NKT Photonics Koheras ADJUSTIK, Product Manual

Page: 83 / 105

83
7 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 83
•
Power – see
“Connecting power” on page 85
•
Modulation signal inputs and outputs – see
“Connecting modulation signals”
on page 85
•
The Optical Output – see
“Connecting modulation signals” on page 85
•
Trigger – see
“Connecting modulation signals” on page 85
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 connected switch
is opened by the door, it opens the interlock circuit which turns off laser
emissions.
Interlock operation
Laser emission can be enabled when the connected interlock circuits are closed.
There are two circuits: one circuit is connected through a door switch.
Figure 56 Interlock connected to a door switch - Laser ON
When either the door switch or the external bus circuit opens (see
Figure 57
) the
circuit, the laser’s electronic logic detects this and shuts down the laser.
Off
On
Logic Circuit
External Bus
Connector
Koheras
ADJUSTIK
Bus Defeater
Laser Control Circuitry
Reset
Set
Shutdown Laser
Normally
Open
Door
Switch
Accessory
Energized
Interlock
Monitor
Control unit key switch
LEMO
Connector