
B-70255EN/01 6.TROUBLESHOOTING
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6.4.8 Excessive Laser Gas Consumption
Possible causes are listed below. Take appropriate action.
Cause of trouble Solution
1 Gas leakage between
gas cylinder and
oscillator
Ascertain the following.
1) Anomalous mounting of regulator.
2) Anomalous connection between tube and
regulator.
3) Anomalous connection of gas inlet fitting of
oscillator.
2 Anomalous adjustment of
gas controller
Adjust in accordance with the description of
Chapter 9.
3 Gas leakage inside gas
controller
Conduct a pressure application test. If the test
shows a leakage, tighten the piping. There may
be a leakage from the gas piping tube attached
to the gas flow rate adjustment valve. So, check
for leakage.
6.4.9 High-frequency Inverter Alarm Display
Causes of alarms
When an inverter alarm is issued, a message as shown below appears
on the digital panel of the inverter. The causes of the inverter alarms
are listed below.
Display : Exx.z
Exx : Cause of alarm (Message)
z : Status of inverter at alarm occurred
Causes of inverter alarms (Model : SJH300)
Message Contents Cause
E01 Overcurrent (during turbo blower
constant-speed operation)
E02 Overcurrent (during turbo blower
deceleration)
E03 Overcurrent (during turbo blower
acceleration)
E04 Overcurrent (others)
Turbo blower rotor locked
Motor short-circuited or
ground-fault
Abrupt acceleration or
abrupt deceleration
E05 Inverter overload (overload operation)
E06 Damping resistor overload protection Invalid inverter setting
Turbo blower faulty
E07 Overvoltage protection
E08 EEPROM error
(NOTE)
Inverter faulty
E09 Insufficient voltage (voltage drop) Supply voltage drop
E10 CT error
E11 CPU error
E12 External trip
E13 USP error
Inverter faulty
E14 Ground protection Turbo blower or wiring
ground-fault
E15 Overvoltage protection in receiving Increased supply voltage