3.2.4 Operating modes
3.2.4.1 2-step function sequence
Step 1 - Press torch button
Gas pre-flow time 4 seconds.
Pilot arc is ignited.
On contact with work piece, the cutting arc is ignited and the compressed air
is increased to the required throughput rate.
If contact is not made with the work piece within four seconds, the equipment
switches itself off automatically (safety shutdown).
Step 2 - Release torch button
Cutting current is interrupted, cutting voltage is switched off.
Post-purge gas flow time (demand-oriented).
If the torch button is pressed once again during the post-purge gas flow time,
no gas pre-flow will occur. Functional sequence is immediately restarted
(quick start).
3.2.4.2 4-step function sequence
Step 1 - Press torch button
Gas pre-flow time 4 seconds.
Pilot arc is ignited.
On contact with work piece, the cutting arc is ignited and the compressed air
is increased to the required throughput rate.
If contact is not made with the work piece within four seconds, the
equipment switches itself off automatically (safety shutdown).
Step 2 - Release torch button
- Prior to ignition of the cutting arc
Equipment switches to the basic setting (safety shut-down).
- After ignition of the cutting arc
Cutting operation is resumed.
If the torch is withdrawn during cutting, the arc is extinguished. This has the
effect of interrupting the cutting current and the equipment shuts down. This
function corresponds to the fourth step.
Step 3 - Press torch button
Cutting operation is resumed.
Step 4 - Release torch button
Cutting current is interrupted, cutting voltage is switched off.
Post-purge gas flow time (demand-oriented).
If the torch button is pressed once again during the post-purge gas flow time,
no gas pre-flow will occur. Functional sequence is immediately restarted
(quick start).
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