-- 24 --
1sxx02cw
CB0:5.1 Calibrating the current sensor signal
1 Connect the power source to a resistive load.
2 Connect a calibrated shunt in series with the load.
3 Set the power source to MMA mode.
4 Set a welding current of 100 A.
5 Load the power source so that the voltage across the load is 24 V.
6 Measure the shunt voltage using a calibrated multimeter.
7 Using potentiometer R21 on circuit board CB0, adjust the shunt voltage to
correspond to 100 A 1 A.
8 Check the current at low values as well: 16 A at 19 -- 22 V, for which the
tolerance is
±
1 A. If the current is outside the tolerance, replace current
sensor CS.
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