CEA MATRIX 2200 AC/DC, Operator'S Manual

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16
3) Press and release the “PRG” PROGRAM key (T2) to call up
the program number selected.
4) You can now carry out PROGRAMMED welding.
Viewing the parameters set
1) Call up the program required (see the “Calling up saved pro-
grams” paragraph).
2) Press and release the WELDING PARAME-
TERS SELECTION Key (T10) to view the pa-
rameters set in sequence.
3) Hold the WELDING PARAMETERS SELEC-
TION Key (T10) down for more than 1 second
to go back to the program selected.
NOTE: If the parameters set are edited, you auto-
matically exit programming.
Activating the VRD device
To activate the VRD device, which must be done when the weld-
ing machine is switched off:
1) Use a suitable screwdriver to unscrew the 4 screws that fix
the MTA control panel to the welding machine.
2) Position JUMPER W1 on the DIGITAL INTERFACE BOARD
in the correct position, following the instructions given in Fig-
ure A.
3) Use a suitable screwdriver to tighten the 4 screws that fix the
MTA control panel to the welding machine.
4) Start the welding machine by pushing the switch on the rear
panel to position I .
FIG. A
2000HB06
When the MTA control panel switches on the VRD LED will come
on and will be GREEN, which means that the VRD function is on.
To “deactivate” the VRD device and therefore start to weld, follow
this simple procedure: First touch the workpiece with the elec-
trode, then detach it and ignite the arc within a MAX of 0,3 sec-
onds, otherwise if this time is exceeded the VRD device starts and
prevents welding.
During welding the VRD LED turns RED, which does not indicate
any malfunction on the welding machine, but that the VRD device
has been deactivated to allow welding.
T10
Auxiliary functions
“Energy saving”
This function manages correct functioning of the cooling fan and
cooling equipment that only run when strictly necessary, that is:
• FAN MOTOR - The fan is activated when:
- During welding or for a certain period of time after this is fin-
ished.
- When the thermostat intervenes or for a certain period of time
after it has just been reset.
• COOLING DEVICE - The cooling device is activated:
- For a few seconds when the machine switches on. This oper-
ation is used to make the cooling liquid circulate through the
plant at the correct pressure. Call the technical service de-
partment if, when the cooling system is switched off, the error
does not disappear from the DISPLAY (D).
- During welding or for a certain period of time after this is fin-
ished.
Factory default
WARNING: This operation results in complete resetting of all pa-
rameters to the factory settings.
To reset the settings, you must:
• When the welding machine is off, push and hold the WELDING
PROCESS SELECTION (T7) and WELDING MODE SELEC-
TION (T9) keys down together.
• Switch on the welding machine and hold down the keys until the
DISPLAY (D) reads 80.
• Release the two keys.
• The reset procedure has now been completed successfully.
I
2
HOT
START
ARC
FORCE
PULSE
CYCLE
T
b
f
T
p
I
1
I
p
I
b PULSE
SYN
FAST
SLOW
WAVE
VRD
CYCLE
Ø
PULSE
SYN
FAST
SLOW
WAVE
T9
T7
D
Error and protection conditions
I
2
HOT
START
ARC
FORCE
PULSE
CYCLE
T
b
f
T
p
I
1
I
p
I
b PULSE
SYN
FAST
SLOW
WAVE
VRD
CYCLE
Ø
PULSE
SYN
FAST
SLOW
WAVE
D
The equipment is protected against problems and if any arise the
DISPLAY shows fixed or flashing (error code) messages (depend-
ing on the type of error) that serve to inform the operator that a fault
has occurred in the equipment (see table 1).
The table provides a summary of all the error conditions that may
arise on the equipment and, if possible, what the operator must
do to attempt to resolve the problem.
Automatic reset error: once the alarm condition has been re-
solved the equipment starts working again and the operator can
weld again!