OPERATION
EPT031055 Issue 2 September 2017 3-9
Indicators Lamps Fibre Laser
• Interlock Indicator 1 and 2
Note: Within approximately 8 seconds after power up (boot phases of
the safety relay) the display of both interlock LEDs is not valid.
• Shutter Preparation / Error Indicator
Lit GREEN Interlock 1 and 2 respectively
are closed.
Both interlock 1 LED and
interlock 2 LED are alternating
RED flashing
•Wrong order was in the
interlock loops e.g. open
and close one loop only.
Correct and restart the
process.
• The interlock has been
opened while the shutter
self-test was running.
Both interlock 1 LED and
interlock 2 LED parallel RED
flashing
An electrical error (cross
connection) was detected.
Debug wiring and restart the
process.
Both Interlock 1 LED and
interlock 2 LED are lit RED:
The safety relay is completely
shut down. Inspecting of its
display is suggested. Power
cycling is required.
Blinking GREEN Waiting for start command.
Lit GREEN Ready.
Lit RED A shutter malfunction is present
Blinking RED A shutter malfunction was
detected but no more present.
Blinking ORANGE A shutter malfunction was
detected - waiting for start
command.
Lit ORANGE: No shutter and shutter
controlling is equipped.
Interlock 1
Interlock 2
Shutter State /
Error Indicator
Shutter Preparation /
Error Indicator
Laser Indicator/
Error Indicator
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