C O N T E N T S B R I E F D E S C R I P T I O N

The Machinery Directive statesthat dangerous machines mayonly be put into operation, oncecomprehensive safety measureshave been taken to protect thepersonnel working with thesemachines.

Protection From ShearingAnd Crushing Edges

6

Brief description

Mode of Operation

Benefits for User

Application Examples

HSC®-Safety Edge 12

HSC®-Safety Edge 95

7

8

9

10

11

13

One of these measures is for theprotection of shearing andcrushing edges at automaticallydriven devices bearing asubstantial risk of injury.

To protect against risks at shearingand crushing edges, safetysensitive edges are employed.Applications such as machineguards, lifting tables, theatrestages and many others aretypical. Safety Edges,when activated, will immediatelyswitch off the power source.Before the launch of the HaakeSafety Edge, either electricallyoperating

devices to the N/O principle(two conductive strips or layersare brought together when thesafety edge is operated), or opto-electronic systems (a light beamis interrupted) were thestandard product optionsavailable on the market.Such devices operate viasignals, which need to betransformed and processed via acontrol unit.

Design And Mode Of OperationOf The Haake Contact Chain

As a general rule applies:Machinery and devicespresenting dangerousmovements must be providedwith an emergency stop device.This device is monitored by asuitable safety relay unit.

M O D E OF O P E R A T I O N

7

Our safety edges are built up ofmechanically opening N/C contactsconnected in series, in the form of acontact chain.Current conducting contact rollersand insulating intermediateelements (wedge rollers) arealternately lined up on an expandercord. By pretension, the contactrollers are pressed together, andthe current circuit is made.Actuation of the contact chain leadsto at least one pair of contact rollersto separate by action of the wedge-shaped intermediate elements, andthe current circuit is broken.

Due to the positive break of the supply,transformation of the output signal is not required,since a circuit interruption signal is directlyavailable. This signal is fed to the safety relay unitalready needed for the E-stop button.Note: Wiring of the contact chain is performed in anidentical way as that of an E-stop button.

Favourable Switching Characteristics

8

The sensor part of the safetyedge is positioned directly behindthe front portion of the rubberprofile. Separation of the contactposition does not rely on abending of the contact chain, buton the re-direction of the externalradial forces to internal axialforces.Actuation will commence at lowactuating forces and after a veryshort response travel, providing afast response time.The full remaining height of therubber profile is available as anover-travel.In particular with regard to theprevention of injuries, large over-travels are of enormousimportance for a safety sensitiveedge.Because of the rotationallysymmetrical design of the contactchain, our edges can theoreticallybe operated from any direction,that is, their sensitive rangecovers 360 .

M O D E OF O P E R A T I O N

Benefits For Users

A special control unit is not required,since the contact chain is composed ofelectro-mechanical break contacts, thesignal of which can immediately beprocessed. In addition to cost saving,any expensive connection and wiringactions are unnecessary.

Valuable space is won on the crowdedcontrol panel. Further, of course, a notexisting device cannot go wrong.The use of a break contact guaranteesa high safety level.

At singly occurring faults, the systemimmediately changes to the safe condition:it switches off. If for instance in asafety edge a not perfect gluing of theend caps has been made, or sealingbecomes worse because the gluebecomes brittle, any ingress of insulatingmatter such as dust and dirt will not leadto a loss of the safety function.

B E N E F I T S F O R U S E R S

9

The contact chain-type safetyedge in a correspondinglydesigned configurationmeets category 3 of EN 954-1even the sensor part.

A model meeting highestcategory 4 is also available.

Double-channel designor redundancy is not necessaryfor this system, since the failuremode analysis made by theGerman test house BG hasshown: a single fault does notlead to a loss of the safetyfunction.This permits a simpleconstruction of the system.

A P P L I C A T I O N E X A M P L E S

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A Great Variety Of Applications ForThe Protection Of Man And Machine

rotating doorssliding doorslifting tableslifting stages/theatre stagesautomatically guided vehicles (AGV)machine guardslift doorsaids for handicapped peopleany technically possible risksfor persons or objects from shearingand crushing edges

S A F E T Y E D G E HSC 12

11

HSC 12.01

35

35

60

HSC 12.02

HSC 12.03

38 ± 2

38 ± 2

38 ± 2

65

±2

65

±2

65

±2

30

This safety edge has been designed for indoorand outdoor applications, where highermechanical forces may act on the safety edge.The patented Haake Contact Chain is locateddirectly at the front portion in a chain tube. Whenactuating the safety edge irrespective of thedirection (theoretically 360 ) the current is mechanically interrupted,without an electronic control circuitry necessary for other systems. Theprofile quality TPE (thermoplastic elastomer) has, if compared to theconventional EPDM or NBR materials, an even better ability to bounceback into shape. The advantage of this is that the profile will keep itsshape over years. The aluminium profile 55.01 is provided with threaded

of cable exits are available (see form on opposite page).

SPECIFICATIONSContact and wedge roller ofContact Chain

Tubular rivet

Expander cord

Aluminium carrier profiles

Rubber profile

Enclosure sealing

Rated voltage/current

Operating temperature

Effective sensitive range as requiredby EN 1760-2Actual sensitive range

Max. length of safety edge

Max. cable length

Cables

TolerancesAluminium profiles:Length dimension(sensor):

Thermoplastic POM

E-Cu silver-plated, DIN 7340 Form B

Core: RubberCasing: Polyester network

AlMgSi 0.5 extruded

TPE thermoplastic elastomer

IP 64 to IEC 529/DIN 40050

Max. 50 V AC, 75 V DC, max. 0.5 AFor higher voltage use transformer toVDE 0551

-20 to + 55 C

2 x 45

2 x 90

Standard 6 m, other lengths upon request

50 m

Standard: double insulation cablesFLKM, 0.5 mm2 high-flexible

DIN 1748, DIN 17615DIN ISO 2768 sgor to be agreed

Positionof chain

12

Haake Safety Inc.- Tel. 519-737-0315 Fax 519-737-0314Toll Free 1-888-570-8887 - www.haakesafety.com

E N Q U I R Y (Please copy, fill in and fax us)

1. Height and type of profile

HSC®- safety edge 12................ Quantity:

Company : Name : Fax :

2. Length and application

Length = mm Application:

3. Type of cable exit with strain relief

KV M12 Cable holderswith KV M12

4. Position of cable exit

front left front right front left and right

rear left rear right rear left and right

top left top right top left and right front

right

rear

topleft

5.

X = 50mm (standard)

6. Cable length

1,000 mm (standard)

7. Mounting possibilites

Mounting dimensions are given by variables a and b.

a first and last distances (symetrical design) andb intermediate distances Distance a=________mm; b=________mm

7.1 Size and length of threaded bolts:

M6 x 10 14 18 23 28 36 mm (effective length)

M8 x 18 28 mm (effective length)

7.2 Round holes dia. = 6 mm (standard)

7.3 Oblong holes 7.5 x 21 mm (standard)

S A F E T Y E D G E HSC 95

13

HSC 95.01

35

35

60

HSC 95.02

HSC 95.03

38 ± 2

95

±2

95

±2

95

±2

30

This safety edge has been designed for indoorand outdoor applications, where larger over-travels

-

guards etc.The patented Haake Contact Chain is located directlyat the front portion of the TPE profile in a chain tube. When actuating thesafety edge irrespective of the direction (theoretically 360 ) the currentis mechanically interrupted, without an electronic control circuitrynecessary for other systems.The aluminium profile 95.01 is provided with threaded bolts as to

exits are available (see form on opposite page).

SPECIFICATIONSContact and wedge roller ofContact Chain

Tubular rivet

Expander cord

Aluminium carrier profiles

Rubber profile

Enclosure sealing

Rated voltage/current

Operating temperature

Effective sensitive range as requiredby EN 1760-2Actual sensitive range

Max. length of safety edge

Max. cable length

Cables

TolerancesAluminium profiles:Length dimension(sensor):

Thermoplastic POM

E-Cu silver-plated, DIN 7340 Form B

Core: RubberCasing: Polyester network

AlMgSi 0.5 extruded

TPE thermoplastic elastomer

IP 64 to IEC 529/DIN 40050

Max. 50 V AC, 75 V DC, max. 0.5 AFor higher voltage use transformer toVDE 0551

-20 to + 55 C

2 x 45

2 x 90

Standard 6 m, other lengths upon request

50 m

Standard: double insulation cablesFLKM, 0.5 mm2 high-flexible

DIN 1748, DIN 17615DIN ISO 2768 sgor to be agreed

38 ± 2

38 ± 2

Positionof chain

14

Haake Safety Inc.- Tel. 519-737-0315- Fax 519-737-0314Toll Free 1-888-570-8887 - www.haakesafety.com

E N Q U I R Y (Please copy, fill in and fax us)

1. Height and type of profile

HSC®- safety edge 95................ Quantity:

Company : Name : Fax :

2. Length and application

Length = mm Application:

3. Type of cable exit with strain relief

KV M12 Cable holderswith KV M12

4. Position of cable exit

front left front right front left and right

rear left rear right rear left and right

top left top right top left and right front

right

rear

topleft

5.

X = 50mm (standard)

6. Cable length

1,000 mm (standard)

7. Mounting possibilites

Mounting dimensions are given by variables a and b.

a first and last distances (symetrical design) andb intermediate distances Distance a=________mm; b=________mm

7.1 Size and length of threaded bolts:

M6 x 10 14 18 23 28 36 mm (effective length)

M8 x 18 28 mm (effective length)

7.2 Round holes dia. = 6 mm (standard)

7.3 Oblong holes 7.5 x 21 mm (standard)