1
Operating Instructions: Interlock Blocking - IBL
Description
Fortress’ IBL is an Interlock Blocking device designed to
provide additional safeguarding to prevent operators being
trapped inside a safeguarded space in machine guarding
applications where whole body access is required. The IBL
works in conjunction with existing interlocking to prevent
the unexpected reset or restart of the safety-related circuit.
It works by forcing the removal of a personnel or safety key
before the guard can be fully opened and preventing the
guard from fully closing until the key is returned. Thus, while
the key is with the operator inside the area, the interlock is
blocked from allowing the machine to be reset or restarted.
Additional padlock points allow for each individual 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, regardless of interlock type, without the
need for wiring or programming.
Options & Ordering Information
Description
Part No.
IBL device suitable for Left hand facing Hinged Doors
IBL2H-1-1-CLSS-MP1
IBL device suitable for Right hand facing Hinged Doors
IBL4H-1-1-CLSS-MP1
IBL device suitable for Left hand facing Sliding Doors
IBL2S-1-1-CLSS-MP1
IBL device suitable for Right hand facing Sliding Doors
IBL4S-1-1-CLSS-MP1
NOTICE!
IBL is not an interlock and must only be used in addition to an interlock as part of a safety related part of a control system that
meets required reliability.
The IBL device cannot be used in conjunction with an Interlock that includes an Escape Release or Internal facing
handle.
Important:
The IBL Interlock 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 IBL device alone is not an Interlock and must only be used in addition to an Interlock as part of a complete
machine guarding system. The paired Interlock device 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.
The installation and operation of the IBL Device and the complete machine guarding system must take into account the
requirements of ISO 14119:2013, in particular Section 7 - Design for minimising defeat possibilities.
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.
IBL-H
IBL-S
