Arc Ignition; Hf Ignition; Tig Automatic Cut-Out; Welding Programs - EWM Tetrix 352 AC/DC RC Operating Instructions Manual

5.12

Arc ignition

5.12.1 HF ignition

The arc is started without contact from high-voltage ignition pulses.
a) Position the welding torch in welding position over the workpiece (distance between the electrode tip
and workpiece should be approx. 2-3 mm).
b) Robot start signal (high voltage ignition pulses ignite the arc).
c) Ignition current flows. The welding process is continued according to the operating mode selected.
End the welding process: Robot stop signal or other signals depending on the operating mode
selected.

5.12.2 TIG automatic cut-out

If the arc does not ignite after starting or if the arc is interrupted when the torch is
moved away, an automatic cut-out occurs after 5 sec.
• The HF, gas and open circuit voltage (power unit) are switched off.
• If RINTX1x or BUSINTX1x are in use the automatic cut-out is regulated by the settings
made with the software PC300.net.
5.13

Welding programs

The welding machine has 16 programs, which can be accessed during the welding process, e.g. using an
up/down torch.
In each selected welding task (JOB), see the "Selecting the welding task" chapter, 16 programs can be
set, saved and accessed. In program "0" (default setting), the welding current can be set infinitely across
the whole range. In programs 1–15, 15 different welding currents can be defined.
Operating mode and pulse function can also be defined for programs 1–15, if the connected RINT X12 or
BUSINT X11 interface is in JOB mode. If the interfaces are not in JOB mode, operating mode and pulse
function are predefined by the interfaces.
Example:
Program number
1
2
The operating mode cannot be changed during the welding process. If the process is started with
program 1 (non-latched operating mode), program 2, despite being set to latched operating mode, will
apply the setting of start program 1 until the end of the welding process.
Pulse function (pulses off, pulses on) and welding currents will be applied from the relevant programs.
Changes made to the other welding parameters during the course of the program have
the equivalent effect on all programs.
Any change to the welding parameters is saved immediately in the JOB!
099-000139-EW501
01.08.2011
Figure 5-7
NOTE
Welding current
80 A
70 A
NOTE
Design and function
Operating mode
Non-latched
Latched
Arc ignition
Pulse function
Pulses on
Pulses off
29