Daihen OTC XD350, Руководство по обслуживанию

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CPXD-350,500 SERVICE MANUAL
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3. Troubleshooting
3.1 WARNING lamp
When an error occurs, warning lamps on the front panel LED turns on or flashes, then the welding
power source automatically stops. In this case, check the errors distinction by LED is possible.
●：
OFF,
○：
Light,
◎：
Flash,
△：
Flash two times
Error
No.
Error
Front panel
LED
LED 1
(red light)
LED 2
(green light)
①
Power supply frequency
○ ○ ○
②
Temperature
○ ○ ●
③
Input overvoltage
○ ● ○
④
Shortage of input voltage
○ ● ●
⑤
CO
2
/MAG welding mode switch error
◎ ○ ○
⑥
Error before starting welding
◎ ● ●
⑦
Gas check
◎ ● ○
⑧
Output overcurrent
○ ● ○
⑨
Microcomputer
△ ○ ●
⑩
Output voltage
△ ● ○
⑪
Current detection
△ ● ●
①
Power supply frequency
When the POWER CONTROL switch on the front panel is turn on at unstable power supply
frequency, the warning lamp comes on and the welding power source continues to stop operation. In
this case, turn off the power switch and turn on again to cancel the error.
②
Temperature error
When the duty cycle exceeds the rated duty cycle or the temperature exceeds 40˚C, the WARNING
lamp flashes and the welding power source stops automatically. In this case, wait until the fan stops,
with the CONTROL POWER switch turned on. When starting the welding operation again, use the
welding machine lower the duty cycle or the welding current.
③ Input over voltage error
When input voltage goes beyond 460V, the WARNING lamp lights up and the welding power source
stops automatically. Disconnect the CONTORL POWER switch and measure the input voltage with
such a measuring instrument as a tester to check to make sure if excessively high voltage is not
output. To eliminate the error, turn on the CONTORL POWER switch again after removing a cause of
the error above.
④
Shortage of input voltage error
When input voltage falls below 320V, the warning lamp lights, then the welding power source
automatically stop operation. In this case disconnect the switch and confirm there is no failure, then
turn on the switch again.
⑤
CO
2
/MAG welding mode switch error
When unavailable mode numbers are set while pressing the CO
2
/MAG welding mode switch on the
front panel, the WARNING lamp flashes and the welding power source keep stopping.
In this case, setting back to the normal setting is removing abnormal.