The PBL is a Blocking Device for Light Curtain Safety
Blocking Device for Prevention of Unexpected Restart (Video)
Safety Light Curtains – Photoelectric Sensors – Light Barriers – Perimeter Access Control
Safety light curtains are designed to protect personnel when operating in close proximity to hazardous machinery.
They are reliable, easy to install, cost-effective and enable a convenient and intelligent environment for easy personnel access.
However, when entering a light curtain guarded space, protection against unexpected restart cannot always be guaranteed.
Mechanical Blocking Device for Personnel Protection
Installation to Light Curtain
The blocking device is mounted beside the safety light curtain or light barrier
Deactivation in Normal Operation
When access is required, the light curtain is deactivated
The personnel key is extracted; rotating the blocking plate
Prevention of Unexpected Restart
The light curtain beam is blocked preventing machine start up
Two-padlock lock out
Proactive Inhibit Functions
Proactive inhibit functions are a risk reduction measure to prevent start-up whilst performing whole body access into a safeguarded space (ANSI B11. 19-2019). There are a number of preventative measures which can be implemented for safeguarded spaces to prevent unexpected restart of hazardous machinery, however some are not always practicable.
Type 2 Body Protection (EN/IEC 61496-1/-2) | Single Beam | Type 4 Body Protection (EN/IEC 61496-1/-2)
The Fortress Photo-Electric or Light Curtain Blocking Device
Is the Light Curtain Blocking Device compatible with My Light Curtain?
The world of safety light curtains and light barriers is expansive. This is why Fortress have designed our blocking device with every eventuality in mind.
Installation Orientations | Light Curtain Dimensions | Detection Resolution |
Light Curtain Guards and Coverings | Muting | Washdown | Offset Mounting