
B-70315EN/02 1.SAFETY FOR LASER HANDLING
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1.10 SHUTTER LOCK
The shutter lock is prepared because it dose not put out the laser beam
by mistake. If you do not put out the beam, lock the shutter.
Use the mechanical switch at shutter lock switch, not electrical
component (Relay)or switching circuit (Transistor, FET).
Use the one with the compulsion dissociation mechanism for the
switch used for the shutter lock circuit and the switch for welding
prevention.
To designer of laser processing machine
1 Use a mechanical switch for the switch used to lock
the shutter. Do not use an electric switch (For
instance, transistor circuit, etc.). Moreover, use the
one with the contact dissociation mechanism to
prevent welding for a mechanical switch.
2 Put it in the series of the contact of the emergency
stop button in the shutter lock circuit. When the
emergency stop switch is pushed, it is necessary to
intercept the power supply to the shutter.
1.11 EMERGENCY STOP BUTTON
Press the emergency stop button when it is dangerous and breaks
down. The oscillator is stopped discharging, gas pressure control and
stand by purge state.
Use the one with the compulsion dissociation mechanism for the relay
used for the emergency stop circuit and the switch for welding
prevention.
1.12 WARNING LIGHT (OPTIONAL)
Laser oscillator is equipped with the warning light optionally. The
light is flashed during discharging and ready of laser beam emission.
Be careful of laser beam and high voltage.
To designer of laser processing machine
In EN60825-1, it needs the design with the fail safe
or redundant for warning equipment. The redundant
warning light is needed near the work-point of
processing machine. The warning light is prepared
for the oscillator. Select this as a warning light more
than the second for the fail safe.