OTHER LASER FAULTS
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92
RF Drive Switch fault
An RF Drive DC fault occurs on power-up when the tube fails to breakdown, or a fault occurs in the RF
Driver’s 96-volt switching circuitry. In this case, the Ready LED flashes 3 blinks. If an RF Drive DC fault
occurs, reset the laser by removing DC power to the laser, wait 30 seconds, and then reapply power. On
Keyswitch-equipped lasers, you must also toggle the Keyswitch from OFF/RESET to ON (or apply a ±5–
24 VDC Remote Reset/Start Request pulse with the Keyswitch set to ON) When the Ready LED illumi-
nates, lasing is enabled after a five-second delay. If the RF Drive DC fault reappears, contact NOVANTA
or a NOVANTA Authorized Distributor.
PWM Drive/RF Oscillation faults
New circuitry on the f201 RF board has eliminated PWM Drive and RF Oscillation faults. The 4-blink fault
indication no longer exists.
VSWR fault
A VSWR fault indicates an impedance mismatch between the tube and RF Driver and occurs when a PWM
Command signal is first applied. This fault is annunciated by the Shutter LED flashing continuously until
the fault disappears. If a VSWR fault occurs, the VSWR circuit limits the maximum PWM pulse length to 12
microseconds (
μ
s). This equates to a 6% maximum duty cycle at a 5 kHz frequency or a 24% maximum
duty cycle at a 20 kHz PWM frequency. When the VSWR fault clears, the laser resumes normal operation
without cycling DC power. If the VSWR fault fails to clear or reappears, contact NOVANTA or a NOVANTA
Authorized Distributor.
The leading causes of VSWR failures are environmental conditions, like cold overnight temperatures while
the laser is off. In cases like this, it may take as long as 60 seconds for tickle to breakdown the tube and
begin normal daily operation.
Other laser faults
Each Symptom listed below describes a particular fault condition. For each Symptom, specific causes
and solutions are described in the Possible Causes section.
Symptom:
•
A remote interlock condition is indicated by the following status LEDs and I/O states:
Remote Interlock LED – Red Interlock Open output – Closed
Temp LED – Green Over Temperature output – Open
Ready LED – Off Laser Ready output – Open
Lase LED – Off Laser Active output – Open
Possible Causes:
Содержание f201
Страница 1: ...ENGINEERED BY SYNRAD f201 Laser User Manual...
Страница 15: ...INVENTORY PAGE 15 Inventory F201 Lasers Figure 2 3 f201 shipping box contents...
Страница 36: ...F201 LABEL LOCATIONS PAGE 36 f201 label locations Figure 3 1 100 hazard label locations...
Страница 37: ...F201 LABEL LOCATIONS CONTINUED PAGE 37 f201 label locations continued Figure 3 2 F 200 hazard label locations...
Страница 38: ...F201 LABEL LOCATIONS CONTINUED PAGE 38 f201 label locations continued Figure 3 3 F 201 hazard label locations...
Страница 44: ...COMPLIANCE PAGE 44 Figure 3 4 f201 Declaration Document...
Страница 45: ...COMPLIANCE PAGE 45 Figure 3 5 continued F201 Declaration Document...
Страница 76: ...INTEGRATING F201 SAFETY FEATURES PAGE 76 Figure 4 15 F201 packaging diagram...
Страница 77: ...F201 GENERAL SPECIFICATIONS PAGE 77 f201 general specifications Table 4 8 f201 general specifications...
Страница 78: ...F201 GENERAL SPECIFICATIONS PAGE 78 Table 4 9 f201 general specifications continued...
Страница 89: ...STATUS LEDS PAGE 89 Table 5 6 Over Temperature fault Table 5 7 Shutter closed condition Table 5 8 VSWR fault...
Страница 104: ...INDEX PAGE 1 This page is intentionally left blank...