Sentinel Plus Press Brake Guarding System Operation Manual LS-CS-M-073
Page 10
Original Language Version: 1.04 Released: 19/07/2017
2 Critical Safety Information
2.1 Proper Use of the Sentinel Plus Guarding System
The Sentinel Plus Press Brake Guarding System is designed to protect hands and fingers
in the area close to the edge of the punch. When installed correctly and safety instructions
are observed fully, the Sentinel Plus system permits safe manipulation close to the punch,
as well as offering effective protection while tools close at high speed.
Please note these general safety notices:
• The Sentinel Plus system is designed exclusively for installation and operation on
hydraulic press brakes, or press brakes that comply with the statutory machine
safety and accident prevention rules and regulations valid for the place where the
press brake is operated, in particular after the system has been installed.
• The Sentinel Plus system must be installed either in the press brake factory, or by
specialist technicians trained by Lazer Safe (or its authorised representatives).
• The operator must be fully conversant with the operation of the press brake and the
risks associated with it, as well as the operation of the Sentinel Plus Press Brake
Guarding System.
• The alignment of the protective equipment for punches of different lengths should be
performed by a die setter (or someone with equivalent specialist expertise) trained
in all relevant aspects of operating the press brake and the Sentinel Plus Press
Brake Guarding System.
• Suitable protective equipment must be worn by the operator at all times.
2.2 Special Warnings
To ensure the highest possible degree of safety in operating a press brake fitted with the
Sentinel Plus Press Brake Guarding System, it is important to note the following special
warnings.
Warning: AVOID FAST, ERRATIC MOVEMENTS AS TOOLS CLOSE.
When the tools close at high speed (above the mute point) towards a static (fixed)
obstruction, there will be less than maximum protection at the point where the
laser detects the obstruction. For example, if a small obstruction such as a finger
is rapidly and erratically pushed between the punch and an obstruction,
immediately before the laser senses the static obstruction the finger might be
touched.
Warning: NO PROTECTION BETWEEN MUTE POINT AND WORKPIECE.
In Normal mode, the Sentinel Plus Press Brake Guarding System protects until
the laser is within 2mm of the material surface. Even though this gap is too small
for a finger to be inserted, always exercise care.
Warning: NO OPTICAL PROTECTION IN FIELD MUTED MODE
In Field Muted mode, all optical guarding is deactivated. Although the Sentinel
Plus Press Brake Guarding System ensures that the machine does not exceed
safe speed in this mode, particular caution must still be exercised.
Entry to Field Muted mode can be password protected, and should only be
used by suitably trained personnel, and only in exceptional circumstances
(changing tools, maintenance, etc.).
Warning: NO OPTICAL PROTECTION IN TOOL SET-UP MODE
In Tool Set-up Mode the laser is ON, but the optical protection is disabled.
Although the Sentinel Plus Press Brake Guarding System will ensure that the
machine does not exceed safe speed if the sensors are obstructed, particular
caution must be exercised.
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