Sentinel Plus Press Brake Guarding System Operation Manual
LS-CS-M-073
Page 49
Original Language Version: 1.04
Released: 19/07/2017
7.2
Setting the Mute Point
Upon returning to the Main screen, the operator will be prompted to set the mute point by
the message
SET MUTE POINT
–
PRESS FOOT PEDAL
. When using laser optical protection
the material position is automatically detected by the laser guard as the tools close.
However, this is not possible with light curtain guarding, and the mute point must be set
manually.
To set the mute point manually:
•
Place a sample piece of material on the die.
•
Press and release the foot pedal repeatedly to close the tools, and stop when the
punch is just making contact with the material.
When the punch is at the correct height release the foot pedal. The
SET
button turns green,
and the message
CONFIRM MUTE POINT - PRESS SET BUTTON
is displayed in the red
Status window.
Setting the mute point is password protected and only accessible to operators with
Supervisor level access. When the
SET
button is pressed the User Interface Panel prompts
the operator to enter the Supervisor access code.
If the access code is correct, the User Interface returns to the Main screen, and the mute
point is now set 6mm (1/4”) above the pinch point. The machine can now be operated as
previously described in
Section 6
.
7.3
Operating in Light Curtain Mode
Operating in Light Curtain mode is virtually identical to operation with laser guards, with the
exceptions that the guard modes Tray mode, Tray 2 mode and Back Gauge mode are not
required and cannot be selected.
Field Muted mode and Stop at Mute mode operate as described in
Sections 3.7
and
3.8
.
7.4
Resetting the Mute Point
Any time the tools or the material thickness is changed, the mute point must be reset. When
the tools are open, press the
MUTE RESET
button. If the machine is not at TDC, the
message
Open tools to enable button function
will be displayed in the Status window.
Note:
Do not press the foot pedal while the
MUTE RESET
label is flashing. If the foot
pedal is pressed, the mute reset operation will be cancelled.
Resetting the mute point is also password protected and only accessible to operators with
Supervisor level access. When the
RESET MUTE
button is pressed the Sentinel Plus User
Interface Panel prompts the operator to enter the Supervisor access code.
If the access code is correct the User Interface returns to the Main screen, the
MUTE RESET
button will flash three times as the mute point is cleared, and the operator is prompted to
SET MUTE POINT
–
PRESS FOOT PEDAL.
7.5
Exiting Light Curtain Mode
To leave Light Curtain mode repeat the steps described in
Section 7.1
, and select
Planer
Laser
as the guarding option.
Exit the Supervisor menu and return to the Main screen. When planar laser guarding is
selected, the current mute point is automatically reset by the Sentinel Plus system, as this
may not be appropriate for the material being worked. The operator must now set a mute
point suitable for material being worked, see
Section 6.3
.
