7. EZ-SCREEN® – Type 4 14 mm models 0.1 m to 6 m (4" to 20') 30 mm models 0.1 m to 18 m (4" to 60') Two Resolutions Lengths 150 mm to 1800 mm Response Times 30 mm models = 9 ms to 32 ms 14 mm models = 11 ms to 56 ms
9. EZ-SCREEN® Type 2 Type 4 Type 2 Comments Two microprocessorsTwo Safety Outputs One microprocessorTwo Safety Outputs Less redundancy > chance of Optical Short Circuits ± 2.5° EAA ± 5.0° EAA Faults detected byself-TEST Faults detected byself-TEST or byexternal TEST Less resistance to faults and maintain the safety function Maintains response time or issues stop command Periodic external TEST may be needed to maintain safety Low to moderate riskapplications further reduce the possibility of harm “Type 2” versus “Type 4” Type 2 is NOT “half-as-safe” as a Type 4, but:
12. Protective and Warning Fields – Field Pairs Material transfer (robot) cell Conveyor Conveyor Robot Base Monitored Area (Yellow) Area behind robot requires additional safeguarding (example, fencing, hard guarding, presence sensing device) Protective Field (Red) Warning Field (Green) Entry AG4 AG4 Safety Laser Scanner
13. AG4 Safety Laser Scanner Protective and Warning Fields – Field Pairs Material transfer (robot) cell Display of AG4soft program
14. Installation Considerations AG4 Safety Laser Scanner At a minimum, a risk assessment must address: Unmonitored Areas Behind and to the sides of the scanner "Shadowing" within the Protective Field Needle-shaped and cone-shaped contours Adjacent Scanners Could add 40 ms to response time
17. Diverse redundant and self-checking Dual microcontrollers Multiple optical paths The patented diverse-redundant, self-checking design will detect an internal safety-critical circuit fault and immediately switch its outputs to the OFF state. Self-Checking Optical Touch Button STB Design
19. Self-Checking Optical Touch Button Secondary Emitter Patented Multiple Optical Paths Primary Emitter Primary Receiver The secondary circuit ensures that a failure in the primary is detected while a finger is present. Secondary Receiver
30. Application Overview Area Guarding – Interior Cell Monitoring Multiple scanners eliminate unmonitored areas and preventing reset of the interlock gate circuit.