Cebora INVERTER TIG Manual De Instrucciones página 16

dEL is displayed, hold down button AQ for more than 3
seconds and the program abbreviation will start fl ashing
4 SERVICE FUNCTIONS MENU
To enter this submenu press the button and, while holding
it down, press shortly button AQ
To exit repeat the procedure described above.
The service functions selection is obtained by holding
down shortly button AQ.
Changing the functions selected with button AQ is ob-
tained by means of knob AA.
Functions visible in TIG Process only.
4.1.COOLING UNIT MANAGEMENT
Display U shows abbreviation H20 and display O shows
abbreviation OFF (default).
Turn knob AA to select the type of operation:
- OFF = off.
- ON = always on
- On A = automatic start-up .
In automatic operation, at the machine start-up the cool-
ing unit goes on for 30 seconds and then shuts off.
When the torch trigger is pressed the cooling unit starts
operating and shuts off 3 minutes after the torch trigger
is released. If the coolant pressure is too low, the power
source delivers no current and display U will fl ash the
message H2O.
4.2 SP SPOT- AND STITCH WELDING
Is activated in two stages welding (led G)or 4 stages (led
H.) when the high frequency start-up is selected(led L).
Select abbreviation SP (spot) on display U by means of
button AQ, display O shows abbreviation OFF, by means
of knob AA set ON to activate the function.
Press shortly button AQ to select abbreviation tSP.
4.2.1 tSP ( Spot time)
Display U shows the abbreviation SP, display O shows
1 sec. time, by means of knob AA set the desired time
, range from 0.1 to 25 seconds.
If you want to set jog (welding with automatic interval)
press shortly button AQ and select abbreviation tin.
4.2.2 tin (interval time)
Display O will show abbreviation OFF.
Turn knob AA to select the interval time (range from 0,1
to 25 sec.).
4.3 PDU-(DUTY CYCLE PULSED active in pulsed mode
only).
This is the duration of the highest selected current in
pulsed mode.
It is expressed as a percentage of the time against the
Fdp frequency (default 50%)
Range: minimum 10% maximum 90%.
16
4.4 SC (START-UP CURRENT).
Always active in all TIG processes.
Start current level where the welding process begins.
Especially used for AC starts-up with big electrodes and
slope up.
Sets the pedal minimum level - Art. 193
Default 25%.
Range: minimum 1% - maximum 100%
4.5- CRA (FINAL CRATER FILLER).
Select abbreviation CrA on display U by means of button
AQ, display O shows abbreviation OFF by means of knob
AA set ON to activate the function.
Press shortly button AQ to select abbreviation CrC.
4.5.1 CrC (Carter current)
This current is a percentage of the welding current and the
process fi nal current.
Default 50%
Range:
minimum 10%
maximum 100%
4.5.2 tCr (Carter current time)
Crater current time duration.
Default 0.5 sec.
Range:
minimum 0.0 sec.
maximum 30 sec.
Functions visible in MMA process only.
4.6 HS (PERCENTAGE OF HOT-START CURRENT)
It is an overvoltage used to improve start-up.
Default 50%
Range:
minimum 0%
maximum 100%
4.7T HS (DURATION OF HOT-START CURRENT)
Default 0.15 sec.
Range:
minimum 0 sec.
maximum 0.5 sec.
4.8 AF (PERCENTAGE OF ARC-FORCE CURRENT)
It is a current that allows the electrode transfer.
Default 30%
Range:
minimum 0%
maximum 100%