ESAB LKB 400W, Руководство по обслуживанию

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B) MOTOR TEST
When trigger switch is closed – only feed motor starts, gas valve and contactor remain disenergised.
C) 4-STROKE CONTROL
The welding process is controlled by trigger switch S1 (welding gun) – as shown below:
NOTE: On the LKC31 – for selected 2-S/4-S mode – active signals are high!
3.1.4 WIRE FEED SPEED
The wire feed speed setting range is 1,6 to 25 meter/minute, the upper speed may be adjusted by R6A,
minimum speed is adjusted by R15A.
V-REF voltage is reference signal for motor speed control circuit.
Note: By the potentiometer R6A and R15A – there is set the ratio Vmax : Vmin; fine adjusting of the motor
speed (depending on the motor characteristic) – is performed by the R22A (see – section 3.1.5).
As well the motor speed (especially the lower range) – is influenced by the setting of I x R
compensation(R45 – see section 3.1.5).