Laser Safety Shutter LS-200

LS-200 Laser Shuer

LS-200 Standard and LS-200 SIL 24 laser shuers Main Features:

 Gravity close blade  Range of blade options  Three control options  Optional beam dumps: Air cooled or water cooled  Safety rated options  LS-200 (Standard) EN IS0 13849-1 PL ‘c’  LS-200 SIL-24 EN ISO 13849-1 PL ‘e’ IEC 61508-1 SIL 3

Overview of the shutter Control Options The LS200 Laser Safety Shuer is designed to prevent The Shuer is usually controlled and powered by a accidental exposure to potenally harmful laser beams. Lasermet interlock controller when all safety interlocks have been closed. If the interlock is tripped out, the When the shuer is open the laser beam passes in clear shuer closes immediately. It cannot be opened unl air through the shuer. When closed, the shuer the interlock system is re-armed. There are three deflects the incoming laser beam out of a separate port opons in wiring the shuer. to an appropriate beam dump which must be fied. 1. Arming the interlock system enables the operaon The photograph above shows an air cooled beam dump. of the shuer. The shuer can then be opened or However, water cooled beam dumps can also be used to closed using the buons on the top of the shuer. absorb higher powers. 2. In addion to opon 1 above, the shuer may be The shuer uses a gravity close blade and force- remotely opened or closed by external controls disconnect proving contacts and is designed to form part such as Lasermet’s LS-20 LS-RS units. of a high-integrity safety system. 3. Arming the interlock opens the shuer A SIL3 dual version is also available which when correctly immediately. wired with the Lasermet Interlock Controller System can Blade options and blade cleanliness provide a safety interlock which meets Safety Integrity Blade opons include: stainless steel, copper, ceramic Level 3 to EN 61508 and ISO 13849-1 Performance Level and coated glass. ‘e’. Cleanlines of the blad is important. A perfectly clean The shuer has a Ø50mm aperture. blade will successfully divert a beam. It is essenal that At 20°C ambient the standard stainless steel blade can the blad is kept clean to avoid excessive heat absorpon dissipate 5W, the copper blade opon 2.5W. Tests may as this can lead to ablaon of stainless steel blades. need to be undertaken to establish the suitability of any shuer when used with powerful lasers. Laser Safety Shutter LS-200

Hardware Fault Tolerance LS-200 laser shutter specifications When correctly connected to a Lasermet ICS-5 control Aperture Ø50mm system the LS-200-SIL-24 has the following Weight Single Shuer: 1.6Kg characteriscs. This can also be achieved by correctly Dual SIL Shuer: TBC connecng to another suitable safety control system Air-Cooled Beamdump: 1Kg which has dual channel monitoring of the shutdown Mounting 2 x M6 threads, T-Nuts supplied device. Power Supply 24VDC Safe Failure Fraction 95% Current Closed: 40mA Opening: 210mA Probability of Failure to Danger (PFD) 1.56 x 10-⁷ Open: 110mA When used as described above, the LS-200SIL-24 is User Controls Open, Close suitable for use as the sole laser shutdown device in a LED Indications Power, Open, Closed system which is required to achieve Safety Integrity Operating Time Fully Open 800ms Level Fully Closed 200ms 3 (SIL 3) or lower as defined in IEC 61508. (NB The actual SIL rang of the enre system will depend Laser Blocking Specification on the other system components, how they are Maximum average beam power: connected together and how the system is used). Using standard blade 20 W Reliability Using mirror blade As per mirror specificaon Mean me to dangerous failure

(MTTFd) Safety Specification 100 years Standard LS-200 EN ISO 13849-1:2008 Number of operaons aer performance level ‘c’ LS-200 SIL-24 EN ISO 13849-1:2008 which 10% of units have failed performance level ‘e’ (B10d) > 1 x 10⁷ IEC 61508-1 SIL 3 when correctly Overall dimensions wired to a suitably rated control system. The LS-200 SIL-24 is a dual channel electromechanical safety laser shutdown device. Power Density Typically the LS-200 standard shuer using a stainless steel blade can handle 100W based on a 10mm beam diameter. Users must ensure the beam dump can absorb and dissipate the laser power. Irradiated PEL (T2) 100 s PEL (T1) Area 10000s The PEL rangs to the right are for a stand- 4 mm² 5 MW/m² 5 MW/m² ard stainless steel 20 mm² 2.5 MW/m² 2.5 MW/m² blade. 80 mm² 1.3 MW/m² 1.3 MW/m²

RT Technologies Inc. Telephone: 770-332-0092 2391 Briarleigh Way Fax: 770-332-0092 Dunwoody, GA 30338 Email: [email protected] Web: www.rtlasersafety.com