Panasonic YD-400AT, Руководство по эксплуатации, Страница: 15 / 20

10
11. Check points for abnormal operation
Table 11.1
A: Take anti-polarity connection with using basic electrode that connect holder to the
“+”end.
B: We suggest that select the welding current as below equation
：
Welding Current = (20+6D) ×D [the D in the equation means the diameter of electrode(mm).]
* Notice: When other errors occur except these above points, contact sales distributor or dealer.
No. Abnormity Cause of warning Countermeasures
1
Power lamp doesn’t light
and no output after the
power switch on.
* The shortage of U or V phase in the
power supply
* Check out the cause of
the short voltage-phase.
2
Warning lamp of
temperature lights flicker
onece every one second
* Use over the rated duty.
* Use according to the rated
duty.
Warning lamp of voltage
lights ever bright * The input voltage is over high (over
498V ) or over low (less 332V) ; * adjust the input voltage to
the normal
Warning lamp of voltage
lights flicker twice quickly
every one second .
* losing of certain phase
* Check out the cause of
the losing of certain
phase .
Weld machine has neither
display nor output. * when the other tow phases are lost
separately or together. * Check out the cause of
the losing of phases .
3
Arc instability or unwell
welding
* Wrong connection of polarity
* Infirm connection of input ends or
output ends
* Welding current does not match the
electrode
* Set arc force current or start current out
of place
* Output cable switch out of place or
incorrect connection of output cable
(holder) * A
* Check and keep
connection firmly
* B
* Set arc force current or
start current suitable
* Check the switch and
connection of output cable,
make sure that both them
match the electrode