� The distance is monitored contin-

uously, any break in the visual range is detected immediately

The facts

The utmost safety for people, machines and production goods has top priority. This means that risks must be reduced by employing the highest practicable safety level. EN ISO 13849 (Safety of machines – Safety-related parts of control systems) is the basic standard and deals with all safety requirements on all types of machines. It is aimed at manufacturers, and thus also at crane and systems builders and operating companies that may carry out or commission safety-relevant modifications. A multi-stage hazard analysis defines the machinery requirements to be met. The Performance Level is determined on the basis of a hazard graph.

S = Danger of injury F = Frequency of hazardP = Possibility of prevention

Starting point for assess - ment of risk minimi sation

High risk

Low risk

P1F1

F2

F1

F2

a

e

b

c

d

P1

P1

P1

P2S1

S2

P2

P2

P2

Travel motion with crane or crab distance protection

Adjustable distance rangeStop

Smooth deceleration

Normal travel motion

75 150m

Current characteristic of laser scanner (mA)

24

0

4

8

12

16

20

Crane distance protectionCollision protection for two or more crane bridges to one another and/or safety distance protection for static reasons

Crab distance protectionCollision protection for two or more crabs to one another

Crane distance protection to wall and/or end of runwayCrane safety distance protection to wall of production building and/or end of crane runway

Crab distance protection to wall and/or end of runwayCrab safety distance protection to wall of production building and/or end or crane bridge and bypass control to secure a section of the building

Presented by

Argentina Australia Austria Belgium Brazil Bulgaria Canada Chile

China Columbia Croatia Cyprus Czech Republic Denmark Ecuador Egypt Estonia Finland France Germany Great Britain Greece Hongkong Hungary India

Indonesia Iran Ireland Israel Italy Jordan Korea (South) Latvia Libanon

Libya Lithuania Malaysia Mexico Netherlands Norway

Pakistan Peru Poland Portugal Romania Russia Singapore Slovakia Slovenia South Afrika Spain

Sweden Switzerland Syria Taiwan Venezuela Vietnam Thailand Turkey UAE Uruguay USA

Vertriebspartner Tochtergesellschaften

Argentina Australia Austria Belgium Brazil Canada Chile China Columbia Croatia Czech Republic

Denmark Ecuador Egypt Estonia Finland France Germany Great Britain Greece Hongkong Hungary India Indonesia

Ireland Israel Italy Jordan Latvia Lebanon Lithuania Malaysia Mexico

Netherlands Nigeria Norway Pakistan Peru Philippines Poland Portugal Rumania Russia

Taiwan Thailand Turkey UAE Uruguay USA Venezuela Vietnam Singapore Slovakia Slovenia South Africa South Korea Spain Sweden Syria

Sales partners Subsidiaries

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STAHL CraneSystems GmbH Daimlerstr. 6, 74653 Künzelsau, Germany Tel +49 7940 128-0, Fax +49 7940 55665marketing.scs@stahlcranes.comwww.stahlcranes.com

You can find this and other brochures at www.stahlcranes.com/download. We will gladly also send them to you by post.

09.2

017

Die Krantechnik

12.2

012

Kompetenz im Explosionsschutz

05.2

015

Die Engineeringlösung LNG

03.2

017

Der Radblock SR

10.2

019

Der Kettenzug ST

04.2

014

Der Seilzug SH

03.2

017

Der Seilzug AS704

.201

9Die Winde SHW 8