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8 Connecting the Laser
Before operating the laser, follow the procedures in this chapter to ensure its
correct and safe operation.
For information on how to connect:
• The Safety Interlock – see “Connecting the safety interlock” on page 91
• Power – see “Connecting power” on page 93
• Modulation signal inputs and outputs – see “Connecting modulation signals”
on page 93
• The Optical Output – see “Connecting modulation signals” on page 93
• Trigger – see “Connecting modulation signals” on page 93
Connecting the safety interlock
To comply with safety regulations and help provide a safe operating
environment, the safety interlock of the laser must be connected to a switch
activated by an access door to the laser’s enclosure. When the switch connected
to the operating area access door opens, it opens the interlock circuit which
turns off laser emissions. The laser is immediately disabled when the interlock
circuit opens. To enable emissions again, the circuit must first be closed and the
emission button clicked within the CONTROL GUI.
Interlock operation Pin 5 of the Main Interface 16 pin connector supplies a positive voltage signal.
When this signal is connected to Pins 7 and 18 through a door switch, laser
emissions are enabled. When the door switch opens, the potential at pins 7 and 8
drops to zero volts and the laser’s electronic logic will shut down the laser.
Lemo connector The RS-485 adapter includes a 2 pin LEMO connector to connect a door switch
cable using LEMO connector FGG.0B.302. The ribbon cable between the laser
and the RS-485 USB adapter connects the 2 pins of the LEMO connector to the
laser’s main interface connector.
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