ESAB LKB 400W, Руководство по обслуживанию

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Voltage indication is adjusted by potentiometer R1 on the PCB – comparing with reference voltmeter at the
input.
(
Note: voltage adjusting is to be made only when jumpers are properly located and U-REF setting is
completed!)
Recommended voltage metering range is: 0V to –40V. (Calibration is performed for –25V).
Recommended current input range is: 0mV to +60mV. (Calibration for 60mV)
( Note: the above described procedure is applied only - when re-calibration of the factory setting is
necessary!)
V/A meter has “HOLD” function – i.e. after stop of welding, there is memorised the last displayed value
(current or voltage – depending on S1 position).
There is also possibility to compensate the voltage drop on current wires – i.e. to get indication of the actual
welding arc voltage.
Compensation is adjusted by potentiometer R28 (on the bottom side of PCB); when utmost CCW position –
there is no compensation, turning CW increases the compensation step.
NOTE: Factory setting is “no compensation”; if necessary – use reference voltmeter and artificial load – so
as to adjust compensation depending on the wire length.