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LS-20 Instruction Manual

00629-53-000

Issue 12 19 January 2021

LASERMET LS-20

INSTRUCTION MANUAL

LASER SAFETY SHUTTER

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Summary of Contents for LS-20

Page 1: ...LS 20 Instruction Manual 00629 53 000 Issue 12 19 January 2021 LASERMET LS 20 INSTRUCTION MANUAL LASER SAFETY SHUTTER ...

Page 2: ...ents 1 Declaration of Conformity 3 2 Safety Note 4 3 Concept 5 4 Control Options 5 5 Indications 6 6 Wiring 6 7 Mounting and Beam Containment 10 8 SIL 3 Version LS 20 SIL24 11 9 Blade and Beam Dump Options 11 10 Using with Powerful Lasers 13 11 Dimensions 14 12 Specifications 16 13 Warranty 17 14 Contact Details 18 ...

Page 3: ...o comply with the requirements of the following Directives and European Standards Directives Machinery Directive 2006 42 EC June 2010 EMC Directive 2014 30 EU Standards EN ISO 13849 1 2015 Safety of Machinery Safety related parts of Control Systems EN 61010 1 2010 Safety Requirements for Electrical Equipment for Measurement Control and Laboratory use Supplier Lasermet Limited Lasermet House 137 Ha...

Page 4: ... this manual Be aware that once degradation starts to occur rapid failure is likely possibly leading to the beam passing unhindered through the shutter Due to the huge number of different types powers and beam sizes of lasers Lasermet cannot guarantee suitability of this shutter in every case and testing may be necessary to ensure that the shutter provides the desired level of protection Always en...

Page 5: ...ety interlocks for example doors covers etc have been closed If the interlock system is tripped out the shutter will immediately close It then cannot be opened until the interlock system is re armed The shutter may be wired to operate in one of three different ways 1 The Arming of the interlock system enables operation of the shutter The buttons on top of the shutter may then be used to open and c...

Page 6: ...utter also has two low power indication outputs one for open and one for closed These output 24VDC at 50mA maximum and are typically used to operate LED indicators on remote control buttons The buttons on the shutter illuminate to show the state A red light means the shutter is open a green indicates the safe condition i e closed 6 Wiring The LS 20 shutter is supplied with a permanently connected ...

Page 7: ...low shows the usual basic control wiring between a Lasermet ICS 6 Interlock Control System and LS 20 Interlock Output 24V 24V 12V 12V 0V 0V DC POWER OUT Interlock System ICS 5 Control Supply 24V Monitor Supply 24V 0V LS 20 Shutter Diagram 1 Basic Control Wiring between ICS 6 and LS 20 In this arrangement the shutter buttons are operative allowing the shutter to be opened and closed when the ICS 6 ...

Page 8: ...t 1 Closed Monitor Contact 1 Common Monitor Contact 2 Closed Monitor Contact 2 Common Diagram 2 Implementing a SIL 3 system using SIL3 LS 20 Note for correct operation installation wiring should use at least 16 0 2mm wire to avoid problems of voltage drop on the wiring run On very long distances when using SIL3 shutters or in situations where two shutters may be connected simultaneously 24 0 2mm w...

Page 9: ...ntact is rated at 100mA 24V maximum resistive load 6 Open 24V output This pin outputs 24V when the shutter is open It can source a maximum of 50mA resistive load Used to operate the open indicator light on Lasermet s LS RS 20 remote switches 7 Monitor Contact 2 Common Common contact for pins 6 and 9 8 Remote Open Command 24V Input Apply 24V to this pin to make the shutter open immediately If the C...

Page 10: ...rrupted when the button is pressed For other options including the use of illuminated signs in conjunction with the shutter please discuss your requirements with Lasermet 7 Mounting and Beam Containment The shutter is equipped with an M6 female thread in the base located under the beam centreline An anti rotation slot is also provided in the base into which a second M6 stud should be located to pr...

Page 11: ... can be determined while the shutter is closed In this arrangement it is essential that the power meter head damage threshold is sufficient to withstand the laser beam for the length of time for which the laser may be active with the shutter closed If using an external option in place of the integral beam dump consideration should be given to the type of blade fitted see below Note that the unit i...

Page 12: ...utters fail to close and the beam is directed to the second shutter beam dump port Note The use of a beam tube which screws into the threaded aperture of the shutter is adviseable especially at the input port of the shutter Some specialised mirrors are only manufactured in widths of 16mm If the shutter is used without a beam tube the aperture of the threaded ports is also Ø16mm and there is a poss...

Page 13: ...int of the metal before conduction can carry the heat away For glass mirror blades the localised heating expands the glass causing it to crack In all cases once the point of contact of the laser beam ceases to reflect as well it will heat and fail If the laser is left running when this happens the shutter will be progressively damaged and burn through of the beam may occur Once damage has occurred...

Page 14: ...LS 20 Instruction Manual 00629 53 000 Page 14 of 18 Issue 12 19 January 2021 11 Dimensions Diagram 3 Standard LS 20 Dimensions in mm ...

Page 15: ...LS 20 Instruction Manual 00629 53 000 Page 15 of 18 Issue 12 19 January 2021 Diagram 4 SIL3 LS 20 Dimensions in mm ...

Page 16: ... 24 Closed 30mA typical Open 330mA typical Surge 545 45mA typical Surge Time 140ms typical Note The shutter has a peak current draw of typically 1A for 100ms during opening The supply voltage must not fall below the minimum operating voltage during this time else the shutter may fail to open Laser Blocking Specification Maximum average beam power Using standard blade 20 W Using integral beam dump ...

Page 17: ... system which is required to achieve Safety Integrity Level 3 SIL 3 or lower as defined in IEC 61508 NB The actual SIL rating of the entire system will depend on the other system components how they are connected together and how the system is used Reliability Mean time to dangerous failure MTTFd 100 years Number of operations after which 10 of units have failed B10d 1 x 107 13 Warranty Lasermet p...

Page 18: ...ete system We also supply equipment and consultancy covering all aspects of laser safety Full support design and installation is available from Lasermet please contact us for any queries Please visit our website For sales and technical support Lasermet Ltd Lasermet House 137 Hankinson Road Bournemouth BH9 1HR United Kingdom Tel 44 0 1202 770740 Fax 44 0 1202 770730 Email sales lasermet com Website...

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