Chapter 3.5.1 1. Er The Ignitio On 200% Of Th He Rent 40% An Nd Itable Startin Ng - REHM INVERTIG.PRO 240 DC Betriebsanleitung

Functio onal desc c ription
3.5.2 Gas pre e-flow time
Setting of the gas pre-flow time
The ga as pre-flow ti me is the tim
welding g procedure, that the ine
this the e arc is ignite ed with an in
work pi iece from bu rning.
If the w welding proce ess is restart
time is s automatica ally set to
acceler rates re-ignit tion which, a
3.5.3 Ignition n energy I
Setting of the igniti on energy I
The ign nition energy y can be ste
when ig gniting with h high-frequen
Depend ding on the e selected v
control ler makes a a pre-select
selectio on can then be adapted
electrod de (type, dia ameter) and t
When w welding with h thin materi
energy should be s elected.
With A AC welding u units, when
ignition n" is performe ed which ma
3.5.4 Start cu urrent I
Setting of the starti ing current I
The sta arting curren nt is the we
process s. The settin ng is steple
selecte ed current I (but maxim
1
welding g current I1 100 A -> st
current t enables:

Low wer load for th he electrode

Sea arch arc when n 4-step weld

Wel ding with re duced curre
or h ot spots.

Rap pid applicatio on of heat wit
3.5.5 Current t upslope
Setting of the curre ent upslope
3.5.1. T The current upslope tim
linearly y to the pre-s selected curr
starts im mmediately a after the igni
starts w when the torc ch button 1 is
e
e [3] is carrie ed out as de
me, after the activation o
rt gas valve is open befo
nert gas coat t which prote
ted during th e gas post-fl
0 seconds by the pr
mong other t things, helps
z z
[4] is carrie ed out as de
z z
eplessly set to any valu
cy or lift arc.
value for th he ignition e
ion for the required ign
d, by setting g the ignition
the welding t ask in accord
als and sma all electrode
the set igni tion energy
akes igniting e easier in mo
s
[5] is carrie ed out as de
s
lding curren t that is set
essly adjusta able between
um Imax., fo or example,
arting curren nt 40A). Se
due to the in ncreasing cu
ding helps a pproach the
nt at the sta art of a seam
th values of o over 100%
time t
u
time tu [6] is s carried out
me is the tim me in which
rent I . When n 2-step weld
1
ition of the a rc. When 4-s
s released w while the start
escribed in C Chapter 3.5.1
of torch butto on 1 to start
ore the arc is s ignited. Afte
ects the elec ctrode and th
flow time, the e gas pre-flow
rocessor co ontroller. Th
s to save time e.
escribed in C Chapter 3.5.1
e between 1 10 and 100%
energy I , th he processo
z
nition proce ss. This pre
n energy, to the selecte
rdance with t he polarity.
diameters, a low ignitio
is as of 90 0%, a "Powe
ore tough env vironments
escribed in C Chapter 3.5.1
t initially afte er the ignitio
n 10% and 200% of th
starting curr rent 40% an
electing a su itable startin
urrent proces ss
seam start
m when work king on edge
t as describe ed in Chapte
the welding current rise
ding, the cur rrent rise tim
step welding , the rise tim
ting current i s flowing.
1.
a
er
he
GB
w
is
1.
%
or
e-
ed
on
er
1.
on
he
nd
ng
es
er
es
me
me
1 7