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Operating Instructions: Photoelectric Blocking - PBL
Description
Fortress’ PBL prevents unexpected start-up in areas safeguarded
by light curtains, an individual takes the safety key when entering
the area and while they have that key on their person the light
curtain remains blocked and therefore the protective stop function is
maintained, this ensures the hazard cannot be reset or restarted until
the key is returned to the unit. PBL provides the same peace of mind
for an operator entering past a light curtain as a safety key or interlock
blocking device does with physical guards. Additional padlock points
on the dustcover allow any subsequent individuals entering the area
to apply their own means of control to the device.
As a purely mechanical component complete with an integrated
mounting plate it is easily retrofitted or added to an existing system,
with a compatible light curtain, without the need for wiring or
programming.
Options & Ordering Information
Description
Part No.
PBL Device for left-hand blocking, with 100mm Blocker Plate and
right-angled mounting bracket.
PBL2A-1-1-CLSL-MP1
PBL Device for right-hand blocking, with 100mm Blocker Plate and
right-angled mounting bracket
PBL4A-1-1-CLSL-MP1
NOTICE!
PBL is not an interlock and must only be used in addition to a light curtain as part of a safety related part of a control system
that meets required reliability.
Important:
The PBL Photoelectric Blocking Device is designed for use according to the installation and operating instructions enclosed.
It must be installed by competent and qualified personnel who have read and understood the whole of this document prior to
commencing installation.
If the Device or guarded machinery equipment is used in a manner not specified by the manufacturer, the protection provided
by the equipment may be impaired.
Any modification to or deviation from these instructions invalidates all warranties.
Fortress Interlocks Ltd accepts no liability whatsoever for any situation arising from misuse or misapplication of the Device.
The PBL device alone does not provide any protection from unexpected restart, it must only be used in addition to
a compatible light curtain as part of a complete machine guarding system. The light curtain must meet all relevant
safety requirements and applicable safety standards.
BEWARE OF INTENTIONAL MISUSE CAUSED BY OPERATORS WANTING TO BYPASS SAFETY SYSTEMS. THE
INSTALLER SHOULD ASSESS THE RISKS AND MITIGATE AGAINST THEM.
In order to maintain device safety rating, overall machine guarding system must be validated to EN ISO 13849-2 and/or
evaluated in accordance with IEC 62061.
IF YOU HAVE ANY QUESTIONS OR QUERIES OF ANY NATURE WHATSOEVER PLEASE CONTACT THE SUPPLIER
WHO WILL BE PLEASED TO ADVISE AND ASSIST.
