1.
Use only tools with the same height in the same fixing on the press. All utilized tools must have one common
bending line.
2.
Stoppers, which are mounted at the matrix, lead to a premature switching-off of the downward
movement.
3.
The maximum allowable overrun traverse of the machine
:
10mm bei AKAS®-LC II...
The press must have
an automated overrun traverse control for the first stroke. If not, it can be realised by
the AKAS®-...F and a cam controller or by the Fiessler AMS-system . Before the initial start-up, the overrun
traverse must be checked either by using the test rod (see page 5) or by using an Overrun Traverse measu-
ring device.
(upon customer's request, Fiessler Elektronik will perform the Overrun Traverse Measuring on the customer's machi-
ne.)
If the results of 10 consecutive measurements are larger than 10mm the fast speed must be reduced.
4.
Due to the missing sychronization during fast speed, AKAS® cannot be used for two machines aligned in
parallel (e.g. "tandem press brake") .
5.
Muting signal
If a light beam is interrupted by the sheet which is to be bent, the AKAS® would stop the working
stroke immediately. Therefore the AKAS® must be muted before it gets interrupted by the sheet. Likewise, slightly
uneven sheets should not lead either to an unintended switching-off of the cutting movement. From an opening of <
13 - 22 mm (according to overrun traverse of the press) the control system of the machine must send a Mutingsignal to
the reciever.
Then the control system of the machine must reliably guarantee according to safety category 4,
that from this time the stroke speed is < 10 mm/s
.
6.
The protection of a pressbrake by the AKAS® does not permit a bending in the bottom of a box inside one
box in fast speed.
7. The AKAS® does not protect:
-if the machine is only run in the work speed, or AKAS will be
interrupted during fast speed and the stroke will be continued in
work speed
-if the overrun traverse of the press brake is too long
-from squeezing during the bending operation
-if the mutinglamp is constantly on
8.
The hazardous state of the machine must be terminated by the sensor function.
9.
The safety level (class 4) of the accident preventing light barrier should at least correspond to the safety le-
vel of the control system of the machine.
10.
Laser beams may be deviated due to air currents, this may cause unwanted and unforeseen machine
stops. Therefore the machine must be erected at a place free of air currents.
Acceptance test: the installation acceptance test and inspections should be carried out by a competent person in pos-
session of all the information supplied by the manufacturer of the machine and the ESPE.
Upon customer's request, Fiessler Elektronik will perform the initial acceptance as well as the annual test. Additional-
ly, customer training seminars on how to execute annual tests will be conducted at regular intervals.
The machine owner must make sure that a competent person is assigned to check the light barrier annually. This per-
son can be an employee either from the light-barrier manufacturer or from the operator's staff. The annual test shall be
executed according to the inspecti
on sheet on pae 48.
Safety Instructions
Acceptance
Annual Inspection
6
2
fig. 6/ 1
fig. 6/ 2
Prerequisites for using the press brake protection AKAS®
2.1
Doku Nr. 995 Stand 1.12.2011 / Aui
FIESSLER
E L E K T R O N I K
