20 EPT058613 Issue 1 March 2020
Shutter State / Error Indicator
Note: The GREEN shutter preparation LED blinking is suppressed if one or both interlock
is not closed.
Laser Indicator / Error Indicator
LED Test display on Power Up
After power up, the controller will start an error test display in the following sequence:
• Shutter state error; each sec. means 10° Celsius of scanner temperature. This
display shows that the temperature sensor of the shutter housing is properly
connected, and that the LED works.
Then, approximately 8 seconds after power up the 4 LED’s from top to bottom:
• Extinguish for a moment
• Light up (RED) for 1 second each, top to bottom
• Extinguish for a moment
• Display status as described above
If unauthorised changes are performed, the warranty will be invalidated.
Lit YELLOW Shutter is open
WARNING: laser radiation is possible!
Lit RED Shutter temperature display (after power-up only).
Lit RED (permanent) shutter feedback cross-check failed.
Flashing RED while the GREEN
Shutter preparation LED is lit or
blinking
Shutter is close to over temperature.
Blinking RED while GREEN shutter
preparation LED is blinking
A shutter over temperature, or sensor fail (<10°C) had
occurred. Therefore the laser was switched off.
Restart is possible.
Flashing RED while GREEN shutter
preparation LED is off
A shutter temperature sensor fail (<10°C) is present.
Therefore the laser is switched off.
Blinking RED while GREEN shutter
preparation LED is off
A shutter over temperature is present. Therefore the
laser is switched off.
Lit YELLOW Laser source ready for emission.
Lit RED (error) Laser is not (correctly) started.
1x Flashing YELLOW Laser modulation (print activity) missed.
2x Flashing YELLOW Laser modulation (print activity) not permitted.
3x Flashing YELLOW Laser modulation (print activity) missed AND not permitted.