OPERATION
3-14 EPT031055 Issue 2 September 2017
Switching on a System with Shutter
For the following also refer to the X69 Pin description.
(1) After turning on the main switch, wait until the laser controller has
booted completely (boot LED lit green constantly).
(2) The Key switch must be set to the “1” position.
(3) Keep the safety!
(4) Close the (guard) door / (i.e. interlock input) and keep it closed until
the 1st print is done.
(5) Insert a start command (24V @ X69:Pin 7) of at least 100ms duration.
In case of the static mode is used the start command must remain on
until the first print is done.
(6) If the shutter and the safety output of the shutter monitoring system
are tested successfully the safety interlock of the laser controller gets
closed and the laser will be started automatically.
(7) Wait until the laser controller indicates READY.
(8) Insert a print go (trigger) and wait until the print is completed.
(9) Now the (guard) door / (i.e. interlock input) may be opened
respectively the shutter may be closed.
Note that the shutter control system needs to verify the functionality of the
laser modulation feedback path “frequently” in order to guarantee that it
would be able to shut down in case that laser activity might appear when
the shutter is closed.
For that reason, once the first print after the start-up procedure is
done, the shutter may be closed and opened at maximum 19 times
without printing activity. Every print will reset this counter.
Furthermore there is a time-out after 10 minutes which gets reduced
by 30 seconds per each shutter closing. As well every print will reset
this timer.
If a print is not made within 19 shutter closings respectively 10 minutes a
print is made, the system will switch off the laser. In this case, for to get the
laser READY, the shutter start-up needs to be done again.
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