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see chapter 6
Electrical connections
According to EN 12622, the overrun traverse of the machine must be verified automatically at the first stroke
after its connection to power of the press brake or of the AKAS® and it must be repeated at least after 30 h, if
the machine remains connected to power for a longer period of time.
The products of the
AKAS®-
...
F
product family can execute this overrun traverse test with the help of a cam
scitch and a normally closed contact. For this, the length of the cam must correspond to the allowable overrun
traverse plus the hysteresis of the cam switch. The maximum allowable overrun traverse must not exceed the
value programmed via the dip switch positions in the support of the
AKAS®-3F
and
-IIF ,
respectively the va-
lue of
15 mm with the
AKAS®-LCF .
This overrun traverse cam must be mounted in a way that the press is in the maximum closing speed when the
cam switch is opened by the cam, and the stroke is started out of the upper dead center of the machine.
The overrum traverse test is carried out after every voltage reset and must be repeated every 24 hours. After
the successful overrun traverse test, the press must be at first opened for the execution of one bending stroke.
The ajustment controll-LEDs are flashing slowly until the press brake is not opened completely.
If the overrrun traverse is too long, the cam does not open the overrun traverse cam switch when the closing
movement is stopped, and the AKAS will prevent the complete bending stroke in fast speed.
If the overrun traverse control is not carried out by the AKAS®, the machine control must carry out an overrun
traverse test at least after a voltage reset. This overrun traverse test must be repeated within the next 30 hours.
Mounting
Automatic overrun traverse test
29
8. Verification of all electrical
connections
referring to safety class 4
9. Automatic overrun traverse
test
5
5.9,5.10
Doku Nr. 988 Stand 3.2.2016 / Aui
FIESSLER
E L E K T R O N I K