Electromagnetic Compatibility (Emc) - Lincoln Electric INVERTEC V205-T AC/DC Operator's Manual

(1) (2)
TORCH
BUTTON
OUTPUT
CURRENT
PRE-FLOW
GAS
1. Press and hold the TIG torch trigger to start the
sequence. The machine will open the gas valve to
start the flow of the shielding gas. After the preflow
time, to purge air from the torch hose, the output of
the machine is turned ON. At this time the arc is
started according to the selected welding mode (Lift
TIG or HF TIG). The default setting is HF starting
and can be changed to Lift TIG in the set-up menu.
After the arc is started the output current will be at
the Start/Crater current. This condition can be
maintained as long or as short as necessary (search
arc facility).
If the Start/Crater current is not necessary, do not
hold the TIG torch trigger as described at the
beginning of this step. Instead, quickly press and
release it. In this condition, the machine will
automatically pass from Step 1 to Step 2 when the
arc is started.
2. Releasing the TIG torch trigger starts the upslope
function. The time is dependant on the upslope
time you have selected using the Parameter
Selector switch. The output current will be
increased to the set welding current.
3. Press and hold the TIG torch trigger when the main
part of the weld is complete. The machine will now
decrease the output current at a controlled rate, or
downslope time, until the Start/Crater current is
reached. The Downslope time is dependant on the
time that has been set using Parameter Selection
switch. This finish/Crater current can be maintained
as long or as short as necessary.
This sequence has an automatic restart so welding

Electromagnetic Compatibility (EMC)

This machine has been designed in accordance with all relative directives and norms. However, it may still generate
electromagnetic disturbances that can affect other systems like telecommunications (telephone, radio, and television) or
other safety systems. These disturbances can cause safety problems in the affected systems. Read and understand
this section to eliminate or reduce the amount of electromagnetic disturbance generated by this machine.
This machine has been designed to operate in an industrial area. To operate in a domestic area it is
necessary to observe particular precautions to eliminate possible electromagnetic disturbances. The
operator must install and operate this equipment as described in this manual. If any electromagnetic
disturbances are detected the operator must put in place corrective actions to eliminate these disturbances
with, if necessary, assistance from Lincoln Electric.
Before installing the machine, the operator must check the work area for any devices that may malfunction because of
electromagnetic disturbances. Consider the following.
•
Input and output cables, control cables, and telephone cables that are in or adjacent to the work area and the
machine.
•
Radio and/or television transmitters and receivers. Computers or computer controlled equipment.
•
Safety and control equipment for industrial processes. Equipment for calibration and measurement.
•
Personal medical devices like pacemakers and hearing aids.
(3) (4) (3A)
--- GAS ON ---
will continue after this step. If the weld is completely
finished, use the following sequence instead of step
3 described above.
3A.
trigger. The machine will now decrease the
output current at a controlled rate, or downslope
time, until the Start/Crater current is reached
and the output of the machine is turned OFF.
POST-FLOW
After the arc is turned OFF the postflow time
will start.
4. Release the TIG torch trigger. The output current
will again increase to the welding current, like in
step 2, to continue welding. When the main part of
the weld is complete go to step 3.
As shown here, after the
TIG torch trigger is quickly
pressed and released from
step 3A, it is possible to
press and hold the TIG
torch trigger another time to
end the downslope time
and maintain the output
current at the Start/Crater
current. When the TIG
torch trigger is released the
output will again increase
to the welding current, like in step 4, to continue welding.
When the main part of the weld is complete go to step 3.
As shown here, again after
the TIG torch trigger is
quickly pressed and
released from step 3A, it is
possible to quickly press
and release the TIG torch
trigger a second time to
end the downslope time
and stop welding.
The default setting is
restart enabled. Restart
disabled can be selected in
the set-up menu.
8
Quickly press and release the TIG torch
TORCH
BUTTON
OUTPUT
CURRENT
GAS
TORCH
BUTTON
OUTPUT
CURRENT
GAS
(3A) (4)
--- GAS ON ---
(3A)
POST-FLOW
--- GAS ON ---
02/02