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ESAB MIG400iCCCV Instruction Manual page 9

Inverter mig/mma welding power source

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MIG MODE
Put MMA/ MIG switch on power source in MIG mode.
Crater Control (2T/4T)
Usually there is a crater at the end of welding. Adjust Crater Voltage and Current to fill
up the crater by arc ending current (less than 40%-70% of welding current) and
improve the welding quality. It also selects 2T/4T operation of the machine.
Soft wire feeding
In order to get the satisfying welding quality, the machine feed the wire at preset low
speed before wire touch the work piece. The speed will reach the normal level after
striking arc. It means striking arc fail if the current is not detected during this stage.
This kind of striking arc mode can improve the success of striking arc and ensure the
reliable and stable arc.
Burn back time
When the trigger of torch is switched off, the wire feeding will continue because of
inertia. So the wire will go out to the top end of torch after the welding. It will cause the
stick of wire to the work piece, thus bring the difficulty to the next welding. The burn
back is set in the machine to solve this problem. The machine will keep output voltage
during certain time to keep wire burning.
Current Inductance control
It means electronic reactor. It can adjust wire burning power by changing the current
changing speed, and reduce the spatter.
Ball cutting
Usually there is a big droplet at the end of wire after welding. And slag will stick on the
low surface of the droplet. It will cause difficulty of striking arc. The ball cutting circuit is
designed to cut the droplet automatically after welding.
Post-gas
3 seconds post-gas time is set to protect the welding area after welding.
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