LCA Light Curtains
Type 2 light curtains good for the requirements of Category 2 PL c and safety level SIL 1. On Type 2 devices, the safety function is checked by periodic tests. Faults are detected during the periodic test.
Type 4 light curtains good for the requirements of Category 4 PL e and safety level SIL 3. On Type 4 devices, faults are constantly being tested for. If detected, machine movement is stopped immediately.
Type 4 light curtains where up to three sets of transmitters and receivers can be connected in series to provide for flexability in securing dangerous areas. A single pair of OSSD safety signals is run back to the safety system.