AKAS-3 And 3P Laser Safety System

Type selection

Finding the optimal device:

The AKAS safety systems of Fiessler Elektronik are in daily industrial use in more than 35,000 press brakes. Fiessler Elektronik safety solutions for press brakes consist of an optical safety device and a safety control. The components are CE type tested, (c)UL listed, DIN EN12622, B11.3, NR12 and comply with many more national and international standards.


Operating principle of optical protective device:

Designed for OEMs, the New AKAS-3P Optical Laser Light Guard as a three-dimensional laser protective field between the AKAS® transmitter and AKAS® receiver monitors the hazardous area underneath the clamped upper tool. The AKAS-3P has a fast speed up to the claming point, where as the AKAS-3 has a fast speed up to 5mm. The special type of beam configuration guarantees protection directly up to hazardous area. Depending on the machine performance (stopping distance of the blanking press), the press can be operated at high speed. Shortly before the  upper tool touches the sheet metal to be bent.


The AKAS press brake safety system is offered in various versions and can therefore be optimally adapted to the respective situation. Safe area: Protected zone (any intervention into this area shuts down the closing movement of the press).

The result: maximum safety at maximum productivity.


Bending mode

Exactly right for every bending type

The AKAS®safety system provides the user with three easy to select operating modes:

Flat bending mode

The basic mode of the AKAS®safety system is the flat bending mode. During the flat bending mode, the protective field in front of the operator as well as the vertical protective field directly below the tool tip is active. This means the entire 3-dimensional protective field below the tool tip protects the operator during the complete closing movement of the press.


Box bending mode

The operator selects the box bending mode when box-shaped parts are to be bent. For this operating type, the in front of the operator part of the laser protective field is muted/blanked for the duration of the box bending stroke. The press can be closed without hindrance even when the front part of the protective field is interrupted by the turned up edges of a box. Operator
protection is guaranteed by the vertical protective field on the bending line and by the slightly higher switching point from fast speed to bending speed (only applies to AKAS – 3P and AKAS – 3).
The AKAS®safety system thus offers full protection from rapid intervention shortly before the press closes completely even in this operating mode.

Bending of wavy material

This operating mode enables the bending of wavy material or even edge bending within a closed box.

Product choice

AKAS®fully automatic adjustment

Different tools can be used at pressbrakes, depending on the application. To enable the necessary adjustment after changing tools with differently sized tools without losing time, the AKAS®system has a fully automatic electromotive support for the transmitter and receiver.


AKAS®with fully automatic motor adjustment:

To optically broaden the tip of the top tool, a magnetic lamina is fastened to the upper tool.
When the automatic switch is pressed, the transmitter moves to the optimal monitoring position.
The receiver follows this movement.


Fast speed approach to clamping point, OEM preferred

AKAS-3PM/PF – M No gate inputs, can use existing encoders, M/P used by OEMs, P used only with
proportional hydraulics.

Fast speed approach up to 5mm, considered for retrofit

AKAS-3M/F – 3 laser beams, M No gate inputs, can use existing encoders or maybe retrofittable if
control provides speed change signal.

Fast speed approach up to 10mm, retrofittable

AKAS-2F — Most versatile retrofit style, mini safety PLC, magnetic encoders, 2 speed movement, relay
driven, brake overshoot 14mm max.
2F/LC – Most preferred 2 beam retrofit models, LC is manually adjusted to maintain parallel to the punch.
AKAS-2F is the automated version providing that function by pushing a button.