CTR12000 Car-O-Liner
Group
AB
41644, EN - rev. 2, 2012-09
17
By changing the „
OPERATION MODE
“ from AUTOMATIC to MANU-
AL the automatic measuring system to collect the total material thickness is
switched off. Instead you can adjust the thickness of material you want to
weld manually by turning the “
Power
” potentiometer.
The CTR12000 is equipped with a quality control system (QS), which give a
statement about every single spot during the welding process. The in particu-
lar phases resulting parameter characteristics are evaluated by program seg-
ments and depending on this, engagements are created to lead to a safe quali-
ty result.
Following phases could appear individually:
Total isolation
, in such a case an isolation between the metal sheets which
should be welded and lack of a bypass (spot weld nearby or vise grip) could
cause that no welding current is generated at the caps. The machine stops the
process automatically and displays the signal spot error (red), error code 16.
Partwise isolation
, the welding current do not flow the direct way from the
electrode through the metal sheets, but a detour. Then a preheating is acti-
vated automatically which heat the metal sheets and through maceration or
evaporation, burns through the glue or varnish rest at the spot area. The term
of that phase the yellow light keeps lighting. If that will not succeed in a pre-
setted time the process will be aborted. The red light signals the error. In the
case of success the yellow light stops lighting and the green light appears.
During "pre pulse" segment the process is leaded by the virtual generator.
The goal is to reach the welding current, which is reached individual in a dif-
ferent time without any disturbance through evaporation with weld spatters.
Normal steel will suffice in some milliseconds, with high strength steel it
could last for up to 300ms. Please pay attention that with high strength steel,
at that phase, up to 50 percent of the inserted energy is transferred, so the
welding time will not extend. For the case that the presetted critical time ex-
