No.P10224
P. 28 / 47
11. APPLIED FUNCTION (continued)
(8)Automatic correction of the voltage detecting circuit
This welding power source precisely detects the welding voltage so that the machine can take the
high-level control of the waveform. But if any error occurs in the detected welding voltage, the
output voltage will become higher or lower. In the worst case, the arc may be unstable because
the power source can’t take a correct control of the waveform. Although the voltage detecting
circuit is exactly factory-set, the change of temperature for a long period, the replacement of
printed circuit board may cause an error in the detected voltage. This welding power source can
correct the error automatically. This function is factory-set to ON.
Note: the automatic correction is used for the automatic detection of the errors in the
welding voltage detecting circuit. It is not for correction of the voltage fluctuation caused by
the external factors such as the quality of base material, extension cable.
The correction
function detects an error from the time of the input of the welding start signal to the time of
output of welding voltage, and corrects the detecting circuit by using the detected values.
Therefore, when the external voltage for a function such as touch sensor of automatic
machine and robot system is applied to the output terminals of the welding power source at
the welding start signal input, normally the function doesn’t work. In this case, setting the
correcting function to OFF again is needed.
When resetting the function, ask your dealer.
Contact an automatic machine company or a robot manufacturer to check if the voltage is
externally applied to the output terminals of the welding power source.
