Synrad Pulstar P100 Series, Руководство оператора, Страница: 46 / 110

operation
2
8 Synrad Pulstar p100 operator’s manual
Start-up and pulsed operation
Caution
possible
equipment
damage
Do not exceed a gas purge pressure of 34.5 kPa (5 PSI). Excessive
pressure may damage the purge assembly or other internal laser com-
ponents.
Do not use argon as a purge gas. Use only nitrogen or clean, dry air as
described in Table 1-3,
Purge gas specifications
.
6 Start purge gas flow at a rate of 0.85–1.7 m
3
/hr (30–60 SCFH, Standard Cubic Feet per Hour) at a
pressure not to exceed 34.5 kPa (5 PSI). If a flowmeter is not available, set a purge pressure between
13.8–34.5 kPa (2–5 PSI).
7 Ensure that your PWM pulse signal source is set to zero percent output (0.0%) at the intended pulse
frequency (repetition rate).
8 Turn on the +48 VDC power supply.
If input signals are properly applied to the User I/O connector or the factory-wired Quick Start Plug
is installed, the INT indicator will illuminate green, the SHT indicator will illuminate blue, and the
RDY LED will illuminate yellow. The TMP indicator will illuminate green if laser temperature is
within safe operating limits.
Starting your Pulstar OEM p100 laser
Important Note: Because the Pulstar p100 is a pulsed laser, it will not operate when a constant 5V
(100% duty cycle) PWM signal is applied. If this occurs, lasing will halt and status
LEDs/outputs will indicate a fault condition (see
Troubleshooting in the Mainte-
nance/Troubleshooting chapter for further information). The laser will recover
immediately when the PWM duty cycle drops below 100%.
Note: Pulstar RDY and SHT LEDs denote separate control functions. Although the RDY lamp may light
while the SHT LED is Off ( Shutter Open Request signal missing), no power is applied to the RF
driver until both RDY and SHT indicators are illuminated.
Warning
serious
personal
injury
Always use shielded cable when connecting your PWM Command
signal source to
PWM Input/PWM Return inputs. In electrically-
noisy environments, long lengths of unshielded wire act like an
antenna and may generate enough voltage to trigger uncommanded
lasing.
1 Apply PWM Command pulses between PWM Input (Pin 9) and PWM Return (Pin 1) on the p100’s
User I/O
connector at pulse frequencies ranging from a single-shot to 100 kHz with pulse widths up
to 600 microseconds (µs).
Note: The Pulstar OEM p100 laser is limited to a maximum pulse width of 600 µs for any single pulse.