Novanta i401, Руководство пользователя

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OPERATIONAL FLOWCHART PAGE | 112
Troubleshooting
On i401 lasers, a remote interlock condition is not latched. Re-establish the Remote Interlock signal input
(INT LED changes from red to green and the Interlock Open output Opens) to enable the RDY indicator
and begin lasing after the five-second delay
Over Temperature fault
Over-temperature faults occur when coolant temperature or flow limits in the laser are exceeded (the
TMP LED changes from green to red and the Fault Detected output Closes).
To reset an over-temperature fault, lower coolant temperature below 28 °C to cool the laser and then
cycle DC power to the laser. Once the TMP indicator turns green (Fault Detected output Opens) and the
RDY lamp is illuminated, lasing is possible after the five-second delay.
Important Note: Because of the over-temperature latch circuit, the TMP indicator remains red
(and the Fault Detected 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 sufficiently cooled, or the flow rate is too low—cool the laser for several more minutes and/or verify
the flow rate 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. To reset an under-voltage 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, lasing is enabled
after a five-second delay.
Over Voltage fault
An over voltage fault occurs when DC input voltage rises above a preset limit of 49.5 VDC. This fault is
indicated by the RDY LED flashing 2 blinks. To reset an over voltage 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, lasing is enabled
after a five-second delay.
RF Drive Switch fault
An RF Drive Switch fault occurs on power-up when the tube fails to breakdown, or a fault occurs in the
RF Driver’s 48-volt switching circuitry. In this case, the RDY LED flashes 3 blinks. If an RF Drive Switch
fault occurs, contact Novanta Customer Service or a Novanta Authorized Distributor.