Synrad Pulstar P100 Series, Operator'S Manual, Page: 93 / 110

maintenance/
troubleshooting
4
15 Synrad Pulstar p100 operator’s manual
Troubleshooting
Resetting faults
Remote Interlock condition
A remote interlock condition occurs when there is no signal applied to the Remote Interlock input.
When this occurs, the INT LED changes from green to red, the Interlock Open output Closes, the RDY
LED turns Off, and the Laser Ready output Opens. Lasing is halted immediately.
On OEM p100 lasers, a remote interlock condition is not latched. Re-establish the Remote Interlock
signal input ( INT LED changes from red to green the Interlock Open output Opens, the RDY LED turns
yellow, and the Laser Ready output Closes) and lasing will begin immediately provided the SHT indica-
tor is illuminated blue and a PWM Command signal is applied.
Over Temperature fault
An over-temperature fault occurs when thermal limits in the laser are exceeded (the
TMP
LED changes
from green to red, the Fault Detected output Closes, the
RDY
LED turns Off, and the Laser Ready output
Opens).
To reset an over-temperature fault, lower coolant temperature below 30 °C, allow the laser to cool for a
few minutes, and then cycle DC power to the laser. Once the
TMP
indicator turns green ( Fault Detected
output Opens), the
RDY
lamp illuminates yellow ( Laser Ready output Closes) and lasing is enabled pro-
vided the
SHT
indicator is illuminated blue.
Note: Because of the over-temperature latch circuit, the TMP indicator remains red (and the Fault De-
tected output remains Closed) prior to cycling power even after the laser has cooled sufficiently
to begin operation. If the TMP indicator remains red after cycling power, the laser is not suffi-
ciently cooled. Continue to cool the laser for several more minutes and then cycle power.
Under Voltage fault
An under voltage fault occurs when DC input voltage falls below a preset limit of 46.5 VDC. This fault
is indicated by the
RDY LED flashing 1 blink (the Laser Ready output Opens). To reset an under volt-
age fault, first correct the voltage problem and ensure that 48 VDC is measured at the laser’s DC power
terminals under full-load conditions. Next, cycle DC power off and then on again. When the
RDY LED
illuminates, the Laser Ready output Closes, and lasing is enabled provided the SHT indicator is illumi-
nated blue.
Warning
serious
personal
injury
On OEM p100 lasers, remote interlock faults as well as No-Strike,
Frequency Limit, and 100% Duty Cycle conditions are
not latched.
Clearing the fault or error condition re-enables the RDY LED and las-
ing will begin immediately provided the SHT LED is lit and a PWM
Command signal is applied. Because exposure to 10.6 µm CO
2
laser
radiation can inflict severe corneal injuries and seriously burn human
tissue, the OEM or System Integrator must ensure that appropriate
safeguards are in place to prevent unintended lasing.