Novanta v40 User Manual page 91

RESETTING FAULTS
On v40 OEM lasers, remote interlock (INT) faults are not latched. Clearing the fault condition re-
enables the RDY indicator and the laser will fire after the five-second delay provided that the SHT
indicator is lit and a PWM Command signal is applied. Because exposure to 10.6 μm CO2 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.
Symptom:
•
A remote interlock fault is indicated:
INT LED – Red
TMP LED – Green
RDY LED – Off
SHT LED – Blue
LASE LED – Off
Possible Causes:
•
No voltage applied to Pin 3 (Remote Interlock) on the User I/O connector.
On systems using remote interlocks, check to see that a positive or negative voltage (±5–24 VDC) is ap-
plied to Pin 3, Remote Interlock, with respect to Pin 11, Input Common, on the User I/O connector (refer
to User I/O connections in the Technical Reference chapter for details). For systems not using interlocks,
connect the factory-supplied Quick Start Plug to the User I/O connector on the laser's rear panel or wire
your male DB-15 connector so that Pin 11 (Input Common) is jumpered to Pin 12 (Auxiliary DC Power
Ground) and Pin 3 (Remote Interlock) is jumpered to Pin 4 (+5 VDC Auxiliary Power).
Symptom:
• An over temperature fault is indicated:
INT LED – Green
TMP LED – Red
RDY LED – Off
SHT LED – Blue
LASE LED – Off
Possible Causes:
•
Water-cooled lasers – Cooling water temperature is above 22 °C (72 °F) or there is inadequate
water flow through the laser.
Check that your chiller is maintaining a water temperature between 18 °C–22 °C (64 °F–72 °F) at a flow
rate of one gallon per minute (GPM). If water temperature is OK, check the flow rate. The simplest way
Warning: Serious Personal Injury
Interlock Open – Closed
Over Temperature – Open
Laser Ready – Open
Shutter Open – Closed
Laser Active – Open
Interlock Open – Open
Over Temperature – Closed
Laser Ready – Open
Shutter Open – Closed
Laser Active – Open
PAGE | 91