Sentinel Press Brake Guarding System Operation Manual
LS-CS-M-066
Page 10
Original Language Version: 1.06
Released:
03/07/2019
3.5.1
Tray Mode - From a Stationary Position
If there is no obstruction to any of the sensors then the system operates as it does in Normal
Mode (refer
Section 3.4
). If the front and/or rear of the sensors are obstructed when the
pedal is pressed, then the tools will not close and the message
Front/rear sensor blocked
–
RELEASE FOOT PEDAL
is displayed. The operator must release and press the pedal again, at
which point the system deactivates the front and rear of the sensors and allows the tools to
close in high speed (the middle sensor must remain clear) until the bend is completed. If the
middle zone of the sensor is obstructed when the pedal is pressed then the tools will not
close. The operator must release and press the pedal again. The system will force the tools
to close in safe speed only with the optical protection muted and display the message
LASERS
INACTIVE
until the bend is completed. The sensors become active again once the tools are
opened.
3.5.2
Tray Mode - When the Tools are Closing
If there is no obstruction to any of the sensors then the system operates as it does in Normal
Mode (refer
Section 3.4
). If the front and/or rear of the sensors are obstructed then the tools
will stop closing and the message
Front/rear sensor blocked
–
RELEASE FOOT PEDAL
is
displayed. The operator must release and press the pedal again, at which point the system
deactivates the front and rear of the sensors and allows the tools to close in high speed (the
middle of the sensor must remain clear) until the bend is completed. If the middle of the
sensor is obstructed when the pedal is pressed, then the system will force the tools to close
in safe speed only with the optical protection muted and display the message
LASERS
INACTIVE
until the bend is completed. The sensors become active again once the tools are
opened.
Mute point
Sensor A
Sensor B
Sensor Active
Sensor Muted
Figure 3-6: Tray/Box Mode Operation
3.5.3
Tray 2 Mode
Tray 2 mode is a variant of the standard Tray/Box mode. As in Tray/Box mode, the front and
rear of the sensors of the guarding system are disabled, so that complex shapes can be bent.
The operation of Tray/Box 2 mode differs from standard Tray/Box mode in the following
details.
1. Before every stroke the operator must acknowledge that they are in Tray 2 mode. The
first pedal press does not close tools, but generates the message
TRAY 2 CONFIRM
–
RELEASE FOOT PEDAL
, alerting the operator that Tray 2 mode is selected. This
message will be displayed until the pedal is released. The operator now has three
seconds to press the foot pedal and perform the stroke.
