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2.3.3. Power-On Delays
A delay circuit is required that illuminates warning indicators for a short period of time prior to supplying
power to the lasers.
In the AX-201 with coplanarity checker a delay circuit is created in the startup of the pick and place
process.
2.3.4. Beam Attenuators
A permanently attached method of preventing human access to the laser radiation other than switches,
power connectors or key control must be employed. On the laser sensor on the AX-201, the beam
attenuator is supplied with the sensor as an integrated mechanical shutter.
See chapter 5.1 for detailed information.
2.3.5. Emission Indicator
It is required that the controls that operate the sensors incorporate a visible or audible indicator when
power is applied and the lasers are operating. If distance (>2 m between sensor and controls) or
mounting of sensors intervenes with observation of these indicators, a second power-on indicator
should be mounted at some readily observable position. When mounting the warning indicators, it is
important not to mount them in a location that would require human exposure to the laser emissions.
In the AX-201 with coplanarity checker the emission indicator's are integrated in the 'align process
warnings'.
2.3.6. Warning Signs
Laser warning signs must be located in the vicinity of the sensor such that they will be readily observed.
Location and example of the warning stickers on the AX-201 with coplanarity checker
•
One sign on the front
cover
•
On sign on the rear
cover
•
One sign on each side
of the coplanarity
checker
7
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