Novanta f201, Руководство пользователя

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OTHER LASER FAULTS PAGE | 94
Symptom:
•
An over-temperature fault is indicated by the following status LEDs and I/O states:
Remote Interlock LED – Green Interlock Open output – Open
Temp LED – Red Over Temperature output – Closed
Ready LED – Off Laser Ready output – Open
Lase LED – Off Laser Active output – Open
Possible Causes:
•
Coolant temperature is above 28 °C (f201) or there is inadequate coolant flow through the laser.
Check that your chiller is maintaining a water temperature between 18 °C–28 °C (64 °F–82 °F) at a flow
rate of 9.5 lpm (2.5 GPM) for f201.
If water temperature is OK, check the flow rate. The simplest way to do this, if a flow meter is not available,
is to disconnect the cooling tubing from the chiller inlet (or the drain) and run the cooling water for one
minute into a five-gallon bucket; you should have close to the number of gallons listed above. If there is
much less than the recommend flow, check the cooling path for kinked or pinched cooling tubes or check
the chiller for a clogged or dirty filter.
On f201 lasers, the over-temperature fault (indicated by the Temp indicator turning red) is latched. This
means that if an over-temperature condition occurs the Temp indicator will turn red, the Over Temperature
output will Close, the Ready light goes out, and lasing is disabled. Because of its latched condition, the
Temp indicator will remain red even after the laser has cooled sufficiently to begin operation.
To reset an over-temperature fault, lower coolant temperature below 28 °C (f201) and then cycle DC
power (remove DC power, wait 30 seconds, reapply DC power). On Keyswitch-equipped f100/f200 lasers
you must also cycle the Keyswitch from OFF/RESET to ON (or with the Keyswitch ON, apply a positive or
negative voltage in the range of ±5–24 VDC to Pin 2, Remote Reset/Start Request) after re-applying DC
power. When the Ready indicator illuminates, lasing is enabled after the five-second delay. If the Temp
indicator remains red after cycling power, continue to flow cooling water through the laser for a few more
minutes and then cycle DC power again.
Symptom:
•
Your OEM laser has quit lasing or lasing halted and then restarted. The Lase LED may be Off or
on depending on whether PWM Command signals are being applied, but no fault is indicated.
Remote Interlock LED – Green Interlock Open output – Open
Temp LED – Green Over Temperature output – Open
Ready LED – Yellow Laser Ready output – Closed
Lase LED – Off or On Laser Active output – Open or Closed