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Compressed air
PBL – Photo-Electric Blocking
A mechanical blocking device for light curtains that enhances machine safety by preventing unexpected startups, requiring no electrical changes.
A reliable solution to ensure safety around light curtains and photoelectric sensors. The Fortress Osbourn PBL (Photo-electric Blocking) is a mechanical blocking device that interrupts the light curtain’s safety signal when a maintenance key is held inside the safeguarded area. This prevents unexpected machine startups until the key is returned.
Benefits of PBL
- No electrical modifications needed – fully mechanical and quick to install.
- Blocks the light curtain’s signal while the key is held by personnel.
- Available with various blocking plates to fit different light curtain models.
- Constructed of 316 stainless steel for long-lasting corrosion resistance.
- Rated for 1,000,000 operations in demanding industrial environments.
- Suitable for temperatures from –25 °C to +80 °C, for indoor and outdoor use.
Applications
- Automation lines and robotic cells
- Machines equipped with light curtains or photoelectric sensors
- Food processing and packaging industries
- Maintenance and cleaning operations requiring machine lockout
Increase worker safety and reduce downtime – Osbourn PBL delivers dependable mechanical safety without programming or electrical changes.