Synrad Novanta OEM ti Series, User Manual

Page: 95 / 106

MAINTENANCE & TROUBLESHOOTING PAGE | 95
inputs are recognized. When PWM Command pulses are applied (and are long enough to produce laser
output) the
LASE
LED illuminates red.
On OEM lasers, the
RDY
lamp illuminates on DC power-up after
INT
and
TMP
indicators illuminate green.
The
SHT
LED illuminates blue when a
Shutter Open
request signal is applied. When both
RDY
and
SHT
indicators are lit, the laser is permitted to lase immediately. When PWM Command pulses are applied
(and are long enough to produce laser output) the
LASE
LED illuminates red.
ti Series
RDY
and
SHT
indicators (as well as
Laser Ready
and
Shutter Open
outputs) 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 driver until both
RDY
and
SHT
indicators are illuminated.
The following tables show how ti Series LED and output signal status changes as various operating and
fault conditions occur. The
Lase Error Codes
table lists specific laser faults that cause
RDY
and
SH
T
indicators to flash
Laser Fault Indications
ti-Series lasers have the ability to indicate five specific fault conditions. In the event of certain faults, the
RDY
LED will blink an error code, pause four seconds, and then repeat the error code. This sequence
continues until the fault is corrected and the laser is reset by cycling DC power to the laser. If a No-Strike
condition occurs, the
SHT
LED flashes continuously until the gas breaks down into a plasma state.
The table below lists error codes, the corresponding fault condition, and describes possible corrective
actions.
Resetting Faults – Keyswitch Lasers
Remote Interlock Condition - A remote interlock condition occurs when the Remote Interlock input
opens (
INT
LED changes from green to red). To reset a remote interlock fault, re-establish the Remote
Inter-lock signal input (
INT
LED changes from red to green) and cycle the Keyswitch from OFF to ON
(or apply a Remote Reset/Start Request pulse with the Keyswitch set to ON). When the
RDY
LED
illuminates, lasing is enabled after a five-second delay.
Over Temperature Fault - Over temperature faults occur when thermal limits in the laser are exceeded
(
TMP
LED changes from green to red). To reset an over temperature fault, lower coolant temperature
below 30 °C (water-cooled) or 40 °C (air-cooled), cycle DC power to the laser, and then cycle the
Keyswitch from OFF to ON (or apply a Remote Reset/Start Request pulse with the Keyswitch set to
ON). When the
RDY
LED illuminates, lasing is enabled after five-seconds.
Under/Over Voltage Fault - An under-voltage or over-voltage fault occurs when the DC input voltage is
below or above preset limits. This fault is indicated by the
RDY
LED flashing 1 blink (under-voltage) or 2
blinks (over-voltage). To reset an under-voltage or over-voltage fault, ensure that 48 VDC is applied to
the laser under full-load conditions, cycle DC power, and then toggle the Keyswitch from OFF to ON (or
apply a Remote Reset/Start Request pulse with the Keyswitch set to ON). When the
RDY
LED
illuminates, lasing is enabled after a five-second delay.