Novanta v40 User Manual page 46

WITHOUT A UC-2000 CONTROLLER
If the Quick Start Plug is installed, the INT (Remote Interlock) indicator will illuminate green and the SHT
(Shutter) indicator will illuminate blue—if the manual Shutter Switch is Open. The TMP (Temperature)
indicator will illuminate green if laser temperature is within safe operating limits.
Starting your v40 laser
v40 RDY and SHT LEDs denote separate control functions. Although the RDY lamp may light while the
SHT LED is Off (Shutter Switch Closed or Shutter Open Request signal missing), no power is applied to
the RF boards until both RDY and SHT indicators are illuminated.
1 If the laser has a Diode Pointer installed, remove its aperture dust cover.
2 Place the Shutter Switch (if equipped) in the Open position. The blue SHT (Shutter) indicator will
illuminate.
3 Rotate the Keyswitch (if equipped) to the ON position. Verify that the yellow RDY (Ready)
indicator on the laser illuminates.
Important Note: Each time an OEM laser is powered up or a Keyswitch version is cycled OFF/ON,
a five-second delay occurs between the time that RDY and/or SHT indicators illuminate and is permitted
to lase.
For remote operation (Keyswitch lasers), it is possible to set the Keyswitch to the ON position and use
the Remote Reset/Start Request signal (on the User I/O connector) as a remote keyswitch, like other
NOVANTA laser models.
4 Using your PWM controller, slowly increase the duty cycle of the square wave. The LASE
indicator illuminates red when PWM signal pulses are long enough to produce laser output
(typically 5–10 μs at 5 kHz). The spot where the beam hits the beam block increases in brightness,
indicating increased power output.
Because of phase differences, external tickle pulses may combine with the internally generated tickle
signal causing the LASE LED to flicker during the transition from tickle to lasing. Laser output may
occur if the Lase LED flickers.
5 Remove the PWM Command signal from the User I/O connector. The LASE indicator on the laser
should turn off.
6 Place 's Shutter Switch (if equipped) in the Closed position.
7 On water-cooled v40 lasers, shut off the chiller or otherwise stop coolant flow through the laser.
Do not flow coolant through the laser for an extended period of time when the laser is shutdown. This
causes condensation to form inside the laser which may result in catastrophic damage to internal
optics and electronic circuits.
Warning: Serious Personal Injury
Caution: Possible Equipment Damage
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